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| PARAMETER LIST | ||
| PARAMETER NAME | DEFINITION | PARAMETER KEY |
| 1,1,1,2-TETRACHLOROETHANE ABUNDANCE | A liquid that is slightly soluble in water, completely miscible with alcohol and ether, used as an organic solvent, metal cleaner, paint remover, and weed killer, aka - Acetylene Tetrachloride. | 5532 |
| 1,1,1-TRICHLOROETHANE ABUNDANCE | A nonflammable colorless liquid; insoluble in water and soluble in alcohol and ether, used as a solvent, aka -Methyl chloroform. | 5536 |
| 1,1,2,2-TETRACHLOROETHANE ABUNDANCE | A colorless dense liquid that is difficult to burn, used: as a industrial solvent, to separate other substances, and degrease metals. | 5533 |
| 1,1,2-TRICHLORO-1,2,2-TRIFLUOROETHANE ABUNDANCE | A colorless, volatile liquid; soluble in alcohol and ether, used as a dry cleaning solvent and a refrigerant, and in fire extinguishers, aka - 1,1,2-Trichloro-1,2,2-trifluromethane. | 5540 |
| 1,1,2-TRICHLOROETHANE ABUNDANCE | A colorless liquid that is difficult to burn, used in making other chemicals and adhesives, and as a solvent. | 5537 |
| 1,1-DICHLOROETHANE ABUNDANCE | 1. A colorless, oily, man-made liquid. Evaporates at room temperature, primarily used to produce 1,1,1-Trichloroethane. 2. 1,1-Dichloroethane in water will evaporate. Small amounts of 1,1-Dichloroethane released to soil can also evaporate into the air or move throught the soil to enter groundwater. | 5522 |
| 1,1-DICHLOROETHYLENE ABUNDANCE | A synthetic chemical used to make certain plastics and flame retardant fabrics. Cab be used as a breakdown product for other chemicals in the environment, aka - Vinylidene chloride. | 5523 |
| 1,1-DICHLOROPROPENE ABUNDANCE | The relative amount of 1,1-dochloropropene present in a rock or a fracture, commonly expressed as a relative volume, mass, or percent of occurrence. | 5721 |
| 1,2,3-TRICHLOROETHANE ABUNDANCE | Combustible, toxic, white crystals; insoluble in water slightly soluble in alcohol, soluble in etther, used as an organic intermediate. | 5535 |
| 1,2,3-TRICHLOROPROPANE ABUNDANCE | A toxic, combustible, colorless liquid; slightly soluble in water, soluble in alcohol, and ether. Used as a paint and varnish remover, solvent, and degreasing agent. | 5539 |
| 1,2,4-TRICHLOROBENZENE ABUNDANCE | The relative amount of 1,2,4-trichlorobenzene present in a rock or fracture, commonly expressed as a relative volume, mass, or percent of occurrence. | 5673 |
| 1,2,4-TRIMETHYLBENZENE ABUNDANCE | A colorless liquid, used in heat transfer fluids, as a dielectric fluid and in making chemicals, insecticides and fungicides. | 5541 |
| 1,2-DIBROMO-3-CHLOROPROPANE ABUNDANCE | The relative amount of 1,2-dibromo-3-chloropropane present in a rock or fracture, commonly expressed as a relative volume, mass, or percent of occurrence. | 5725 |
| 1,2-DICHLOROBENZENE ABUNDANCE | A colorless to pale yellow liquid, it is used in dry cleaning, as a degreasing agent, and as an insecticide. | 5547 |
| 1,2-DICHLOROETHANE ABUNDANCE | The relative amount of 1,2-dichloroethane present in a rock or fracture, commonly expressed as a relative volume, mass, or percent of occurrence. | 5685 |
| 1,2-DICHLOROETHANE-D4 ABUNDANCE | The relative amount of 1,2-dichloroethane-d4 present in a rock or fracture, commonly expressed as a relative volume, mass, or percent of occurrence. | 5726 |
| 1,2-DICHLOROPROPANE ABUNDANCE | A synthetic chemical, colorless liquid belonging to a class of chemicals called volatile organic compounds. It has a chloroform like odor and evaporates quickly at room temperature. | 5526 |
| 1,2-DIPHENYLHYDRAZINE ABUNDANCE | 1,2-Diphenylhydrazine is a white solid. It disolves only slightly in water and does not change into a gas unless it is heated to very high temperatures. It sticks to soil and can be carried into the air along with windblown dust. Once in water or exposed to air it is changed into other chemicals within minutes. These chemicals include the toxic chemicals Azobenzene and benzidine. | 5555 |
| 1,3,5-TRIMETHYLBENZENE ABUNDANCE | The relative amount of 1,3,5-trimethylbenzene present in a rock or fracture, commonly expressed as a relative volume, mass, or percent of occurrence. | 5661 |
| 1,3-DICHLOROBENZENE ABUNDANCE | A colorless liquid. Used as a fumigant and an insecticide. | 5548 |
| 1,3-DICHLOROPROPANE ABUNDANCE | A synthetic chemical, straw colored flammable liquid with a sharp, sweet irritating odor that is part of a fumigant used to kill soil nemattodes of various crops. | 5527 |
| 1,3-DICHLOROPROPENE ABUNDANCE | The relative amount of 1,3-dichloropropene present in a rock or fracture, commonly expressed as a relative volume, mass, or percent of occurrence. | 5652 |
| 1,4-BROMOFLUOROBENZENE ABUNDANCE | The relative amount of 1,4-bromofluorobenzene present in a rock of fracture, commonly expressed as a relative volume, mass, or percent of occurrence. | 5728 |
| 1,4-DICHLOROBENZENE ABUNDANCE | Commonly referred to as para-DCB or p-DCB, but there are approximately 20 additional terms used for this chemical. p-DCB is a colorless solid with a characteristic penetrating odor. | 5549 |
| PARAMETER LIST | ||
| PARAMETER NAME | DEFINITION | PARAMETER KEY |
| 2,2-DICHLOROPROPANE ABUNDANCE | The relative amount of 2,2-dochloropropane present in a rock or fracture, commonly expressed as a relative volume, mass, or percent of occurrence. | 5722 |
| 2,3,4,5-TETRAFLUOROBENZOIC ACID CONCENTRATION (TEFBA) | The relative amount of 2,3,4,5-tetrafluorobenzoic acid in a material, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume 2,3,4,5-tetrafluorobenzoic acid in a material. 3. The ratio of 2,3,4,5-tetrafluorobenzoic acid in a material. | 6909 |
| 2,3,4-TRIFLUOROBENZOIC ACID (TFBA) | 1. The relative amount of 2,3,4-trifluorobenzoic acid in a material, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of 2,3,4-trifluorobenzoic acid in a material. 3. The ratio of 2,3,4-trifluorobenzoic acid in a material. | 6907 |
| 2,4,5-T ABUNDANCE | 2,4,5-Trichlorophenoxyacetic acid; a toxic, light-tan solid; soluble in alcohol, insoluble in eater; used a defoilant, plant hormone, and herbicide. | 5562 |
| 2,4,5-TP ABUNDANCE | The relative amount of 2,4,5-TP present in a rock or fracture, commonly expressed as a relative volume, mass, or percent of occurrence. | 5680 |
| 2,4,5-TRIFLUOROBENZOIC ACID ABUNDANCE | 1. The relative amount of 2,4,5-Trifluorobenzoic Acid in a material, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of 2,4,5-Trifluorobenzoic Acid in a material. 3. The ratio of 2,4,5-Trifluorobenzoic Acid in a material. | 6721 |
| 2,4,6-TRICHLOROPHENOL ABUNDANCE | The relative amount of 2,4,6-trichlorophenol present in a rock or fracture, commonly expressed as a relative volume, mass, or percent of occurrence. | 5674 |
| 2,4-D ABUNDANCE | 1. The relative amount of 2,4-d in a material, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of 2,4-d in a material. 3. The ratio of 2,4-d in a material. | 1717 |
| 2,4-DICHLOROPHENOL ABUNDANCE | 1. The relative amount of 2,4-dichlorophenol in a material, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of 2,4-dichlorophenol in a material. 3. The ratio of 2,4-dichlorophenol in a material. | 1718 |
| 2,4-DIFLUOROBENZOIC ACID CONCENTRATION (2,4-DFBA) | The relative amount of 2,4-difluorobenzoic acid (C7H4F2O2) present in a material, commonly expressed as a relative volume, mass, or percent of occurrence. | 6929 |
| 2,4-DIMETHYLPHENOL ABUNDANCE | 1. The relative amount of 2,4-dimethylphenol in a material, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of 2,4-dimethylphenol in a material. 3. The ratio of 2,4-dimethylphenol in a material. | 1719 |
| 2,4-DINITROPHENOL ABUNDANCE | 1. The relative amount of 2,4-dinitrophenol in a material, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of 2,4-dinitrophenol in a material. 3. The ratio of 2,4-dinitrophenol in a material. | 1720 |
| 2,4-DINITROTOLUENE ABUNDANCE | 1. The relative amount of 2,4-dinitrotoluene in a material, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of 2,4-dinitrotoluene in a material. 3. The ratio of 2,4-dinitrotoluene in a material. | 5553 |
| 2,4-DP ABUNDANCE | 1. The relative amount of 2,4-dp in a material, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of 2,4-dp in a material. 3. The ratio of 2,4-dp in a material. | 1721 |
| 2,6-DIFLUOROBENZOIC ACID ABUNDANCE | The relative amount of 2,6-difluorobenzoic acid present in a rock or fracture, commonly expressed as a relative volume, mass, or percent of occurrence. | 5611 |
| 2,6-DIFLUOROBENZOIC ACID CONCENTRATION (DFBA) | C7H4F2O2, concentration of mass per unit volume of 2,6-DFBA in a material. | 6879 |
| 2,6-DINITROTOLUENE ABUNDANCE | 1. The relative amount of 2,6-dinitrotoluene in a material, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of 2,6-dinitrotoluene in a material. 3. The ratio of 2,6-dinitrotoluene in a material. | 1722 |
| 2-CHLOROETHYLVINYLETHER ABUNDANCE | The relative amount of 2-chloroethylvinylether present in a rock or fracture, commonly expressed as a relative volume, mass, or percent of occurrence. | 5655 |
| 2-CHLORONAPHTHALENE ABUNDANCE | 1. The relative amount of 2-chloronaphthalene in a material, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of 2-chloronaphthalene in a material. 3. The ratio of 2-chloronaphthalene in a material. | 1723 |
| 2-CHLOROPHENOL ABUNDANCE | The relative amount of 2-chlorophenol present in a rock or fracture, commonly expressed as a relative volume, mass, or percent of occurrence. | 5667 |
| PARAMETER LIST | ||
| PARAMETER NAME | DEFINITION | PARAMETER KEY |
| 3,3-DICHLOROBENZIDINE ABUNDANCE | A gray to purple crystalline solid. Used as an intermediate in making dyes and pigments, and as a curing agent for urethane forms. | 5550 |
| 3,4-DIFLUOROBENZOIC ACID (DFBA) | The relative amount of 3,4-difluorobenzoic acid in a material, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume 3,4-difluorobenzoic acid in a material. 3. The ratio of 3,4-difluorobenzoic acid in a material. | 6908 |
| 3-(3,4-DIHYDROXYPHENYL)ALANINE (DOPA) ABUNDANCE | 1. The relative amount of DOPA in a material, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume DOPA in a material. 3. The ratio of DOPA in a material. | 6948 |
| 3-(3,4-DIHYDROXYPHENYL)ALANINE (DOPA) SORPTION | A general term for the various processes by which DOPA binds to another substance, especially the process of absorption (taking in the other substance completely) or adsorption (holding the other substance on the surface). | 6949 |
| 3-CARBAMOYL-2-(1H)-PYRIDINE ABUNDANCE | The radical NH(2)CO, formed from carbamic acid. Flammable yellowish liquid. | 5605 |
| 3-CARBAMOYL-2-(1H)-PYRIDONE | It is a solid, white chemical, which is "ignitable with difficulty". A derivative of Pyridine. | 6868 |
| 3D THERMO-HYDROLOGIC UZ MODEL | 5730 | |
| PARAMETER LIST | ||
| PARAMETER NAME | DEFINITION | PARAMETER KEY |
| 4,6-DINITROORTHOCRESOL ABUNDANCE | A yellow, crystalline odorless solid that may be used in solutions. Used to kill weeds and insects. | 5552 |
| 4-BROMOPHENYL PHENYL ETHER ABUNDANCE | 1. The relative amount of 4-bromophenyl phenyl ether in a material, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of 4-bromophenyl phenyl ether in a material. 3. The ratio of 4-bromophenyl phenyl ether in a material. | 1726 |
| 4-CHLOROPHENYL PHENYL ETHER ABUNDANCE | 1. The relative amount of 4-chlorophenyl phenyl ether in a material, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of 4-chlorophenyl phenyl ether in a material. 3. The ratio of 4-chlorophenyl phenyl ether in a material. | 1728 |
| PARAMETER LIST | ||
| PARAMETER NAME | DEFINITION | PARAMETER KEY |
| ABRASIVENESS | The fact of quality of being abrasive; being able to wear away another material. | 108 |
| ABSOLUTE GRAVITY | The value given to denote the density or specific gravity of substances at standard conditions; e.g., at standard atmospheric pressure and a temperature of 0 degrees Celsius for gases. | 5701 |
| ABSORPTION | The increase in mass of gravel/aggregate particles due to water penetration into the pores of the particles during a prescribed period of time, but not including water adhering to the outside surface of the particles, expressed as a percentage of the dry mass. | 7180 |
| ACENAPHTHENE ABUNDANCE | 1. The relative amount of acenaphthene in a material, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of acenaphthene in a material. 3. The ratio of acenaphthene in a material. | 1730 |
| ACENAPHTHYLENE ABUNDANCE | 1. The relative amount of acenaphthylene in a material, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of acenaphthylene in a material. 3. The ratio of acenaphthylene in a material. | 1731 |
| ACETATE ABUNDANCE | 1. The relative amount of acetate in a material, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of acetate in a material. 3. The ratio of acetate in a material. | 6699 |
| ACETATE MINERALIZATION | A fatty acid expressed as volume, mass or percentage. | 6445 |
| ACID NORMAILTY | Moles of positive charge equivalence per liter. | 7091 |
| ACROLEIN ABUNDANCE | 1. The relative amount of acrolein in a material, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of acrolein in a material. 3. The ratio of acrolein in a material. | 1732 |
| ACRYLONITRILE ABUNDANCE | 1. The relative amount of acrylonitrile in a material, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of acrylonitrile in a material. 3. The ratio of acrylonitrile in a material. | 1733 |
| ACTINIDE ABUNDANCE | 1. The relative amount of actinide in a material, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of actinide in a material. 3. The ratio of actinide in a material. | 6310 |
| ACTINIDE CHEMICAL PROPERTIES | Chemical behavior and properties of Actinide elements. | 6624 |
| ACTINIDE SORPTION DISTRIBUTION COEFFICIENT | The ratio for the various processes by which Actinides bind and distributes itself between other substances. | 6986 |
| ACTINIUM SORPTION DISTRIBUTION COEFFICIENT | The ratio for the various processes by which Actinium binds and distributes itself between other substances. | 6577 |
| ACTIVE FRACTURE PARAMETER | A fitting parameter that is inversely related to the number of hydraulically active fractures in a connected fracture system. See "gamma" in Liu et al, October 1998, Water Resources Research vol. 34 no. 10, pp. 2633-2646 | 7244 |
| ACTIVE FRACTURE PORTION | (ratio) effective water saturation in connected fractures over effective water saturation in hydraulically active fractures. See "f a" in Liu et al, October 1998, Water Resources Research vol. 34 no. 10, pp. 2633-2646. | 7245 |
| AEROMAGNETIC FIELD | The value/intensity of the earth's magnetic field as studied/measured from a point above the ground (airborne measurements). | 6185 |
| AGRICULTURAL AREAS | The areas used for agricultural purposes within a 50-mile radius of the repository site. | 811 |
| AGRICULTURAL STATISTICS | Summary of agricultural production and practices. | 6928 |
| AIR DISSOLUTION RATE | This property, which is set to zero for commercial fuel, is considered appropriate for DOE SNF. | 6633 |
| AIR FLOW RATE FOR EVAPORATIVE COOLERS | The volume of air moved by an evaporative cooler per unit run time. | 7226 |
| AIR FLOW VOLUME | The volume of air flowing past a unit area, generally expressed in a unit time. | 816 |
| AIR QUALITY | An essential or distinctive characteristic or property of an air flow. | 803 |
| AIR VENTILATION RATE | The forced air rate at which the removal of thermal energy is accomplished by transforming/exchanging with the airflow, (m3/s). | 7004 |
| AISI 1020 CARBON STEEL COMPOSITION | The makeup of AISI 1020 Carbon Steel. | 5622 |
| ALACHLOR ABUNDANCE | The relative amount of alachlor present in a rock or fracture, commonly expressed as a relative volume, mass, or percent of occurrence. | 5777 |
| ALBITE ABUNDANCE | The relative amount of albite present in a rock or fracture, commonly expressed as relative volume, mass, or percent of occurrence. | 4092 |
| ALDRIN ABUNDANCE | 1. The relative amount of aldrin in a material, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of aldrin in a material. 3. The ratio of aldrin in a material. | 1735 |
| ALKALI-SILICA REACTIVITY | The potential of an aggregate intended for use in concrete for undergoing alkali-silica reaction resulting in potentially deleterious expansion. | 6643 |
| ALKALINITY | The property of having excess hydroxide ions in solution. | 1592 |
| ALLANITE ABUNDANCE | The relative amount of allanite present in a rock or fracture, commonly expressed as a relative volume, mass, or percent of occurrence. | 6212 |
| ALLOY 22 | Alloy C22 or Alloy C-22 or Hastelloy C-22 is a versitile nickel-chromium-molybdenum-tungsten. | 6605 |
| ALLOY 316L | Alloy 316L is a low carbon chromium, chromium-nickel, and chromium-manganese-nickel stainless and heat resisting steel. | 6601 |
| ALLOY 316LG | Alloy 316LG stainless steel with carbon content of 0.2% by weight chromium, chromium-nickel, and chromium manganese-nickel stainless and heat resisting steel. | 6603 |
| ALLOY 316LN | Alloy 316LN is low carbon alloy with high nitrogen content 0.10% and 0.16% by weight chromium, chromium-nickel, and chromium manganese-nickel stainless and heat resisting steel. | 6602 |
| ALLOY 625 | Incoloy alloy 625 is a nickel-chromium matrix alloy with the addition of molybdenum and columbium. | 6599 |
| ALLOY 825 | Incoloy alloy 825 is a nickel-iron-chromium alloy with the addition of molybdenum, copper, and titanium. | 6598 |
| ALLOY 825 COMPOSITION | 5621 | |
| ALLOY CARBON STEEL | Carbon steel alloy or AISI 1020 carbon steel alloy is a carbon-manganese-iron alloy with silica, phosphate, and sulfate. | 6600 |
| ALLOY CHEMICAL COMPOSITION | The percent by weight of the elements (including fillers and residuals) in an alloy. | 6775 |
| ALLUVIAL FAN MORPHOMETRY | The geometric characteristics of alluvial fans, which are deposits of detrital material deposited in a fan shape below steep slopes or at other decreases in gradients. | 1072 |
| ALLUVIUM THICKNESS | The thickness of a detrital deposit made in recent time by a stream on a river bed, flood plain, or alluvial fan. Alluvium does not include subaqueous sediments of seas and lakes. | 1403 |
| ALPHA RADIOACTIVITY WATER DISSOLVED INTENSITY | Alpha radioactivity in water due to dissolved radionuclides that decay by alpha emission, such as thorium-230, uranium-235, uranium-238, neptunium-237 and plutonium-239. For this purpose the concentrations of these isotopes of radioactive elements are expressed as picocuries per liter. Unit of measure pCi/L. | 5563 |
| ALPHA TITANIUM ALLOY | A material that is non-heat treatable and generally very weldable; has low to medium strength, good notch toughness, reasonably good ductibilty and possesses excellent mechanical properties at cryogenic temperatures. The more highly alloyed, the more it offers in optimum high temperature creep strength and oxidation resistance as well. | 7237 |
| ALTITUDE CHANGE | The change in surface altitude due to an event or site characteristic. | 1352 |
| ALUMINUM ABUNDANCE | 1. The relative amount of aluminum in a material, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of aluminum in a material. 3. The ratio of aluminum in a material. | 1604 |
| ALUMINUM OXIDE ABUNDANCE | The relative amount of aluminum oxide present in a rock or fracture, commonly expressed as a relative volume, mass, or percent of occurrence. A compound also called alumina, commercially used for aluminum production. | 5628 |
| ALUMINUM-27 ISOTOPIC ABUNDANCE | The relative amount of isotopic Aluminum-27 in a material commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of isotopic Aluminum-27 in a material. 3. The ratio of isotopic Aluminum-27 in a material. | 7098 |
| AMERICIUM ABUNDANCE | 1. The relative amount of Americium in a material, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of Americium in a material. 3. The ratio of Americium in a material. | 6312 |
| AMERICIUM CONCENTRATION | Americium concentration--expressed as C/Co, is the measured effluent concentration of Americium divided by the initial tracer concentration. For Steady State concentrations, Steady State is the condition where measurable changes in concentrations are not occurring over practical experimental times. | 6658 |
| AMERICIUM DESORPTION | The amount of americium detached from a material after sorption, expressed as a percentage or volume. | 7010 |
| AMERICIUM DESORPTION DISTRIBUTION COEFFICIENT | The measured Kd (mL/g) of americium on a material after desorption. | 7011 |
| AMERICIUM KC PARAMETER | The product of the distribution coefficient for Americium on colloids and the concentration of the colloidal material available for sorption (mass of colloids per unit fluid volume). | 6994 |
| AMERICIUM OXIDE ABUNDANCE | 1. The relative amount of Americium Oxide in a material commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of Americium Oxide in a material. 3. The ratio of Americium Oxide in a material. | 6375 |
| AMERICIUM RELEASE | 1. The relative amount of americium released into a medium, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of americium released into a medium. A crystalline silver-white transuranic element of the actinide series, produced by neutron bombardment of plutonium, an atomic weight of 243 in its most stable isotope, and a half-life of 475 years. | 5645 |
| AMERICIUM SORPTION COEFFICIENT ONTO COLLOIDS | Sorption coefficient onto reversible colloids for Americium sorption. | 7284 |
| AMERICIUM SORPTION DISTRIBUTION COEFFICIENT | The ratio for the various processes by which Americium binds and distributes itself between other substances. | 6578 |
| AMERICIUM-241 ISOTOPIC ABUNDANCE | 1. The relative amount of isotopic americium-241 in a material, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of isotopic americium-241 in a material. 3. The ration of isotopic americium-241 in a material. | 6237 |
| AMERICIUM-243 ISOTOPIC ABUNDANCE | The relative amount of isotopic americium-243 in a material commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of isotopic americium-243 in a material. 3. The ratio of isotopic americium-243 in a material. | 6521 |
| AMETRYNE ABUNDANCE | The relative amount of ametryne present in a rock or fracture, commonly expressed as a relative volume, mass, or percent of occurrence. | 5776 |
| AMINE GROUP ABUNDANCE | 1. The relative amount of Amine Group in a material, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of Amine Group in a material. 3. The ratio of Amine Group in a material. | 6364 |
| AMMONIUM ABUNDANCE | 1. The relative amount of Ammonium in a material, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of Ammonium in a material. 3. The ratio of Ammonium in a material. | 6304 |
| AMORPHOUS SILICA ABUNDANCE | Noncrystalline reprecipitated silica abundance, commonly expressed as a relative volume, mass, or percent of occurence. | 7344 |
| AMORPHOUS SOLID | A naturally occurring solid lacking any internal atomic order. Includes glass and gel minerals, often exhibits a wide variation in chemical composition. Commonly expressed as relative volume, concentration or ratio. | 6904 |
| AMPHIBOLE GROUP ABUNDANCE | The relative amount of amphibole present in a rock or fracture, commonly expressed as relative volume, mass, or percent of occurrence. | 4121 |
| ANALCIME ABUNDANCE | The relative amount of analcime present in a rock or fracture, commonly expressed as a relative volume, mass, or percent of occurrence. The chemical composition of the mineral Analcime, quantified as weight percentages of oxides, molecular proportions, and/or end member proportions. | 6301 |
| ANGLE OF INTERNAL FRICTION | The angle forming the slope of the Mohr-Coulomb failure criterion for intact rock. | 1136 |
| ANGLE OF REPOSE | The angle the sides of a pile of granular material make with the horizontal plane. | 6982 |
| ANIMAL ABUNDANCE | The estimated population size base on the actual number of captures (if less than an established minimum value per sampling session) or the number calculated by means of (specifically designed) software plus the number of dead animals (if not used in the calculation). | 6733 |
| ANIMAL AMOUNTS RAISED | The amounts of animals raised for human consumption in a specified area. | 759 |
| ANIMAL CAPTURES | The number of animals captured during a sampling period. | 668 |
| ANIMAL CHARACTERISTICS | Summary-level characteristics of animal species. | 1019 |
| ANIMAL DENSITY | The number of living animals of a given species per unit area of habitat. | 1235 |
| ANIMAL DISEASE | Illness caused by viral or bacterial infection in animals. | 6676 |
| ANIMAL FATE | The status of an animal at the end of a study. | 6751 |
| ANIMAL FEED CONSUMPTION RATES | Daily animal feed consumption rate at which various livestock consume feed product. It is dependent on livestock and product type. Various types include: Stored feed for beef, Stored feed for poultry, Stored feed for milk, Fresh forage for beef, Fresh forage for milk, Water for beef, Water for poultry, Water for milk, etc. | 6888 |
| ANIMAL FOOD HABITS | The species of vegetation or animals eaten by a specified type of animal. | 1022 |
| ANIMAL FORAGING RADIUS | The average distance, in all directions from a specified point, over which foraging animals will travel to feed on natural vegetation within a specified time. | 1397 |
| ANIMAL HIBERNATION ACTIVITY | The period and location of hibernation for a hibernating animal species. | 1240 |
| ANIMAL HOME RANGES | The geographic locations or areas used by a given animal species. | 1239 |
| ANIMAL MONITORING | The number of animals seen during surveys. | 1242 |
| ANIMAL REPRODUCTIVE EFFORT | The number of nests, eggs, or other reproductive signs of a given animal species in a monitoring area. | 1241 |
| ANIMAL SIGNS | The number of indications of animal presence in a specified area, including tortoise burrows, carcasses, scat, individuals, and other evidence of animal existence. | 1071 |
| ANIMAL SOIL CONSUMPTION RATE | The mass of soil consumed by animals per unit time (usually per day). | 7223 |
| ANIMAL SURVIVAL RATE | The estimated rate of survival of animals in a specified area. | 1237 |
| ANIMAL TYPES RAISED | The types of animals raised for consumption in a specified area. | 769 |
| ANIMAL VISITATION RATES | The number of times animals of a given species (e.g. kit fox) visit a monitoring station during a sampling session. | 1082 |
| ANIMAL WATER CONSUMPTION RATES | Daily animal water consumption rate at which various livestock consume water. It is dependent on livestock type. | 6889 |
| ANNEALED | Annealed is a process of heating and slow cooling of a material to reduce brittleness. | 6606 |
| ANNUAL PROBABILITY OF EXCEEDENCE FOR HORIZONTAL PGV | 6483 | |
| ANORTHITE ABUNDANCE | 1. The relative amount of Anorthite in a material, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of Anorthite in a material. 3. The ratio of Anorthite in a material. | 6372 |
| ANTHRACENE ABUNDANCE | 1. The relative amount of anthracene in a material, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of anthracene in a material. 3. The ratio of anthracene in a material. | 1742 |
| ANTIMONY ABUNDANCE | 1. The relative amount of antimony in a material, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of antimony in a material. 3. The ratio of antimony in a material. | 1606 |
| APATITE ABUNDANCE | The relative amount of apatite present in a rock or fracture, commonly expressed as a relative volume, mass, or percent of occurrence. | 6214 |
| AQUATIC FOOD CONSIDERATION | A GENII-S defined parameter for including the consumption of locally produced freshwater fish into analysis of the critical group in the reference biosphere. | 6939 |
| AQUEOUS SYSTEMS | An assemblage or group of systems composed of, formed out of, or related to water. | 6393 |
| AQUIFER COMPRESSIBILITY | The unit change in aquifer skeletal or matrix volume per unit change in effective stress (stress applied to the skeleton or matrix). | 393 |
| AQUIFER LOCATION | The geographic location and depth of an aquifer. | 536 |
| AQUIFER THICKNESS | The thickness of a body of rock that is sufficiently permeable to transmit ground water and to yield economically significant quantities of water to wells and springs. | 409 |
| AREA REDUCTION | Change in cross-sectional area of specimen at failure divided by the original cross-sectional area (expressed in %). | 7323 |
| AREAL POWER OUTPUT | The total thermal output divided by the area over which the waste is emplaced (repository footprint). | 6788 |
| ARGON ABUNDANCE | 1. The relative amount of argon in a material, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of argon in a material. 3. The ratio of argon in a material. A nonmetallic chemical element, one of the noble gasas, an atomic weight of 39.948; freezes at -189.2 degrees Celsius and boils at 185.9 degrees Celsius. A colorless, odorless, inert gas that forms 0.93% of the atmosphere and that is not known to form any chemical comounds. | 5762 |
| ARGON-40/ARGON-39 ISOTOPIC RATIO | The initial amount of Argon-40/Argon-39 in a material commonly expressed as weight per unit sample weight (e.g. parts per million) or as an abundance realtive to another isotope of the same element (atom ratio). | 6343 |
| ARRAY NEUTRON POROSITY | Porosity derived from the output of an array-type (multiple sensor) neutron logging tool. | 6925 |
| ARSENIC ABUNDANCE | 1. The relative amount of arsenic in a material, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of arsenic in a material. 3. The ratio of arsenic in a material. | 1608 |
| ASH ERUPTION VOLUME | The amount of volcanic ash (km3) erupted over the duration of a volcanic event. | 7303 |
| ASH PLUME MODEL VARIABLES | List of variables which includes the following: Grid Label; Grid Spacing; Minimum Eruption Column Height Modeled; Threshold Limit on Ash Accumulation; Run Type: deterministic or stochastic; Option to Save Particle Size Information; Random Variable Flag. | 7051 |
| ASH-PARTICLE DIAMETERS | An expression of ash (fine or very fine pyroclastic particles blown out from a volcanic explosion) particle size, equal to the length of a straight line through the center of a theoretically spherical sedimentary particle. | 6479 |
| ASH/PYROCLAST ASCENT VELOCITIES | The time rate of change in the vertical position vector of an individual particle of clastic rock material blown out from a volcanic explosion (usually measured as distance traveled per unit time). | 6475 |
| ASTRONOMICAL RISE/SET | The time when the upper edge of the disk of the astronomical body is on the horizon assuming average atmospheric conditions and level ground. | 6738 |
| ATMOSPHERIC PRESSURE | The force per unit area exerted by the atmosphere. | 559 |
| ATMOSPHERIC STABILITY INDEX | A measure of atmospheric stability as defined by the Pasquill-Gifford stability classification method. | 562 |
| ATOMIC FORCE MICROSCOPY (AFM) | (AFM) or scanning probe microscopy (SPM), uses a sharp probe moving over a surface in a raster scan to map surface forces. This techniques is often used to create topographic images of the surface morphology. | 6776 |
| ATRAZINE ABUNDANCE | The relative amount of atrazine present in a rock or fracture or material, commonly expressed as a volume, mass, or percent of occurence. A white crystalline solid that melts at 173 degrees Celsius; widely used as an herbicide. | 5770 |
| AURORITE ABUNDANCE | The relative amount of aurorite present in a rock or fracture, commonly expressed as a relative volume, mass, or percent of occurrence. | 6507 |
| AVERAGE SHEAR STRAIN | The average of shearing strain determined for a test series. | 6764 |
| AXIAL STRAIN AT FAILURE | The axial strain at failure of a sample of specimen. | 7190 |
| PARAMETER LIST | ||
| PARAMETER NAME | DEFINITION | PARAMETER KEY |
| B-VALUE | 5688 | |
| BACKFILL GEOMETRY | Backfill Height, Angle of Repose, and the Intersection with the Drift Wall. | 6791 |
| BACKGROUND RADIATION | The quantification of radiation in the environment. | 1003 |
| BACTERIA ABUNDANCE | The relative amount of bacteria present in a rock or fracture, commonly expressed as a relative volume, mass, or percent of occurrence. | 5754 |
| BACTERIAL BIOMASS | The dry weight of bacterial material. | 6652 |
| BACTERIAL TYPES | Groupings of extremely small, unicellular microorganisms that multiply by cell division and whose cell is typically contained within a cell wall, occurring in spherical, rod-like, spiral, or curving shapes and found in virtually all environments. | 5751 |
| BARIUM ABUNDANCE | 1. The relative amount of barium in a material, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of barium in a material. 3. The ratio of barium in a material. | 1610 |
| BARIUM OXIDE | 1. A binary compound of Barium and oxygen. 2. BaO, a white to yellow powder that melts at 1923 degrees Celsius, absorbs Carbon Dioxide readily from the air, and reacts with water to form the hydroxide; used as a dehydrating agent and as a detergent for lubricating oils. | 5815 |
| BARIUM OXIDE ABUNDANCE | The relative amount of barium oxide present in a rock or fracture or material, commonly expressed as a relative volume, mass, or percent of occurence. A white to yellow powder that melts at 1923 degrees Celsius, absorbs carbon dioxide readily from the air, and reacts with water to form hydroxide; used as a dehydration agent and as a detergent for lubricating oils. | 5706 |
| BARIUM SORPTION DISTRIBUTION COEFFICENT | The ratio for the various processes by which Barium binds and distributes itself between other substances. | 6158 |
| BARRIER | Anything that prevents passage or hinders. | 6448 |
| BASALTIC ASH/TEPHRA CONTENT | The proportion of volcanic ejecta of basaltic composition present in a geologic deposit, expressed in weight or volume percent or fraction. | 7282 |
| BASALTIC VOLCANIC CENTER LOCATION | Location of pliocene and quaternary basaltic volcanic centers. | 6996 |
| BASKET MATERIALS | 6178 | |
| BEARING CAPACITY | The compressive stress that can be imposed/applied by the supporting beam onto a foundation without failure to the foundation. | 415 |
| BEHAVIOR TIME | The average amount of time spent conducting an activity | 7243 |
| BEIDELLITE ABUNDANCE | A white, reddish, or brown-gray monoclinic clay mineral of the smectite group. | 6346 |
| BENZENE ABUNDANCE | 1. The relative amount of benzene in a material, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of benzene in a material. 3. The ratio of benzene in a material. | 1745 |
| BENZIDINE ABUNDANCE | 1. The relative amount of benzidine in a material, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of benzidine in a material. 3. The ratio of benzidine in a material. | 1746 |
| BENZO (B) FLUORANTHENE ABUNDANCE | One of the polycyclic aromatic hydrocarbon (PAH) compounds. This chemical combines with dust particles in the air and is carried into water and soil and onto crops. Benzo (a) anthracene is found in creosote, a chemical used to preserve wood. | 5544 |
| BENZO (G,H,I) PERY-LENE | 5818 | |
| BENZO - (A) PYRENE | Benzopyrene, C20H12, is a five-ring aromatic hydrocarbon occurring in the form of pale yellow crystals; melts at 176 - 179^oC and boils at 310 - 312^oC. It is highly carcinogenic and is found in coal tar, cigarette smoke, and as a product of incomplete combustion. It is a procarcinogen that requires metabolic activation to have a mutagenic effect. | 5819 |
| BENZO - (K) FLUOR-ANTHENE | 5820 | |
| BENZO(A)ANTHRACENE ABUNDANCE | The relative amount of benzo(a)anthracene present in a rock or fracture, commonly expressed as a relative volume, mass, or percent of occurrence. | 5796 |
| BENZO[A]PYRENE ABUNDANCE | The relative amount of benzo[a]pyrene present in a rock or fracture, commonly expressed as a relative volume, mass, or percent of occurrence. | 5664 |
| BENZO[G,H,I]PERYLENE ABUNDANCE | The relative amount of benzo[g,h,i]perylene present in a rock or fracture, commonly expressed as a relative volume, mass, or percent of occurrence. | 5663 |
| BENZO[K]FLUORANTHENE ABUNDANCE | The relative amount of benzo[k]fluoranthene present in a rock of fracture, commonly expressed as a relative volume, mass, or percent of occurrence. | 5662 |
| BERYLLIUM ABUNDANCE | 1. The relative amount of beryllium in a material, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of beryllium in a material. 3. The ratio of beryllium in a material. | 1612 |
| BERYLLIUM RELEASE | 1. The relative amount of beryllium released into a medium, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of beryllium released into a medium. | 6245 |
| BETA-CONSTANT CONTROLLING ASH DISPERSAL | Constant controlling diffusion of ash particles in an eruptive column. | 6856 |
| BICARBONATE | 1. A salt made by the neutralization of one Hydrogen atom in Carbonic Acid. 2. Any salt containing the -HCO3 group. | 5822 |
| BICARBONATE ABUNDANCE | 1. The relative amount of bicarbonate in a material, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of bicarbonate in a material. 3. The ratio of bicarbonate in a material. | 1751 |
| BINDING ENERGY | The energy required to either separate an electron from an atom or to separate the protons and neutrons of an atomic nucleus. | 7283 |
| BIOACCUMULATION FACTOR | Ratio of the radionuclide concentration in aquatic food (Bq/kg) to the radionuclide concentration in the water (Bq/L) at equilibrium conditions. Ratio used to calculate the transfer of a radionuclide from contaminated water through various trophic levels of aquatic food consumed by humans. | 6899 |
| BIOLOGICAL STUDY SITES | Name of study sites used to monitor biological resources during site characterization activities at Yucca Mountain, Nye County, Nevada. | 6647 |
| BIOSPHERE DOSE CONVERSION FACTOR | The all-pathway total effective dose equivalent (TEDE) from annual exposure incurred by the defined receptor for a unit activity concentration of a given radionuclide at the source of contamination. | 6973 |
| BIOSPHERE DOSE CONVERSION FACTOR ABSTRACTION | The values of the parameters defining the statistical distribution of the stochastic biosphere dose conversion factors for the radionuclides considered for TSPA. | 7007 |
| BIOSPHERE DOSE CONVERSION FACTOR FOR GROUNDWATER RELEASE EXP | The all-pathway total effective dose equivalent (TEDE) from annual exposure incurred by the defined human receptor when a unit activity concentration of a radionuclide in groundwater reaches the biosphere. | 7141 |
| BIOSPHERE DOSE CONVERSION FACTOR FOR VOLCANIC RELEASE EXPOSU | The all-pathway total effective dose equivalent (TEDE) from annual exposure incurred by the defined human receptor when a unit activity concentration of a radionuclide in volcanic ash gets deposited on the soil surface. | 7142 |
| BIOSPHERE DOSE CONVERSION FACTOR VARIANCE CONTRIBUTION | Percent or relative rank contribution of a pathway to the committed effective dose of radionuclide(s) to a human from the surrounding environmental biosphere. | 7005 |
| BIOSPHERE DOSE MODEL | A mathematical representation of the accumulation of ionizing radiation by that part of the earth's atmosphere, hydrosphere, and lithosphere in which living organisms are known to exist. | 6324 |
| BIOTITE ABUNDANCE | The relative amount of biotite present in a rock or fracture, commonly expressed as a relative volume, mass, or percent of occurrence. | 6165 |
| BIS (2-CHLOROETHOXY) METHANE ABUNDANCE | 1. The relative amount of bis (2-chloroethoxy) methane in a material, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of bis (2-chloroethoxy) methane in a material. 3. The ratio of bis (2-chloroethoxy) methane in a material. | 1752 |
| BIS (2-CHLOROETHYL) ETHER ABUNDANCE | 1. The relative amount of bis (2-chloroethyl) ether in a material, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of bis (2-chloroethyl) ether in a material. 3. The ratio of bis (2-chloroethyl) ether in a material. | 1753 |
| BIS (2-CHLOROISOPROPYL) ETHER ABUNDANCE | 1. The relative amount of bis (2-chloroisopropyl) ether in a material, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of bis (2-chloroisopropyl) ether in a material. 3. The ratio of bis (2-chloroisopropyl) ether in a material. | 1754 |
| BIS (2-ETHYLHEXYL) PHTHALATE ABUNDANCE | The relative amount of bis (2-ethylhexyl) phthalate present in a rock or fracture, commonly expressed as a relative volume, mass, or percent of occurrence. | 5797 |
| BISMUTH ABUNDANCE | 1. The relative amount of bismuth in a material, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of bismuth in a material. 3. The ratio of bismuth in a material. An element having a melting point of 271 degrees Celsius; a brittle metal with a reddish tinge. Not generally considered radioactive, it has four naturally radioactive isotopes. | 5609 |
| BOREHOLE ATTITUDE | The angle along the length of a borehole relative to the vertical at that location. | 911 |
| BOREHOLE CASING CONDITION | A description of the physical condition of a borehole casing, including any corrosional, erosional, or fracture features that could compromise borehole integrity. | 819 |
| BOREHOLE DEPTH | The depth of a borehole measured from its entry surface. | 924 |
| BOREHOLE DIAMETER | The measurement of a borehole gauged by a line segment that intersects two directly opposite points and the borehole's center. | 908 |
| BOREHOLE IDENTIFIER | Standard name used to identify a particular borehole. | 6995 |
| BOREHOLE LOCATIONS | The geographic locations of boreholes. | 597 |
| BOREHOLE RADIUS | The measurement of a borehole gauged from a point at the centerline, perpendicular to a point on its periphery. | 6789 |
| BOREHOLE-FAULT INTERCEPT AREA | The cross sectional area of a fault with drilled boreholes. | 1414 |
| BORON ABUNDANCE | 1. The relative amount of boron in a material, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of boron in a material. 3. The ratio of boron in a material. | 1614 |
| BORON OXIDE ABUNDANCE | 1. The relative amount of Boron Oxide in a material, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of Boron Oxide in a material. 3. The ratio of Boron Oxide in a material. | 6376 |
| BORON RELEASE | 1. The relative amount of boron released into a medium, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of boron released into a medium. A highly reactive nonmetallic chemical element with an atomic weight of 10.811, a specific gravity of 2.34 (amorphous) or 2.46 (crystalline), a melting point of 2300 degrees Celsius. Occurs as a brown amorphous powder or as black monoclinic crystals. | 5646 |
| BOUNDARY | Something that marks or fixes a limit. | 6440 |
| BRECCIA LOCATION | The geographic location of a geologic outcrop of breccia. | 6554 |
| BROMACIL ABUNDANCE | The relative amount of bromacil present in a rock or fracture, commonly expressed as a relative volume, mass, or percent of occurrence. | 5782 |
| BROMIDE ABUNDANCE | 1. The relative amount of bromide in a material, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of bromide in a material. 3. The ratio of bromide in a material. | 1756 |
| BROMIDE BREAKTHROUGH | Normalized Concentration of Bromide expressed as a function of distance (m). | 7090 |
| BROMIDE/CHLORIDE RATIO | The amount of Bromide/Chloride in a material commonly expressed as weight per unit sample weight (e.g., parts per million) or as an abundance relative to another isotope of a different element (atom ratio). | 6410 |
| BROMINE ABUNDANCE | 1. The relative amount of bromine in a material, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of bromine in a material. 3. The ratio of bromine in a material. | 1615 |
| BROMINE-81 ISOTOPE | The amount of bromine-81 in a material commonly expressed as weight per unit sample weight (e.g. parts per million) or as an abundance relative to another isotope of the same element (atom ratio). | 7159 |
| BROMINE/CHLORINE RATIO | The amount of Bromine/Chlorine in a material commonly expressed as weight per unit sample weight (e.g., parts per million) or as an abundance relative to another isotope of a different element (atom ratio). | 5690 |
| BROMOBENZENE ABUNDANCE | 1. The relative amount of bromobenzene in a material, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of bromobenzene in a material. 3. The ratio of bromobenzene in a material. | 1757 |
| BROMOCHLOROMETHANE ABUNDANCE | The relative amount of bromochloromethane present in a rock or fracture, commonly expressed as a relative volume, mass, or percent of occurrence. A colorless liquid with a sweet pleasant odor, used as a solvent and cleaning agent. | 5723 |
| BROMOFORM ABUNDANCE | 1. The relative amount of bromoform in a material, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of bromoform in a material. 3. The ratio of bromoform in a material. | 1758 |
| BROMOMETHANE ABUNDANCE | 1. The relative amount of bromomethane in a material, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of bromomethane in a material. 3. The ratio of bromomethane in a material. | 1759 |
| BUILDING SHIELDING FACTOR | A multiplier used to quantify the reduction of the outdoor external exposure to radiation by the buildings for the building occupants. | 7242 |
| BULK DENSITY | 1). The mass per unit volume of a material. 2). The total mass (solids, liquids, and gases) divided by the total volume, including pore space, of soil or rock. | 60 |
| BULK HYDROUS MINERAL CONTENT | The total amount of minerals (including any volcanic glass) present in a rock sample, which may be described as "hydrous" because they contain water bound to their chemical structure. | 6526 |
| BULK MODULUS | 1. (Mechanics) The ratio of the change in pressure applied on a body to the corresponding fractional change in volume that this pressure produces; usually denoted by the symbols B or K. A.K.A. = Modulus of Volume Elasticity, Hydrostatic Modulus, Compression Modulus. | 6316 |
| BUTACHLOR ABUNDANCE | The relative amount of butachlor present in a rock or fracture or material, commonly expressed as a volume, mass, or percent of occurrence. A light yellow oil; soluble in water and organic solvents; boils at 196 degrees celsius; used as a herbicide. | 5787 |
| BUTYLATE ABUNDANCE | The relative amount of butylate present in a rock or fracture, commonly expressed as a relative volume, mass, or percent of occurrence. | 5789 |
| PARAMETER LIST | ||
| PARAMETER NAME | DEFINITION | PARAMETER KEY |
| C-14 EMISSION RATE FROM SOIL | The instantaneous fraction of C-14 in soil removed per unit time by emission of gaseous compounds of C-14. | 7229 |
| C-14 RESIDENCE TIME | A period of time during which a dated substance resided in a designated area. | 7333 |
| CADMIUM ABUNDANCE | 1. The relative amount of cadmium in a material, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of cadmium in a material. 3. The ratio of cadmium in a material. | 1616 |
| CAL1 CALIPER LOG | Caliper (borehole diameter) data from Primary sensor pair of X-Y caliper dataset. | 6811 |
| CAL2 CALIPER LOG | Caliper (borehole diameter) data from Secondary sensor pair of X-Y caliper dataset. | 6812 |
| CALCINE ABUNDANCE | Amount or concentration of a ceramic matrix material into which other materials are incorporated. | 6621 |
| CALCITE ABUNDANCE | 1. CaCO3 (Calcium Carbonate) 2. The relative amount of calcite present in a rock or fracture, commonly expressed as relative volume, mass, percent of occurrence, or percent coverage of a surface. | 4290 |
| CALCIUM | A common alkaline earth element having the symbol Ca, the atomic number 20, an atomic weight of 40.08, a melting point of 845 degrees Celsius, and a boiling point of 1480 degrees Celsius; a fairly soft, silver-white metal found in milk, bone, chalk, and limestone and used as an alloying agent and deoxidizer; compounds are used in cooking, as a bleaching agent, and in making plaster. | 5837 |
| CALCIUM ABUNDANCE | 1. The relative amount of calcium in a material, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of calcium in a material. 3. The ratio of calcium in a material. | 1617 |
| CALCIUM OXIDE ABUNDANCE | The relative amount of calcium oxide present in a rock or fracture, commonly expressed as a relative volume, mass, or percent of occurrence. An odorless, white or grayish - white solid that is very slightly soluble in water; melts at 2614 degrees Celsius and boils at 2850 degrees Celsius. | 5630 |
| CALCIUM-44 ISOTOPIC ABUNDANCE | The relative amount of isotopic Calcium-44 in a material commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of isotopic Calcium-44 in a material. 3. The ratio of isotopic Calcium-44 in a material. | 7101 |
| CALDERA BOUNDARY LOCATION | The location of the apparent boundary of a caldera. | 6431 |
| CANISTER AND DISPOSAL PACKAGE DATA | Information about the physical dimensions of canisters and containers for disposal of high-level nuclear waste. Canisters or Disposal Packages are dimensioned and designed for waste-weight within narrow ranges or variation to limits requirements for waste handling equipment and sizes of storage areas. | 6456 |
| CAPILLARY PRESSURE | The pressure due to capillary action. | 5471 |
| CAPILLARY STRENGTH | (Inverse alpha) entry pressure for water to be drawn into a capillary opening (following the Brooks and Corey [1964] definition of the inverse parameter) or matric potential at the air entry of a capillary opening (following Van Genuchten and Neilsen [1985] definition of the inverse parameter). | 7166 |
| CARBIDE SPENT FUEL | Carbide nuclear fuel; a ceramic formation of uranium in the form of uranium or plutonium monocarbide or dicarbide that has desirable thermal conductivity characteristics; used in advanced reactors that operate at very high temperatures. | 5744 |
| CARBON ABUNDANCE | 1. The relative amount of carbon in a material, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of carbon in a material. 3. The ratio of carbon in a material. | 1619 |
| CARBON DIOXIDE ABUNDANCE | 1. The relative amount of carbon dioxide in a material, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of carbon dioxide in a material. 3. The ratio of carbon dioxide in a material. | 1762 |
| CARBON EXCHANGE RATE | The rate at which two atoms of carbon exchange places, either in two different molecules or in two different positions of the same molecule. | 711 |
| CARBON MONOXIDE ABUNDANCE | 1. The relative amount of carbon monoxide in a material, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of carbon monoxide in a material. 3. The ratio of carbon monoxide in a material. | 1763 |
| CARBON RELEASE | 1. The amount of carbon released into a medium, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of carbon released into a medium. | 6246 |
| CARBON SORPTION DISTRIBUTION COEFFICIENT | The ratio for the various processes by which Carbon binds and distributes itself between other substances. | 6579 |
| CARBON TETRACHLORIDE | CCl4, a toxic, colorless liquid that is insoluble in water and soluble in alcohol; melts at -22.99 degrees Celsius and boils at 76.54 degrees Celsius; it is used in dry cleaning (especially formerly), in fumigation, and for the manufacture of chlorofluoromethane refrigerants. | 5842 |
| CARBON TETRACHLORIDE ABUNDANCE | A toxic, colorless gas slightly soluble in water, used as a refrigerant and gaseous insulator. At higher concentrations it will condense partially to a liquid. | 5511 |
| CARBON-13 ABUNDANCE | 1. The relative amount of Carbon-13 in a material, commonly expressed as a relative volume of mass. 2. Concentration of mass per unit volume of Carbon-13 in a material. 3. The ratio of Carbon-13 in a material. | 7088 |
| CARBON-14 ABUNDANCE | 1. The relative amount of Carbon-14 in a material, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of Carbon-14 in a material. 3. The ratio of Carbon-14 in a material. | 7087 |
| CARBON-14 ISOTOPE | 1. The amount of carbon-14 in a material, commonly expressed as weight per unit sample weight (e.g. parts per million) or as an abundance relative to another isotope of the same element (atom ratio). | 6217 |
| CARBON-14 ISOTOPIC ABUNDANCE | The relative amount of isotopic carbon-14 in a material commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of isotopic carbon-14 in a material. 3. The ratio of isotopic carbon-14 in a material. | 2161 |
| CARBONATE GROUP | 1. A group of compounds formed by the reaction of carbonic acid with either a metal (yielding a salt, such as Calcium Carbonate) or an organic compound (yielding an ester, such as diethyl Carbonate). 2. Related to, of, or containing such a compound. 3. Substances containing the carbonate ion, (CO3)(-2). | 5845 |
| CARBONATE GROUP ABUNDANCE | 1. The relative amount of carbonate in a material, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of carbonate in a material. 3. The ratio of carbonate in a material. | 1764 |
| CARBONIC ACID ABUNDANCE | The relative amount of carbonic acid present in a rock or fracture, commonly expressed as a relative volume, mass, or percent of occurrence. | 6273 |
| CARBOXIN ABUNDANCE | The relative amount of carboxin present in a rock or fracture, commonly expressed as a relative volume, mass, or percent of occurrence. A white solid that melts at 91 degress Celsius; used as a fungicide. | 5783 |
| CATEGORY 1 HORIZONTAL SEISMIC RESPONSE SPECTRUM FOR ACCELERA | A response spectrum for the horizontal component of acceleration as a function of frequency for Category 1 ground motion. | 6912 |
| CATEGORY 1 VERTICAL SEISMIC RESPONSE SPECTRUM FOR ACCELERATI | A response spectrum for the vertical component of acceleration as a function of frequency for Category 1 ground motion. | 6913 |
| CATEGORY 2 HORIZONTAL SEISMIC RESPONSE SPECTRUM FOR ACCELERA | A response spectrum for the horizontal component of acceleration as a function of frequency for Category 2 ground motion. | 6914 |
| CATEGORY 2 VERTICAL SEISMIC RESPONSE SPECTRUM FOR ACCELERATI | A response spectrum for the vertical component of acceleration as a function of frequency for Category 2 ground motion. | 6915 |
| CATION EXCHANGE CAPACITY | A measure of readily available cations held on exchange sites expressed in milliequivalents per 100 grams of soil, rock or other material. | 6615 |
| CDF'S FOR WASTE-PACKAGE FAILURE FROM CORROSION AND ROCKFALL | 6488 | |
| CEILING HEIGHT OF HOMES | The average ceiling height of the liveable space of a home. | 7224 |
| CELL ENUMERATION | Culturable microscopic counts of microbes performed with spread plates, expressed as volume, mass or percentage. | 6446 |
| CEMENT CHARACTERISTICS | Properties of cement including chemical, mineralogical, thermal, and mechanical properties. | 6861 |
| CEMENT MATERIALS ALTERATION BY GROUND WATER | The alteration of cement materials by ground water. | 6539 |
| CENSUS DATA | Census data from the Bureau of the Census. | 6923 |
| CENSUS GEOGRAPHY | Deliniation or systematic arrangement of constituent census area elements. | 7175 |
| CERAMIC SPENT FUEL | 5745 | |
| CERIUM ABUNDANCE | 1. The relative amount of cerium in a material, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of cerium in a material. 3. The ratio of cerium in a material. | 1620 |
| CERIUM OXIDE ABUNDANCE | 1. The relative amount of Cerium Oxide in a material, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of Cerium Oxide in a material. 3. The ratio of Cerium Oxide in a material. | 6377 |
| CESIUM ABUNDANCE | 1. The relative amount of cesium in a material, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of cesium in a material. 3. The ratio of cesium in a material. | 1621 |
| CESIUM OXIDE ABUNDANCE | 1. The relative amount of Cesium Oxide in a material, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of Cesium Oxide in a material. 3. The ratio of Cesium Oxide in amaterial. | 6378 |
| CESIUM RELEASE | 1. The relative amount of cesium released into a medium, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of cesium released into a medium. An atomic weight of 132.905, a melting point of 28 degrees Celsius, and a boiling point of 705 degrees Celsius; a soft solid that becomes liquid at just above normal room temperature; the most reactive of all elements. | 5641 |
| CESIUM SORPTION | A general term for the various processes by which Cesium binds to another substance, especially the process of absorption (taking in the other substance completely) or adsorption (holding the other substance on the surface). | 7334 |
| CESIUM SORPTION COEFFICIENT ONTO COLLOIDS | Sorption coefficient onto reversible colloids for Cesium sorption. | 7285 |
| CESIUM SORPTION DISTRIBUTION COEFFICIENT | The ratio for the various processes by which Cesium binds or distributes itself between other substances. | 6159 |
| CESIUM-135 ISOTOPIC ABUNDANCE | The relative amount of isotopic cesium-135 in a material commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of isotopic cesium-135 in a material. 3. The ratio of isotopic cesium-135 in a material. | 6520 |
| CESIUM-137 ISOTOPE | A radioactive isotope of the element Cesium with a half-life of 2.06 years that emits negative beta particles during decay. | 6028 |
| CESIUM-137 ISOTOPIC ABUNDANCE | 1. The relative amount of isotopic cesium-137 in a material, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of isotopic cesium-137 in a material. 3. The ratio of isotopic cesium-137 in a material. | 6240 |
| CHABAZITE ABUNDANCE | The relative amount of chabazite present in a rock or fracture, commonly expressed as relative volume, mass, or percent of occurrence. | 6010 |
| CHANNEL GRADIENT | The slope of a stream bed, equal to the angle between a horizontal plane and the water surface or channel floor of the stream, measured in the direction of flow. | 5738 |
| CHEMICAL CHARACTERISTICS OF CEMENT GROUT | The qualities of cement grout that are directly related to it's chemical composition including but not limited to the oxide weight percent composition of its's concrete components, all additives, and cement portion. | 7115 |
| CHEMICAL CHARACTERISTICS OF GROUND SUPPORT MATERIALS | The qualities of Ground Support Materials that are directly related to it's chemical composition, including but not limited to it's iron/carbon composition and all additives. | 7118 |
| CHEMICAL COMPOSITION OF SPENT FUEL | The general composition of spent fuel which includes but is not limited to it's signature elemental species (i.e., uranium, plutonium, thorium, etc.), the type of cladding used, and the type and amount of radionuclides present. | 7112 |
| CHEMICAL COMPOUND | Substances composed of two or more elements united chemically in definate proportions by mass. | 7131 |
| CHEMICAL FACIES | 1. The unique chemical characteristic of a rock unit, usually reflecting the conditions of its origin. 2. A zone within a rock unit that was altered by chemical reaction. | 45 |
| CHEMICAL KINETICS | The study of the rates and mechanisms of chemical reactions. | 6415 |
| CHEMICAL REACTION OF COLLOID | A balanced chemical equation in which a colloid-forming species appears as a reactant and/or product. | 1562 |
| CHEMICAL SPECIATION | The identity of inorganic chemical species in solution based on concentration. | 1518 |
| CHEMICAL STRUCTURE | A precise specification of the three-dimensional disposition of all atoms constituting a chemical species in a solid phase or in solution. | 1561 |
| CHLORDANE ABUNDANCE | The relative amount of chlordane present in a rock or fracture or material, commonly expressed as a relative volume, mass, or percent of occurrence. A toxic, colorless, viscous liquid; insoluble in water; used as an insecticide and a fumigant. | 5675 |
| CHLORIDE ABUNDANCE | 1. The relative amount of chloride in a material, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of chloride in a material. 3. The ratio of chloride in a material. | 5492 |
| CHLORIDE/BROMIDE RATIO | The amount of Chloride/Bromide in a material commonly expressed as weight per unit sample weight (e.g., parts per million) or as an abundance relative to another isotope of a different element (atom ratio). | 6409 |
| CHLORINE ABUNDANCE | 1. The relative amount of chlorine in a material, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of chlorine in a material. 3. The ratio of chlorine in a material. | 1622 |
| CHLORINE RELEASE | 1. The relative amount of chlorine released into a medium, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of chlorine released into a medium. | 6247 |
| CHLORINE SORPTION DISTRIBUTION COEFFICIENT | The ratio for the various processes by which Chlorine binds and distributes itself between other substances. | 6580 |
| CHLORINE-35/CHLORINE-37 RATIO | In a material containing Chlorine, the ratio of the number of atoms of the isotope Chlorine-35 to the atoms of the isotope Chlorine-37. | 7305 |
| CHLORINE-36/CHLORINE ISOTOPIC RATIO | The initial amount of Chlorine-36/Chlorine in a material commonly expressed as weight per unit sample weight (e.g., parts per million) or as an abundance relative to another isotope of the same element (atom ratio). | 5689 |
| CHLORINE-36/CHLORINE-37 RATIO | in a material containing chlorine, the ratio of the number of atoms of the isotope Chlorine-36 to the number of atoms of the isotope Chlorine-37. | 7304 |
| CHLORINE/BROMINE RATIO | The amount of Chlorine/Bromine in a material commonly expressed as weight per unit sample weight (e.g., parts per million) or as an abundance relative to another isotope of a different element (atom ratio). | 5692 |
| CHLORITE ABUNDANCE | 1. The relative amount of chlorite in a material, commonly expressed as a relative volume, mass, or percent of occurance. 2. Concentration of mass per unit volume of chlorite in a material. 3. The ratio of chlorite in a material. | 1766 |
| CHLOROBENZENE ABUNDANCE | The relative amount of chlorobenzene present in a rock or fracture, commonly expressed as a relative volume, mass, or percent of occurrence. | 5658 |
| CHLORODIBROMOMETHANE ABUNDANCE | The relative amount of chlorodibromomethane present in a rock of fracture, commonly expressed as a relative volume, mass, or percent of occurrence. | 5654 |
| CHLOROETHANE ABUNDANCE | 1. The relative amount of Chloroethane in a material commonly expressed as mass per unit volume. 2. Concentration of mass per unit volume of Chloroethane in a material. | 5512 |
| CHLOROFORM ABUNDANCE | 1. A colorless heavy, volatile, toxic, liquid; slightly soluble in water and miscible with alcohol. 2. Trichloromethane. | 5513 |
| CHLOROMETHANE ABUNDANCE | A colorless, noncorrosive liquefiable gas which condenses to a colorless liquid; used as a refrigerant and as a catalyst carrier in the manufacture of butyl ruber, aka - Methyl chloride. | 5514 |
| CHOLESTEROL ABUNDANCE | 1. The relative amount of Cholesterol in a material, commonly expressed as a relative volume or mass. 2. Concentration or mass per unit volume of Cholesterol in a material. 3. The ratio of Cholesterol in a material. | 6876 |
| CHROMIC OXIDE | (Cr2O3); very hard, hexagonal green crystals; insoluble in water, acids, and alkalis; melts at about 2265^oC and boils at 4000^oC; used as a pigment, catalyst, an abrasive, and for various other industrial purposes. | 6404 |
| CHROMIUM ABUNDANCE | 1. The relative amount of chromium in a material, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of chromium in a material. 3. The ratio of chromium in a material. | 1623 |
| CHROMIUM OXIDE ABUNDANCE | 1. The relative amount of Chromium Oxide in a material, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of Chromium Oxide in a material. 3. The ratio of Chromium Oxide in a material. | 6414 |
| CHRONIC BREATHING RATE | The volume of air inhaled (cubic meters per day). | 6824 |
| CHRYSENE ABUNDANCE | 1. The relative amount of chrysene in a material, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of chrysene in a material. 3. The ratio of chrysene in a material. | 1767 |
| CILD CONDUCTIVITY | Conductivity measured by Induction Log, Deep Investigation. | 6802 |
| CILM CONDUCTIVITY | Conductivity measured by Induction Log, Medium Investigation. | 6803 |
| CIS-1,2-DICHLOROETHENE ABUNDANCE | The relative amount of cis-1,2-dichloroethene present in a rock or fracture, commonly expressed as a relative volume, mass, or percent of occurrence. | 5793 |
| CIS-1,2-DICHLOROETHYLENE ABUNDANCE | The relative amount of cis-1,2-dichloroethylene present in a rock or fracture, commonly expressed as a relative volume, mass, or percent of occurrence. | 5720 |
| CIS-1,3-DICHLOROPROPENE ABUNDANCE | The relative amount of cis-1,3-dichloropropene present in a rock or fracture, commonly expressed as a relative volume, mass, or percent of occurrence. | 5653 |
| CITRATE-UTILIZING BACTERIA | 6190 | |
| CLADDING FAILURE | The fraction of cladding that has perforated (failed) and unzipped (exposing fuel) in a waste package as a function of time from repositoring closure. | 5739 |
| CLADDING FAILURE FRACTION | An estimated statistical-rate of failure of fuel rods that result in fuel leakage into a reactor-core. Limitation of fuel assembly inspection procedures and treatement of fuel-failure rate information as propriety by industry, are factors that prohibit precise failiure rate specification. Reference:Section 2.5, Defective Fuel, DOE/RW-0814 Volume 1, "Characteristics of Spent Fuel, High-Level Waste,........" December 1987. | 6636 |
| CLAY ANALYSIS | The geochemistry of clay, expressed as the weight percent of oxides and the exchangeable cation compositions based on normalization to oxygen anions. | 6532 |
| CLAY LAYERS | The percentage of (inter) stratification of clay, determined by x-ray powder diffraction patterns. | 6710 |
| CLAY MINERALS ABUNDANCE | The relative amount of Clay Minerals present in a rock or fracture, commonly expressed as relative volume, mass, percent of occurrence, or percent coverage of a surface. | 5710 |
| CLIMATE DURATION | The length of time that a location experiences a given climate state. | 7161 |
| CLIMATE HISTORY | A stratigraphic record of one or more climate properties, such as temperature or precipitation, for a geographic site or region. | 100 |
| CLINOPTILOLITE ABUNDANCE | The relative amount of clinoptilolite present in a rock or fracture, commonly expressed as relative volume, mass, or percent of occurrence. The chemical composition of the mineral Clinoptilolite, quantified as weight percentages of oxides, molecular proportions, and/or end member proportions. | 4362 |
| CLINOPYROXENE ABUNDANCE | The relative amount of clinopyroxene present in a rock or fracture, commonly expressed as a relative volume, mass, or percent of occurrence. | 6149 |
| CLINOZOISITE ABUNDANCE | The relative amount of clinozoisite present in a rock or fracture, commonly expressed as relative volume, mass, or percent of occurrence. | 6628 |
| CLOUD COVER | The portion of the sky cover over a region that is attributed to clouds, usually expressed in terms of tenths of sky covered. | 540 |
| CLOUD HEIGHT | The height of a cloud base above local terrain. | 6561 |
| COBALT ABUNDANCE | 1. The relative amount of cobalt in a material, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of cobalt in a material. 3. The ratio of cobalt in a material. | 1624 |
| COBALT RELEASE | 1. The relative amount of cobalt released into a medium, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of cobalt released into a medium. | 6249 |
| COEFFICIENT OF CONSOLIDATION | A coefficient utilized in the theory of consolidation which contains the physical constants of a soil affecting its rate of volume change. | 1139 |
| COEFFICIENT OF DETERMINATION | (r2) A number between 0 and 1 that represents the proportion of the variability in a dependent variable that is accounted for by independent variables. | 6678 |
| COEFFICIENT OF FRICTION | A constant that, when multiplied by the normal force between two bodies that are in surface contact and are in motion relative to each other, gives the force of friction necessary to maintain uniform motion. | 81 |
| COHESIVE STRENGTH | 1. Strength arising from the cohesive forces between molecules of the same material. 2. The theoretical stress required to induce fracture in a body without any accompanying plastic deformation. 3. The intrinsic shear strength of intact or fractured rock. 4. Shear strength at zero normal stress. (The y-intercept in the Mohr-Coulomb failure criterion.) | 73 |
| COLIFORM | 1. Any fermentative, Gram-negative, rod-shaped anaerobic bacteria, typically found in the intestinal tracts of humans and other animals. 2. Specifically, any of such bacteria that ferment lactose. | 6047 |
| COLIFORM ABUNDANCE | The relative amount of coliform present in a rock or fracture, commonly expressed as a relative volume, mass, or percent of occurrence. Any fermentative, gram-negative, rod-shaped anaerobic bacteria, typically found in the intenstinal tracts of humans and other animals. | 5650 |
| COLLECTIVE RADIATION DOSE | A collective radiation dose applied to population or group of individuals; that is a unit for expecting the dose when summed across all person in a specified population of group. One person-rem equals 0.01 person-sieverts (Sv). | 6708 |
| COLLOID ATTACHMENT RATE CONSTANT | The rate constant governing colloid attachment from rock surfaces. | 6976 |
| COLLOID BREAKTHROUGH CURVE | A flow through column experiment expressed as a concentration of colloids in eluant as a function of the amount of injection fluid. | 7293 |
| COLLOID COMPOSITION | An identified phase, or an elemental analysis. | 7072 |
| COLLOID CONCENTRATION | The amount of colloidal material suspended in fluid. | 1520 |
| COLLOID DETACHMENT RATE CONSTANT | The rate constant governing colloid detachment from rock surfaces, calculated from attachment rate constants and retardation factors obtained from RELAP simulations. | 6975 |
| COLLOID FRACTION UNRETARDED | The fraction of colloid that travels unretarded through fractured rock or unconsolidated sediment. | 7292 |
| COLLOID RETARDATION FACTOR | Retardation of radionuclides irreversibly sorbed on colloids relative to groundwater velocity. | 6991 |
| COLLOID SIZE | The physical dimension of a colloidal particle suspended in solution, generally expressed as a diameter of a particle assumed to be spherical. | 1522 |
| COLLOIDS FORMATION | The formation of particles in the size range of 1 micron to 1 nm from the degradation of source materials (waste form materials, corrosion materials) or the aggregation/precipitation of these materials from solution. Colloid formation results from several factors, including chemical reactions involving the source materials, water chemistry, and waster flow rates. | 7194 |
| COLLOIDS STABILITY | The condition in which hydrophobic colloids are kinetically stabilized by electrostatic forces that are influenced by ionic strength, cation valence, etc.; are thus prevented from coagulating and remain suspended in a liquid or gaseous medium; and are therefore amenable to being transported. | 7196 |
| COLOR | 1. The sensation, determined by wavelength, that is generated by light in the visible spetrum. 2. The characteristic of light that produces specific degrees of hue, saturation, and brightness. | 5801 |
| COMMERCIAL SPENT FUEL WASTE FORM CHARACTERISTICS | This parameter is for use when referencing the Commercial Spent Fuel Waste Form Characteristics Database. | 6565 |
| COMMERCIAL SPENT FUEL WASTE STREAMS | Annual arrival characteristics (burnups and enrichments) of commercial light-water reactor (LWR) fuel. | 6950 |
| COMMERCIAL SPENT NUCLEAR FUEL | (Defined for the Yucca Mountain repository to be) (1) Fuel from commercial light-water reactors (LWRs) that includes fuel from pressurized-water reactors (PWR) and boiling-water reactor (BWR); (2) fuel from non-LWR reactors including commercial gas-cooled reactors; (3) fuel from demonstration- program reactors, university programs and other industrial sources; and (4) damaged/discarded fuel elements. | 6669 |
| COMMERCIAL SPENT NUCLEAR FUEL DISCHARGES | Historical and projected discharges from commercial light-water reactors (LWR) that includes fuel from pressurized-water reactors (PWR) and boiling-water reactors (BWR). | 6951 |
| COMPARISON OF FAILURE FROM ROCKFALL AND CORROSION | 6489 | |
| COMPRESSIBILITY | The extent to which a material, such as backfill, reduces its volume when it is subjected to compressive stresses. | 932 |
| COMPRESSIVE STRENGTH | The maximum compressive stress that can be applied to a material, under given conditions, before failure occurs. | 75 |
| CONCENTRATION | 1. The amount of a component in a given area at a given time. 2. The amount of solute dissolved in a given quantity of solution, expressed as mass, volume, or weight percent. 3. The measured effluent concentration divided by the initial tracer concentration. | 6505 |
| CONCENTRATION OF STABLE CARBON IN AIR | The mass of stable carbon in air per unit volume. | 7234 |
| CONCENTRATION OF STABLE CARBON IN WATER | The mass of stable carbon in water per unit volume. | 7235 |
| CONCRETE ADMIXTURES | The ingredients in concrete other than cement, water, and aggregates that are added to the mixture immediately before or after mixing. | 6916 |
| CONCRETE PROPERTIES | The properties of concrete including, but not limited to, compressive strengths, elastic moduli, Poisson's Ratio, and tensile strengths. | 6725 |
| CONCRETION | A mass or aggregate of mineral matter that has distinct boundaries with the rock within which it was formed and is enclosed. Typically have rough, oblate spheroidal shapes. Quantity expressed as petrographic modal counts and/or a percentage of rock mass. | 6570 |
| CONDENSATION RATE | The rate at which water accumulates on structures within the storage drift and drift walls. | 7338 |
| CONDUIT DIAMETER | The length of a line segment passing through the center of a tube, pipe, channel, or protected trough used to convey fluids or contain electric wires. | 6473 |
| CONDUIT INTERSECTION PROBABILITY | Probability of volcanic conduit intersecting two drifts. | 6968 |
| CONSUMPTION | The amount of a substance consumed during a specific period of time. | 6794 |
| CONTACT ALTITUDE | The vertical distance to a reference point or datum plane, such as mean sea level or relative to the earth's surface; boundary of the surface between two distinct kinds of rocks, or two rocks of different ages. | 40 |
| CONTACT ATTITUDE | A description of the relation of a directional feature in a boundary surface between two distinct kinds or rocks, or rocks of different ages. The attitude of planar features (bedding, foliation, joints, etc.) is described by giving the strike and dip relative to a horizontal plane. The attitude of a linear feature (fold axis, lineation, etc.) is described by giving the bearing (the horizontal projection) and plunge of the linear feature. | 20 |
| CONTACT LOCATION | The geographic location of a geologic contact. | 6541 |
| CONTACT TYPE | The type of surface between two types or ages of rock. | 42 |
| CONTAINER COMPOSITION | The chemical/material components, expressed as percentages, of a package designed and/or constructed to contain high-level radioactive waste to be emplaced in a geologic repository. | 617 |
| CONTAINER CORROSION INITIATION TIME | The time at which the corrosion process starts. | 1392 |
| CONTAINER DEGRADATION MODE PROBABILITY | The measure of the uncertainty associated with a mechanism of degradation of a container designed to hold radioactive waste. | 1391 |
| CONTAINER DEGRADATION MODES | The mechanical or physicochemical methods by which container elements (including shell and internal component materials) designed to hold radioactive waste are degraded in physical condition. | 1388 |
| CONTAINER FAILURE MODES | Any chemical or mechanical mechanism that compromises the integrity of the metal barrier portion of a waste package that is placed around a waste form. | 1553 |
| CONTAINER FAILURE TIME | The time elapsed between initial emplacement of a container holding high-level radioactive waste in a geologic repository and the containers failure due to mechanical and/or chemical conditions imposed by the environment or the container contents. | 1554 |
| CONTAINER STRESS CORROSION CRACKING INTENSITY | The amount of stress corrosion cracking in a waste container. | 664 |
| CONTROLLING SEISMIC EVENT LOCATION | The location of the underground nuclear explosion or 10000-yr cumulative slip earthquakes that would produce the most severe ground motions at the site at frequencies of engineering significance. | 1383 |
| CONTROLS AND STANDARDS FOR EXPERIMENTS | Different methods used for calculating sorption ratios. | 6518 |
| CONVERGENCE | The relative inward movement of the wall of an opening. | 745 |
| CONVERGENCE RATE | The amount of convergence per unit time. | 746 |
| CONVERSION FACTOR | A numerical factor by which one must multiply or divide a quantity expressed in terms of one type of unit in order to express the quantity in terms of a different type of unit. | 6535 |
| CONVERSION FACTORS FOR CALCULATING ANNUAL BETA-GAMMA DOSE | Conversion factors for calculation of beta-gamma dose to demonstrate compliance with the groundwater protection standard. | 7321 |
| COOLING TIME | Time required for pyroclastic flow from intruding dike to cool to ambient temperature. | 7154 |
| COORDINATE GRID | The surface representation of a coordinate system in the form of a grid. | 6557 |
| COPPER ABUNDANCE | 1. The relative amount of copper in a material, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of copper in a material. 3. The ratio of copper in a material. | 1625 |
| CORE RUN INFORMATION | Core run intervals, depths, recoveries and other information related to core runs (except structural/geologic) from core drilling operations. | 7055 |
| CORONADITE ABUNDANCE | The relative amount of coronadite present in a rock or fracture, commonly expressed as a relative volume, mass, or percent of occurrence. | 6508 |
| CORRELATION COEFFICIENT | (r) A number between -1 and 1 that indicates how closely two variables are related. | 6679 |
| CORROSION ENVIRONMENT | The chemical medium in which corrosion occurs. | 6955 |
| CORROSION POTENTIAL | The potential of a corroding surface, relative to a standard electrode. | 5760 |
| CORROSION PRODUCTS | The amount and type of substances created by the chemical interaction of a material with substances such as air and water present in the environment. | 1550 |
| CORROSION PROTECTION | Material or Procedure that eliminates the corrosion or reduces the rate. | 6667 |
| CORROSION RATE | A measure of the degradation rate of a material. | 650 |
| CORUNDUM ABUNDANCE | Corundum occurs as shapeless grains and masses, or as variously colored rhombohedral crystal, including the gem varieties such as ruby and sapphire. Corundum is extremely tough, has a hardness of 9 on the Mohs scale, and is used industrially as an abrasive. | 6401 |
| COSMOGENIC AGE | A dating method using a cosmogenic nuclide exposed to the action of cosmic rays. This dating method can be used to determine the time since exposure or development of a landform. | 6704 |
| COUNTS | Number of items or events. | 6681 |
| COUPON CORROSION | 6493 | |
| CRISTOBALITE ABUNDANCE | The relative amount of cristobalite present in a rock or fracture, commonly expressed as relative volume, mass, or percent of occurrence. | 4393 |
| CRISTOBALITE/FELDSPAR RATIO | The relationship of proportion between the minerals Cristobalite and Feldspar in a material commonly expressed as weight per unit sample weight (e.g., parts per million) or as an abundance relative to another isotope of a different element (atom ratio). | 6365 |
| CRISTOBALITE/OPAL | 5767 | |
| CRISTOBALITE/OPAL ABUNDANCE | The relative amount of cristobalite/opal present in a rock or fracture, commonly expressed as a relative volume, mass, or percent of occurrence. | 6219 |
| CRITICAL ROCK MASSES FOR VARIOUS WASTE-PACKAGE WALL THICKNES | 6485 | |
| CRITICAL THICKNESS OF SOIL FOR SOIL RESUSPENSION | The thickness of surface soil that is available for suspension/resuspension. | 7255 |
| CRM CORROSION RATES | 6476 | |
| CRM WALL STRESSES | 6477 | |
| CROP AMOUNT RAISED | The amount of agricultural products grown or raised in a specified area. | 775 |
| CROP AREA | The irrigated area in which a particular crop type is grown. | 1530 |
| CROP BIOMASS | Standing plant biomass above the soil per unit area for interception of air particulate matter. It is crop type dependent: Leafy vegetables, Root Vegetables, Fruit, Grain, etc. | 6883 |
| CROP COEFFICIENT | Provides a relationship of the evapotranspiration of a crop species with the evapotranspiration of a reference crop. | 6952 |
| CROP DRY-TO-WET RATIO | The ratio of dry weight to wet (fresh) weight of the crop. This ratio is crop dependent. | 6887 |
| CROP INTERCEPTION FRACTION | The fraction of deposited radioactive material, either by dry or wet deposition processes, that is retained on the plant. In the reference biosphere, irrigation is the only applicable deposition process. | 6934 |
| CROP RESUSPENSION FACTOR | The fraction of material deposited on the ground that is re-suspended into the air. | 6882 |
| CROP TYPES RAISED | The types of agricultural products grown or raised within a specified area. | 776 |
| CROSS-SECTION LOCATION | The geographic location of a cross-section along which a specific study has been performed. | 6736 |
| CRUSTAL MAGMA BODY LOCATION | The three-dimensional location of crustal magma bodies. | 1336 |
| CRYPTOMELANE ABUNDANCE | The relative amount of cryptomelane present in a rock of fracture, commonly expressed as a relative volume, mass, or percent of occurrence. | 6278 |
| CRYSTALLINE SILICA + FELDSPAR ABUNDANCE | The relative amount of Crystalline Silica plus Feldspar present in a rock or fracture, commonly expressed as a relative volume, mass, percent of occurrence, or percent coverage of a surface. | 6956 |
| CUMULATIVE PERCENT OF PARTICLES | The percent of particles (by mass) of a material that passes a given sieve when tested in accordance with ASTM C136, ASTM D422 or similar procedure. | 7189 |
| CUMULATIVE PROBABILITY | Integrating the ratio of the number of outcomes that produce a given event to the total number of possible outcomes. | 6974 |
| CUMULATIVE SEEPAGE VOLUME | The measure of accumulated seepage from a niche or alcove ceiling into a test drip-tray, reported as a volume. | 7162 |
| CUMULATIVE SURFACE FLUX | 5612 | |
| CURIE DEPTH | The depth at which the Curie temperature of the ferromagnetic minerals is reached. | 1369 |
| CURIE TEMPERATURE | The temperature at which ferromagnetism changes to paramagnetism for a specified ferromagnetic material. | 1122 |
| CURIUM ABUNDANCE | 1. The relative amount of Curium in a material, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of Curium in a material. 3. The ratio of Curium in a material. | 6337 |
| CURIUM RELEASE | Release of Curium by physical or chemical means from a system. | 6622 |
| CURIUM SORPTION DISTRIBUTION COEFFICIENT | The ratio for the various processes by which Curium binds and distributes itself between other substances. | 6581 |
| CURIUM-244 ISOTOPIC ABUNDANCE | 1. The relative amount of isotopic curium-244 in a material, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of isotopic curium-244 in a material. 3. The ratio of isotopic curium-244 in a material. | 6238 |
| CURRENT EFFICIENCY | The ratio between the amount of electricity theoretically needed in an electrochemical process and the amount actually used. | 7221 |
| CYANAZINE ABUNDANCE | The relative amount of cyanazine present in a rock or fracture, commonly expressed as a relative volume, mass, or percent of occurrence. A white solid that is soluble in water and alcohol; it melts at 166 degrees Celius; used as an herbicide. | 5775 |
| CYANIDE ABUNDANCE | The relative amount of cyanide present in a rock or fracture, commonly expressed as a relative volume, mass, or percent of occurrence. Any compound containing the CN group and derived from hydrogen cyanide, HCN; especially, the highly toxic potassium cyanide, KCN, and sodium cyanide, NaCN. | 5799 |
| CYCLOATE ABUNDANCE | The relative amount of cycloate present in a rock or fracture, commonly expressed as a relative volume, mass, or percent of occurrence. | 5788 |
| CYMENE ABUNDANCE | The relative amount of cymene present in a rock or fracture, commonly expressed as a relative volume, mass, or percent of occurrence. | 5794 |
| PARAMETER LIST | ||
| PARAMETER NAME | DEFINITION | PARAMETER KEY |
| D SPACING | The interplanar spacing between regularly spaced identical planes in a mineral lattice. | 5487 |
| D-VALUE | The radiation dose which reduces a cell population to a specific percentage (typically 10% or 37%) of the original number of cells, usually expressed in units of kiloGrays (kGy). | 7052 |
| DDD ABUNDANCE | 1. The relative amount of ddd in a material, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of ddd in a material. 3. The ratio of ddd in a material. | 1768 |
| DDE ABUNDANCE | 1. The relative amount of dde in a material, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of dde in a material. 3. The ratio of dde in a material. | 1769 |
| DDT ABUNDANCE | The relative amount of DDT present in a rock or fracture or material, commonly expressed as a relative volume, mass, or percent of occurence. Colorless needles or white to slightly off-white powder, insoluble in water and slightly soluble in alcohol; melts at 108.5 degrees Celsius; used as an insecticide and pesticide. | 5676 |
| DECAY RATE | A measure of the rate at which the nuclide releases radioactive emissions. | 7041 |
| DEEP SOIL DENSITY | Soil mass per unit volume for deep soil. | 6893 |
| DEGRADATION MODEL | A mathematical representation of the intergrated processes (along with any hypotheses required for their description) involved in the reduction of the quality, intergrity, or character of spent nuclear fuel waste forms. | 7106 |
| DEGRADED DRIFT PROFILE | The cross-sectional profile of a drift opening after progressive failure of rock blocks. | 7003 |
| DEHYDRATED SCHOEPITE ABUNDANCE | 1. The relative amount of dehydrated schoepite in a material, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of dehydrated schoepite in a material. 3. The ratio of dehydrated schoepite in a material. | 6466 |
| DELIQUESCENCE POINT | That combination of relative humidity and temperature that causes a given substance to deliquesce. | 6947 |
| DELIQUESENCE RELATIVE HUMIDITY | The Relative Humidity at which a mineral or assemblage of minerals deliquesces. | 7306 |
| DELTA CARBON-13 ISOTOPIC RATIO | Delta 13 C = ((13C/12C)sample - (13C/12C)standard / (13C/12C)standard) x 1.0 E3 where the standard is Peedee Belemnite. Delta Carbon-13 isotopic ratio is expressed as permil. | 2159 |
| DELTA DEUTERIUM ISOTOPIC RATIO | Delta Deuterium = ((2H/H)sample - (2H/H)standard / (2H/H)standard) x 1.0 E3 where the standard is Standard Mean Ocean Water. Delta Deuterium isotopic ratio is expressed as permil. | 2614 |
| DELTA NITROGEN-15 ISOTOPIC RATIO | Delta 15 N = ((15N/14N)sample - (15N/14N)standard / (15N/14N)standard) x 1.0 E3 where the standard is N2 of the atmosphere. Delta Nitrogen-15 isotopic ratio is expressed as permil. | 6451 |
| DELTA OXYGEN-18 ISOTOPIC RATIO | Delta 18 O = ((18O/16O)sample - (18O/16O)standard / (18O/16O)standard) x 1.0 E3 where the standard is Standard Mean Ocean Water. Delta Oxygen-18 isotopic ratio is expressed as permil. | 3112 |
| DELTA POROSITY | The difference between relative humidity, oven-dried (i.e., 60 degrees C) porosity and 105 degrees C oven dried porosity (cm3/cm3). | 6865 |
| DELTA STRONTIUM-87 ISOTOPIC RATIO | Delta 87 Sr = (((87Sr/86Sr)sample - (87Sr/86Sr)standard) / (87Sr/86Sr)standard) x 1.0 E3 where the standard is modern seawater (0.70920). Delta Strontium-87 Isotopic Ratio is expressed as permil. | 6997 |
| DELTA SULFUR-34 ISOTOPIC RATIO | Delta 34 S = ((34S/32S)sample - (34S/32S)standard / (34S/32S)standard) x 1.0 E3 where the standard is meteoritic troilite. Delta Sulfur-34 isotopic ratio is expressed as permil. | 6504 |
| DEOXYRIBONUCLEIC ACID (DNA) | A polymer of nucleotides connected via a phosphatedeoxyribose sugar backbone capable of self-replicating and determining the inherited structure of a cell's protein. The sequence of DNA determines individual hereditary characteristics. | 7218 |
| DEPARTMENT OF ENERGY WASTE | (Defined for the Yucca Mountain repository to be) Solids material including (1) vitrified chemical waste; (2) fuel elements managed by DOE from defense programs and U.S. Navy reactors; (3) fuel from U. S. experimental reactors and research projects; and (4) reactor fuel from foreign research projects. | 6670 |
| DEPOSIT AGE | Thermoluminescence analyses by uranium series dating to determine the time since a material was deposited. | 6705 |
| DEPOSIT UNIT | Definable layer of earth material of any type, either consolidated or unconsolidated, that has accumulated by some natural process or agent. | 6693 |
| DEPOSITION VELOCITY | The ratio of the amount of material deposited on a surface per unit time to the ground level air concentration. Two types of deposition velocities are used: 1. For particles settling near the crop. 2. Element-specific for three groups of elements and used in the air transport model. | 6881 |
| DEPOSITIONAL FACIES | 1. The aspect, appearance, and characteristics of a depositional unit. 2. The presence of preserved features of microrelief that were formed during emplacement of a surficial deposit, such as bars, levees and channels. | 1529 |
| DEPTH OF SURFACE SOIL | Thickness of soil top layer in area of interest. | 6892 |
| DEPTH TO CONTACT | 6435 | |
| DEPTH TO WATER | The measured depth to water from the surface of a borehole. | 5571 |
| DESERT VARNISH AGE | The approximate age of desert varnish deposits on rock faces in a specified region. | 1129 |
| DESERT VARNISH SETTING MORPHOMETRY | 1. The geometric characteristics of the setting in which desert varnish occurs. 2. The degree of packing of surface gravel clasts that define a pavement, the presence or absence of reworked pedogenic calcite and silica clasts, and the degree of rock varnish development on surface clasts. | 322 |
| DESETHYL ATRAZINE ABUNDANCE | The relative amount of desethyl atrazine present in a rock or fracture, commonly expressed as a relative volume, mass, or percent of occurrence. | 5791 |
| DESIGN BASIS EARTHQUAKE SPECTRA | 5811 | |
| DESIGN MATERIAL ABUNDANCE | The mass of a given design material per unit length of drift. | 6967 |
| DESISOPROPYL ATRAZINE ABUNDANCE | The relative amount of desisopropyl present in a rock or fracture, commonly expressed as a relative volume, mass, or percent of occurrence. | 5792 |
| DESORPTION DISTRIBUTION COEFFICIENT | The measured Kd (e.g., mL/g) of a chemical on a material after desorption. | 7170 |
| DETECTION RATIO | The ratio of a tracer (in this case) when detected in the injected material (i.e., core samples, rock layers, etc.). | 6828 |
| DETERGENT ABUNDANCE | 1. The relative amount of detergent in a material, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of detergent in a material. 3. The ratio of detergent in a material. | 6274 |
| DEUTERIUM ISOTOPIC ABUNDANCE | The relative amount of deuterium in a material. | 6697 |
| DEVITRIFIED ROCK TYPE | A rock where the glassy minerals are predominantly absent. | 7336 |
| DEW POINT | The temperature at which water vapor begins to condense. | 1020 |
| DI-N-BUTYLPHTHALATE ABUNDANCE | A combustible, toxic, colorless, stable, oily liquid, insoluble in water and miscible with organic solvents, used as a plasticizer insecticide, and adhesive. | 5546 |
| DI-N-OCTYL PHTHALATE ABUNDANCE | A colorless, oily liquid, used as a plasticizer in the manufacture of plastic products. | 5554 |
| DIAGNOSTIC SOIL HORIZONS | Age-related horizons, such as vesicular A, cambic, argillic, calcic and petrocalcic horizons within soils developed in surficial deposits, which are used to define allostratigraphic units. | 1585 |
| DIBENZO(A,H)ANTHRACENE ABUNDANCE | One of the polycyclic aromatic hydrocarbon (PAH) compounds. This chemical combines with dust particles in the air and is carried into water and soil and onto crops. Benzo(a)anthracene is found in creosote a chemical used to preserve wood. | 5545 |
| DIBROMOCHLOROPROPANE ABUNDANCE | A combustible, carcinogenic, brown liquid, slightly soluble in water and miscible with oils, used as pesticide, nematovide and soil fumigant. | 5518 |
| DIBROMOETHANE ABUNDANCE | The relative amount of dibromoethane present in a rock or fracture, commonly expressed as a relative volume, mass, or percent of occurrence. | 6179 |
| DIBROMOMETHANE ABUNDANCE | A colorless. Poisonous liquid, insoluble in water; used as a solvent in organic synthesis, aka - Ethylene Bromide. | 5520 |
| DICHLOROBROMOMETHANE ABUNDANCE | The relative amount of dichlorobromomethane present in a rock or fracture, commonly expressed as a relative volume, mass, or percent of occurrence. | 5651 |
| DICHLORODIFLUOROMETHANE ABUNDANCE | A nonflammable, narcotic, colorless, noncorrosive gas; insoluble in water and soluble in alcohol. | 5521 |
| DICHLOROMETHANE ABUNDANCE | An organic solvent that looks like water, widely used as an industrial solvent and as paint stripper. It is also a component in certain aerosol and pesticide products and is used in the manufacture of photographic film, aka - Methylene chloride. | 5525 |
| DIELDRIN ABUNDANCE | 1. The relative amount of dieldrin in a material, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of dieldrin in a material. 3. The ratio of dieldrin in a material. | 1773 |
| DIELECTRIC RESISTIVITY | Resistivity for a dielectric log in ohm-m. | 6870 |
| DIESEL-DEGRADING BACTERIA | 6189 | |
| DIETARY FRACTION | The proportion of locally produced feed (versus imported feed) consumed by livestock in the reference biosphere. | 6944 |
| DIETHYLHEXYLPHTHALATE ABUNDANCE | The relative amount of diethylhexylphthalate present in a rock or fracture, commonly expressed as a relative volume, mass, or percent of occurrence. | 5668 |
| DIETHYLPHTHALATE ABUNDANCE | A combustible, toxic, water-white, stable liquid, insoluble in water and miscible with alcohol, used in perfumes, insecticides, and plastics. | 5551 |
| DIFFERENTIAL PRESSURE | A small difference between the pressures at two distinct points in a fluid system. | 5649 |
| DIFFUSION | A key property in radionuclide retardation, expressed as the total quantity of radionuclides diffused through a solid matrix after a time (Qt). | 6680 |
| DIFFUSION COEFFICIENT | The mass of a material diffusing across a unit area of a porous medium along a unit potential gradient in a unit time. | 401 |
| DIFFUSION COEFFICIENT MODEL | A six parameter (stochastic) model to predict an individual observation of the diffusioncoefficient (cm^2/sec) given inputs of z (a standard normal) and the volumetric water content (percent). | 6559 |
| DIKE FLUID FRONT | Vertical length of the leading edge of the magma within the dike, from its source to the leading edge position. | 7294 |
| DIKE LAG RATIO | Ratio of the unwetted dike length to the total length, where the unwetted length is the dike length minus the length of magma column (e.g., leading edge) in the dike. | 7297 |
| DIKE LENGTH | The distance in meters of the dike as measured between the two end points. | 6834 |
| DIKE ORIENTATION | The azimuth of the line that runs parallel to the dike or the line of strike. | 6833 |
| DIKE POINT OF ORIGIN | The x,y location measured in degrees latitude/longitude which marks one end of the tabular igneous intrusion. | 6832 |
| DIKE SHEAR DISPLACEMENT | Movement of the dike walls relative to one another at any position. | 7295 |
| DIKE SHEAR STRESS | Shear stress on the wall of the dike at any position. | 7296 |
| DIKE SINK RATE | Volumetric loss rate from the dike into a sink (e.g., the repository). | 7298 |
| DIKE WIDTH | The breadth of a tabular igneous intrusion that cuts across the beds adjacent rocks. | 6472 |
| DILATION ANGLE | The slope of the dilation curve at the peak stress. | 6397 |
| DILUTION FACTOR | The ratio between the initial contaminant and the highest concentration at a point some distance from the source. | 7000 |
| DIMETHYLPHTHALATE ABUNDANCE | The relative amount of dimethylphthalate present in a rock or fracture, commonly expressed as a relative volume, mass, or percent of occurrence. | 5669 |
| DIOPSIDE ABUNDANCE | The relative amount of Diopside present in a rock or fracture, commonly expressed as relative volume, mass, or percent of occurrence. | 6373 |
| DIPHENAMID ABUNDANCE | The relative amount of diphenamid present in a rock or fracture or material, commonly expressed as a volume, mas, or percent of occurence. A toxic, white solid that is soluble in water and very soluble in alcohol; melts at 134.5-135.5 degrees Celsius; used in the synthesis of antispasmodics and as an herbicide and plant growth regulator. | 5784 |
| DISCHARGE MONITORING LOCATION | Location of discharge monitoring stations. | 6735 |
| DISCHARGE RATE | 1. The volume of water passing a given stream channel cross section during a specified time interval. 2. The volume of water withdrawal from a well, pond or borehole over a given period of time. 3. Volume per unit of time. | 1084 |
| DISCHARGE VOLUME | The volumetric rate at which a fluid flows through an opening. | 6407 |
| DISPERSIVITY | A measure of the ability of the medium to cause longitudinal or transverse spreading of a solute over time relative to the flow lines of the fluid carrying the solute. | 402 |
| DISSOLUTION RATE | The rate at which a gas or solid dissolves in a liquid. | 6209 |
| DISSOLVED GAS CONCENTRATION | The concentration of a dissolved gas, organic or inorganic, contained in liquid, expressd in ppm. | 6981 |
| DISSOLVED SOLIDS | The total amount of dissolved material, organic and inorganic, contained in water or wastes. (Associated with mg/L) | 5575 |
| DISSOLVED SPECIES OXIDATION STATES | Valence-state or distribution of valence states in solution. | 643 |
| DISSOLVED WASTE-ELEMENT SPECIES | One or more chemical forms of a waste element dissolved in a water solution. | 1560 |
| DISTRIBUTION OF ROCK SIZES | 6487 | |
| DISTURBANCE DOCUMENTATION | Area disturbed by Yucca Mountain Project site charactization activities since issuance of the Nevada Air Quality Operating Permit in June 1991. | 6420 |
| DISTURBED-ZONE BOUNDARY LOCATION | The three-dimensional location of the disturbed-zone boundary. | 204 |
| DL VALUES FOR VARIOUS ROCK QUALITY AND PGV'S | 6484 | |
| DOE SNF INVENTORY ACTIVITY | 1)DOE spent nuclear fuel inventory activity. 2)The chemicalcomposition activity expressed for each of the 13 categoriesin terms of curies per metric ton heavy metal (Ci/MTHM) for 47 radionuclides destine for disposal at the repository. | 6457 |
| DOE SNF PERFORMANCE PARAMETER CATEGORIES | Categories which include the characteristics of air dissolution, Wet Dissolution (P6634), and Cladding Failure Fraction (P6636). | 6677 |
| DOE SNF PERFORMANCE PARAMETERS | DOE spent nuclear fuel performance parameters | 6458 |
| DOE SPENT NUCLEAR FUEL CATEGORIES | A description of SNF types characterized by the assembly used to support fuel material, fuel composition, radioactivity, thermal emissivity of containerized SNF, criticality of materials, or dimensions of cladded fuel elements. | 6640 |
| DOLOMITE ABUNDANCE | The relative amount of Dolomite present in a rock or fracture, commonly expressed as relative volume, mass, or percent of occurrence. | 6332 |
| DOSE COEFFICIENT FOR AIR SUBMERSION | An external dose resulting from exposure to a unit air concentration of radionuclides per unit time. | 6903 |
| DOSE COEFFICIENT FOR CONTAMINATED SOIL | An external dose resulting from exposure to a unit soil concentration of radionuclides per unit time (depth dependent). | 6906 |
| DOSE COEFFICIENT FOR WATER IMMERSION | The dose resulting from external exposure to a unit water concentration of a radionuclide per unit time. | 7250 |
| DOSE CONVERSION FACTOR FOR INGESTION | The committed dose equivalent to an organ or tissue or the committed effective dose equivalent from intake of unit activity by ingestion. | 7246 |
| DOSE CONVERSION FACTOR FOR INHALATION | The committed dose equivalent to an organ or tissue or the committed effective dose equivalent from intake of unit activity by inhalation. | 7247 |
| DOSE FACTORS FOR CALCULATING INHALATION DOSE DURING VOLCANIC | Dose factor for converting activity concentration of a radionuclide in the air to the daily inhalation dose to the RMEI. | 7322 |
| DRAINAGE BASIN LOCATION | The geographic location of a region bounded by a divide and occupied by a drainage system. | 6702 |
| DRAINAGE BASIN MORPHOMETRY | The geometric characteristics of drainage basins, which are areas bounded by drainage divides and occupied by a connected drainage system. | 323 |
| DRAINAGE CHANNEL MORPHOMETRY | The form and geometric characteristics of stream channels which are elongated depressions or passage ways containing continuously or periodically flowing water in a stream system. | 324 |
| DRAWDOWN | The lowering of the water level in a well resulting from the withdrawal of water or the difference between the non-pumping water level and pumping water level in a well. | 1086 |
| DRDP RESISTIVITY | Resistivity measured by Dielectric Log, mixed, bed boundary corrected. | 6798 |
| DRFB RESISTIVITY | Resistivity measured by Dielectric Log, far detector, bed boundary corrected. | 6799 |
| DRIFT DIAMETER | 1. The measurement of a drift gauged by a line segment that intersects two directly opposite points and the drift's center. 2. Diameter of an underground opening constructed or excavated to store waste packages. | 6723 |
| DRINKING WATER TREATMENT | The treatment of water by a central drinking water system prior to distribution to service customers. For the reference biosphere there is assumed no treatment. | 6933 |
| DRIP SHIELD GEOMETRY | Drip Shield diameter, and Drip Shield Thickness. | 6793 |
| DRIPPING DURATION | The amount of time that a slight or intermittent water (or other liquid) flow event lasts. | 6784 |
| DRNB RESISTIVITY | Resistivity measured by Dielectric Log, near detector, bed boundary corrected. | 6800 |
| DRXB RESISTIVITY | Resistivity measured by Dielectric Log, crossed, bed boundary corrected. | 6801 |
| DRY BULK DENSITY | 1. The weight of an object or material divided by its volume, minus the volume of its pore spaces. 2. The mass of solid particles per the total volume of soil or rock (source: ASTM D 653). | 5457 |
| DURATION OF HOME IRRIGATION | The length of time (months per year) soil is irrigated. | 6827 |
| DUST SAMPLE MINERALOGY | The mineralogy of respirable dust, total dust, and/or grit-cup dust collected by personal sampling pumps, determined by x-ray diffraction analysis, expressed as abundances. | 6516 |
| DYE DISTRIBUTION | The extent to which an injected or released dye penetrates into the material (i.e., rock) into which it was injected/released. The dye distribution particular to LBNL seepage studies will have depth, length, and width dye distributions, measured in meters, usually. | 6813 |
| DYE-PENETRANT INSPECTION RELIABILITY FACTOR | Ratio of the initial number of flaws over the remaining number of flaws after all detected flaw from dye-penetrant inspection have been repaired. | 7128 |
| DYSPROSIUM ABUNDANCE | 1. The relative amount of dysprosium in a material, commonly expressed as a volume or mass. 2. Concentration of mass per unit volume of dysprosium in a material. 3. The ratio of dysprosium in a material. | 6148 |
| PARAMETER LIST | ||
| PARAMETER NAME | DEFINITION | PARAMETER KEY |
| EARTHQUAKE DURATION | The period of time over which seismic waves from a single earthquake event are detected. | 277 |
| EARTHQUAKE EPICENTER | The point on the Earth's surface that is directly above the focus of an earthquake. | 251 |
| EARTHQUAKE FOCAL MECHANISM | A representation of the orientation of a fault plane, the direction of slip motion along it, and the orientation of the principal axes of compression and tension. | 252 |
| EARTHQUAKE FOCUS | The initial rupture point of an earthquake, where strain energy is first converted to elastic wave energy. | 254 |
| EARTHQUAKE HISTORY | The sequences, amounts, and timing/ages of earthquake events. | 1572 |
| EARTHQUAKE HORIZONTAL ERROR | The longest of the projections of the three semi-axis of the standard error ellipsoid onto the horizontal plane. | 5498 |
| EARTHQUAKE INTENSITY | A measure of earthquake size from felt reports, visual observations, and damage to property and structures. | 1583 |
| EARTHQUAKE MAGNITUDE | A measure of an earthquake's strength or the quantity of strain energy it releases, based on seimographic data. | 250 |
| EARTHQUAKE MAGNITUDE PROBABILITY | The probability that the occurrence of an earthquake above a certain magnitude will occur. Usually depicted as a plot of probability of occurrence vs earthquake magnitude. | 1377 |
| EARTHQUAKE MOMENT | The estimate of the earthquake size in terms of physical moment of the motion (N*m), as determined from seismographic recordings. | 1568 |
| EARTHQUAKE ORIGIN TIME | The Universal Coordinated Time (UTC) or local time at which the earthquake rupture starts. | 255 |
| EARTHQUAKE RECURRENCE INTERVAL | The estimated average amount of time between occurrences of an earthquake of a given or greater magnitude. Usually expressed for a specific fault or a specific seismic source. | 256 |
| EARTHQUAKE RUPTURE MORPHOMETRY | The geometric characteristics of a crack, fault, or other break in a rock body caused by one or more earthquakes. | 325 |
| EARTHQUAKE SENSIBILITY DISTANCE | The maximum distance from the epicenter of an earthquake at which resultant seismic waves can be detected. | 257 |
| EARTHQUAKE STRESS DROP | The reduction in the stress value at the earthquake focus due to fault slippage. | 1569 |
| EARTHQUAKE VERTICAL ERROR | The longest of the projections of the three semi-axis of the standard error ellipsoid onto a vertical line through the center of the ellipsoid. | 5499 |
| EASTERN SLOPE SOIL PROPERTIES | The physical, microbal and/or chemical properties of soil samples from the eastern slope of Yucca Mountain. | 6339 |
| EFFECTIVE ISOTROPIC CONFINING PRESSURE | The confining pressure, equal in all directions minus the stress component due to water (hydrostatic pressure). | 6755 |
| EFFECTIVE PERMEABILITY | The ability of a porous medium, such as a rock body, to absorb one liquid phase when it is in the presence of other liquid phases. | 1116 |
| EFFECTIVE POROSITY | The amount of interconnected pore space and fracture openings available for transmission of fluids (liquid or gas) and/or solute, expressed as the ratio of the volume of interconnected pores and fracture openings to the total volume of soil or rock. | 405 |
| EH | Also known as oxidation-reduction potential, it is voltage difference of an inert electrode immersed in a reversible oxidation-reduction system, expressed in volts. | 6538 |
| ELECTRIC INTENSITY | The magnitude of an electric field at a point in the field that is equal to the force that would be exerted on a small unit charge placed at that point. | 57 |
| ELECTRICAL CONDUCTIVITY | 1) A measure of the salt content of a soil expressed in decisiemens per meter. 2) The degree to which a substance conducts electric current. | 6612 |
| ELECTRICAL CURRENT | The rate of transfer of electrons from one point to another. | 6408 |
| ELECTRICAL CURRENT DENSITY | The amount of current passing through a unit area of equipotential surface. | 7209 |
| ELECTRICAL IMPEDANCE | A measure of the total opposition to electrical current flow. | 6696 |
| ELECTRICAL PROPERTIES OF TUFF | The electrical properties of tuff. | 6574 |
| ELECTRICAL RESISTANCE | 1) That property of a conductor by which the flow of an electric current is opposed. 2) A measure of the moisture content of a soil, determined by measuring the resistance to an electric current between to electrodes buried in the soil. Electrical resistance increases with a decrease in the water content of a soil. | 6648 |
| ELECTRICAL RESISTIVITY | The resistance to the flow of electricity across a unit area provided by a unit length of a material. | 59 |
| ELECTRICAL SPONTANEOUS POTENTIAL | The difference in natural electrical potential between points in the earth. | 58 |
| ELECTROCHEMICAL POTENTIAL | A measure of the corrosion liklihood of a metal under aqueous conditions of interest. | 6523 |
| ELECTROMAGNETIC SPECTRUM | The range of frequencies or wavelengths of electromagnetic radiation. | 1584 |
| ELECTROMAGNETIC TRAVERSE LOCATION | The geographic location of electromagnetic traverses. | 6739 |
| ELECTRON ENERGY LOSS SPECTROSCOPY | A technique for studying atoms, molecules, or solids in which a substance is bombarded with monochromatic electrons, and the energies of scattered electrons are measured to determine the distribution of energy loss. Abbreviated EELS. | 7289 |
| ELONGATION | 1. Elongation is a tensile stretching characteristic of a metal 2. The act or condition of being elongated or extended. | 6607 |
| ELUTED VOLUME | 6198 | |
| EMISSIVITY | The ratio of the radiation emitted by a body to the radiation that would be produced by a perfect blackbody radiator of the same temperature in the same environment. | 6729 |
| EMPLOYMENT | The number of persons with jobs. Measured as Full Time Equivalents (FTEs). | 7033 |
| ENDOSULFAN ABUNDANCE | 1. The relative amount of endosulfan in a material, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of endosulfan in a material. 3. The ratio of endosulfan in a material. | 1778 |
| ENDRIN ABUNDANCE | 1. The relative amount of endrin in a material, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of endrin in a material. 3. The ratio of endrin in a material. | 1779 |
| ENERGY OF FORMATION | The amount of energy involved in the formation of chemical substances. | 604 |
| ENERGY-DISPERSIVE X-RAY DIFFRACTION | A technique in which an energy spectrum is obtained of the x-rays scattered from a polychromatic x-ray beam through a fixed angle by a polycrystalline sample. Abbreviated EDXD. Also known as energy dispersive spectroscopy (EDS). | 7291 |
| ENGINEERED BARRIER SYSTEM | 5746 | |
| ENP POROSITY | Porosity measured by Epithermal Neutron Porosity Log. | 6805 |
| ENTHALPY | The amount of heat absorbed at constant pressure, expressed as joules per mole. | 6597 |
| ENTHALPY OF FORMATION | The standard molar enthalpy of formation of a given mineral, gas, or aqueous species from its elements in their stable phase at reference temperature and pressure. | 605 |
| ENTHALPY OF TRANSITION | The standard molal enthalpy change associated with a specified change of a mineral. | 607 |
| ENTROPY | The standard molal entropy of a given mineral, gas, or aqueous species at reference temperature and pressure. | 611 |
| ENTROPY OF TRANSITION | The standard molal entropy change associated with a specified phase transition of a mineral. | 610 |
| ENVIRONMENTAL JUSTICE - ENVIRONMENTAL BASELINE FILE | A Draft Environmental Impact Statement Supporting Documents category that documents current conditions so that changes pertaining to the fair treatment of people of all races, cultures, incomes, and educational levels with respect to development, implementation, and enforcement of environmental laws, regulations and policies are noted. Fair treatment implies that no population of people should be subject to disproportionate negative environmental impacts of pollution or environmental hazards. | 7060 |
| ENVIRONMENTAL SURVEYS | Surveys to determine the presence or absence of sensitive biological species at a location where project activities will take place. | 6537 |
| EPIDOTE ABUNDANCE | The relative amount of epidote present in a rock or fracture, commonly expressed as relative volume, mass, or percent of occurrence. | 6627 |
| EQUILIBRIUM CONSTANTS | The logarithm of the mass action expression for a chemical reaction that represents the aqueous dissociation of a given mineral, gas, or aqueous species at a specified temperature and pressure. | 612 |
| EQUILIBRIUM CURRENT DENSITY AND POTENTIAL VS. TIME | 5768 | |
| EQUILIBRIUM FACTOR FOR 222RN DECAY PRODUCTS | The ratio of the actual potential alpha energy concentration (PAEC) in air to the PAEC that would prevail if all decay products were in equilibrum with the parent radon. | 7240 |
| EQUILIBRIUM QUOTIENTS | 6424 | |
| ERBIUM ABUNDANCE | 1. The relative amount of Erbium in a material, commonly expressed as a relative volume of mass. 2. Concentration of mass per unit volume of Erbium in a material. 3. The ratio of Erbium in a material. | 7123 |
| ERIONITE ABUNDANCE | The relative amount of erionite present in a rock or fracture, commonly expressed as relative volume, mass, or percent of occurrence. | 4472 |
| EROSION DEPTH | The depth of erosion in relation to the reference datum. | 384 |
| EROSION LOCATIONS | The geographic location of erosional activity. | 320 |
| EROSION RATE | The rate that soil and rock materials are loosened, dissolved, or worn away commonly measured by volume, mass, or thickness per unit time. | 379 |
| EROSION RECURRENCE INTERVAL | The average time interval between occurrences of erosional events of a given magnitude. | 380 |
| EROSIONAL FACIES | The surface form exhibited by some surficial deposits in which an original depositional surface has been eroded. | 1565 |
| ERUPTION EVENT DURATION | The amount of time that volcanic materials are being ejected onto the Earth's surface. | 6839 |
| ERUPTION POWER | Physical energy, expressed in watts, produced from a volcanic eruption. | 6855 |
| ERUPTION VOLUME TOTAL | (Magma + Waste). Total volume (m^3) of magma and waste that will be produced by a specific volcanic eruption. | 6840 |
| ERUPTIVE CENTER SPACING | The distance between eruptive centers. | 7069 |
| ERUPTIVE CONDUIT DIAMETER | The diameter of a volcanic eruptive conduit. | 6838 |
| ESF FRACTURE LOCATION | 5686 | |
| ESTIMATED MEAN EFFECTIVE STRESS | Estimated mean stress (expressed as force per unit area) developed at the points of contact of the soil particles of the soil mass, calculated as one-third the sum of the effective stress components in three orthogonal directions. | 6748 |
| ETHYL BENZENE ABUNDANCE | A toxic, flammable, colorless liquid that is almost insoluble in water and soluble in alcohol, used as a solvent and in the production of styrene, aka - Phenyl ethane. | 5528 |
| ETHYLENE DIBROMIDE ABUNDANCE | A non flammable, toxic, carcinogenic, colorless liquid that is slightly soluble in water and miscible with most organic solvents, used as a solvent and fumigant. | 5529 |
| EUROPIUM ABUNDANCE | 1. The relative amount of europium in a material, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of europium in a material. 3. The ratio of europium in a material. | 1630 |
| EVAPORATION | A process in which a liquid is converted to its vapor phase by adding latent heat to the liquid. | 5716 |
| EVAPORATIVE COOLER USAGE FACTOR | Fraction of time in a given period of time, e.g., in a year, when evaporative coolers are used. | 7259 |
| EVAPOTRANSPIRATION | The total loss of water from a particular area, equal to the sum of the water lost by evaporation from the soil and by transpiration from plants. | 786 |
| EXCITATION FREQUENCY | The number of cycles per unit time at which the state of a system is changed from its ground state to a given excited state. | 6760 |
| EXOTIC | Material unrelated to the material with which it is now associated, and was moved from its place of origin by one of several processes (wind, water, force); commonly expressed as a proportion. | 6752 |
| EXPOSURE LOCATION | The geographic location of an exposure study area. | 6747 |
| EXTENT OF MAPPING | The geographic extent to which mapping was performed. | 6543 |
| EXTREME WIND CHARACTERISTICS | 6134 | |
| PARAMETER LIST | ||
| PARAMETER NAME | DEFINITION | PARAMETER KEY |
| FAULT ATTITUDE | The strike and dip of a fault surface, where strike is the direction or trend taken by a structural surface as it intersects the horizontal datum, and dip is the angle that the planar structure makes with the vector measured perpendicular to the strike and in the vertical plane. | 7 |
| FAULT DISPLACEMENT | The relative amount of movement across a fault surface measured in any direction. | 13 |
| FAULT DISPLACEMENT PROBABILITY | The probability that, within a specified time period, a certain fault displacement will be exceeded at a specified site on or near a fault. Fault Displacement Probability is usually depicted as a plot of probability of exceedence vs total displacement for the time period in question. Total displacement may be that produced by a single displacement episode or by recurrent episodes. | 3 |
| FAULT FREQUENCY | The number of faults per unit distance along a transect at the surface or in the subsurface. | 1307 |
| FAULT LENGTH | The length of a fault along its strike. | 14 |
| FAULT LOCATION | 1. The three-dimensional location of a fault. 2. The geographic location of the trace of the intersection of a fault plane with the earth's surface. | 8 |
| FAULT RECURRENCE INTERVAL | 1. The time between successive faulting events. 2. The average interval of time between successive occurrences of earthquakes of a given size or range of sizes on a fault or fault segment. | 5 |
| FAULT SEGMENT | Section of fault measured along its length defined on the basis of specific geometric structural or displacement characteristics. Fault (rupture) segments specifically refer to a section of faults observed or inferred to rupture during a given earthquake. | 1582 |
| FAULT SLIP RATE | The rate of displacement of a fault commonly as integrated over a specified period of time. | 1304 |
| FAULT TYPE | The type of fault (compression or extension) based on relative movement of adjacent sides of the fault (normal, reverse, or strike slip). | 10 |
| FAULT ZONE WIDTH | The width of a fractured, broken, or brecciated region genetically associated with a fault, measured normal to the strike of the fault. | 15 |
| FAULTING AGE | An informal period of geologic time associated with the formation and/or interval of movement on the fault which may be linked to a specific stratigraphic unit or interval. | 9 |
| FAULTING HISTORY | The sequences, amounts, and timing/ages of displacements on a fault. | 12 |
| FELDSPAR ABUNDANCE | The relative amount of feldspar present in a rock or fracture, commonly expressed as relative volume, mass, or percent of occurrence. | 4491 |
| FELDSPAR COMPOSITION | The chemical composition of the majority of common feldspars expressed in terms of the system: KAlSi3O8--NaAlSi3O8--CaAl2Si2O6, less commonly as BaAl2Si2O8 and (K, Ba)(Al, Si)2Si2O8. The composition is quantified as weight percentages of oxides, molecular proportions, and/or end member proportions. | 6572 |
| FEPS | Features, Events and Processes applicable to the Yucca Mountain Project. | 7262 |
| FERRIC CHLORIDE ABUNDANCE | 1. The relative amount of ferric chloride in a material, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of ferric chloride in a material. 3. The ratio of ferric chloride in a material | 6501 |
| FERRIC ILLITE ABUNDANCE | The relative amount of ferric illite present in a rock or fracture, commonly expressed as a relative volume, mass, or percent of occurrence. An iron rich variety of illite, usually white to pale gray, green, or yellowish-brown monoclinic mica-clay mineral. Occuring in very fine-grained masses, and having the specific gravity if 2.6 to 2.9 and a hardness of 1 to 2 on the Mohs scale. | 5709 |
| FERRIC OXIDE ABUNDANCE | A red-brown to black solid, insoluble in water and soluble in acids; melts at 1565 degrees Celsius. It has a wide range of industrial uses, as in metallurgy, gas purification, and magnetic tapes. | 6405 |
| FINENESS MODULUS | Calculated by adding the total percentage of material in the sample that is coarser in each of the following sieves: #150, #30, #16, #8, #4, 3/8", 3/4", and 1 1/2"; and larger, increasing in ratio of 2 to 1. | 6642 |
| FINITE ELEMENT OF HEAT AND MASS TRANSFER CODE DATA MODEL | Particle tracking technique that models the affects of radionuclide transport in fractured rock media utilizing matrix diffusion and matrix sorption. | 6356 |
| FIOF | Total Liquid and Gas Flux. | 7275 |
| FIOH/FLOF | Heat Flux per Total Liquid and Gas Flux. | 7274 |
| FISSION DENSITY | 6315 | |
| FISSION PRODUCT INVENTORY | Inventory of radionuclides for Commercial Spent Nuclear Fuel Boiling-Water Reactor and Pressurized-Water Reactor wasteforms, along with Defense High-Level Waste and DOE Spent Nuclear Fuel wasteforms. (Ci/Waste Package) | 7049 |
| FISSION PRODUCTS | 6197 | |
| FISSION PRODUCTS SORPTION DISTRIBUTION COEFFICIENT | The ratio for the various processes by which Fission products (Sr and Cs) bind and distributes itself between other substances. | 6987 |
| FITTING PARAMETER | Values determined to provide the best fit of an equation to the data. | 6533 |
| FLAW | A defect in a material, especially one that makes the material unacceptable for standard use. | 7073 |
| FLAW DENSITY | Concentration of flaws per unit volume. | 7074 |
| FLAW FAILURE | The act or state of breakdown or function of flaw due to loss of strength. | 7077 |
| FLAW SHAPE | The outline or external surface defining the special form of a flaw. | 7076 |
| FLAW SIZE DISTRIBUTION | The cumulative distribution function of the flaw size. | 7125 |
| FLAW THICKNESS | The vertical depth of flaw in geometric units. | 7075 |
| FLO(FRACT) | Liquid Flux in Fractures. | 7279 |
| FLO(LIQ) | Flux in Liquid Phase. | 7276 |
| FLO(MATRX) | Liquid Flux in Matrix. | 7280 |
| FLOOD FREQUENCY PROBABILITY | The probability of occurrence that a flooding event of a given magnitude will occur. | 249 |
| FLOOD LOCATION | The geographic location of a flood. | 238 |
| FLOW FOCUSING FACTOR | Factors adjusting the percolation flux distribution from the UZ Site Scale Model in order to account for intermediate-scale heterogeneity (i.e., heterogeneity on a scale smaller than the resolution of the UZ model). | 7324 |
| FLOW INTERVAL | The interval(s), units, and/or depths from which borehole flow is produced; percent of total borehole flow per depth or unit. | 6866 |
| FLOW POINT DEPTH | Flow points that are identified from the temperature log during pumping which correlates to the location of faults within the borehole. | 6862 |
| FLOW VELOCITY | The rate and direction of fluid flow at a given location at a specific time. | 371 |
| FLOWING INTERVAL POROSITY | Volume of pore space in the active flow field relative to the total saturated volume of rock in the fractured media. | 6988 |
| FLOWING INTERVAL SPACING | The spacing measured between the mid points of each flowing interval. | 6783 |
| FLUID COMPOSITION | The components that make up a fluid (or any material that can be considered a fluid) including those that can be produced from it by analysis. | 6494 |
| FLUORANTHENE ABUNDANCE | 1. The relative amount of fluoranthene in a material, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of fluoranthene in a material. 3. The ratio of fluoranthene in a material. | 1780 |
| FLUORENE ABUNDANCE | 1. The relative amount of fluorene in a material, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of fluorene in a material. 3. The ratio of fluorene in a material. | 1781 |
| FLUORESCEIN | Orange-red powder, used as a tracer, sodium derivative, sodium salt, a concentration of mass per unit volume of fluorescein in a material. | 6877 |
| FLUORIDE ABUNDANCE | 1. The relative amount of fluoride in a material, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of fluoride in a material. 3. The ratio of fluoride in a material. | 1782 |
| FLUORINATED BENZOIC ACID ABUNDANCE | 1. The relative amount of fluorinated benzoic acid in a material, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of fluorinated benzoic acid in a material. 3. The ratio of fluorinated benzoic acid in a material. | 7205 |
| FLUORINE ABUNDANCE | 1. The relative amount of fluorine in a material, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of fluorine in a material. 3. The ratio of fluorine in a material. | 1632 |
| FLUORITE ABUNDANCE | The relative amount of Fluorite present in a rock or fracture, commonly expressed as relative volume, mass, or percent of occurrence. | 6327 |
| FOCUSED RESISTIVITY | Resistivity log curves designed to focus the surveying current radially through the rocks in a horizontal, disk shaped pattern. | 6871 |
| FOLD AXIS LOCATION | 1. The geographic location of the line which, moved parallel to itself, generates the form of a fold. 2. The surface trace of the crest or trough of a fold. | 18 |
| FOLDING AGE | The period of time from which a fold in a stratigraphic unit was formed. | 22 |
| FOLDING RATE | The rate at which bending of strata occurs in a designated area. | 6 |
| FOOD YIELD | The amount of a crop harvested per unit area. Measured in kilograms per square meter. | 6940 |
| FORMATION DENSITY CORRECTION CURVE | The amount of correction added to the bulk density reading, providing implied information on density quality and in some cases, information on fractures and other such natural phenomenon. | 7140 |
| FORWARD COLLOID REMOVAL RATE | The forward rate is derived from the filtration factor multiplied by the pore velocity to determine the rate term (l/t). | 6984 |
| FORWARD RATE CONSTANT | Rate constant for the adsorption of aqueous Pu and Am onto iron oxyhydroxide colloids under the no-drip condition. | 7331 |
| FOSSIL ABUNDANCE | A relative or absolute measurement of a species' or other taxonomic category's concentration. Concentration may by in percentages, units per weight sediment, units per volume sediment, units per time, or other measure. | 138 |
| FOSSIL AGE | The period of time from which a fossil was formed. | 1524 |
| FOSSIL TYPES | The type of plant or animal which was preserved. | 145 |
| FRACTION OF AIR-DERIVED CARBON IN PLANTS | The fraction of carbon that is assimilated by plant from air during photosynthesis. | 7232 |
| FRACTION OF CONTAMINATION IN EVAPORATIVE COOLER WATER THAT | Fraction of contamination (e.g., radionuclide concentration) that is transferred from the water used in evaporative cooler to the airstream entering the house. | 7252 |
| FRACTION OF HOUSES WITH EVAPORATIVE COOLERS | Fraction of total number of occupied houses in certain area that have evaporative coolers. | 7258 |
| FRACTION OF PLANT ROOTS IN DEEP SOIL | A parameter used for modeling the behavior of various plant roots in deep soil. | 6895 |
| FRACTION OF PLANT ROOTS IN SURFACE SOIL | A parameter used for modeling the behavior of various plant roots in surface soil. | 6894 |
| FRACTION OF PLUTONIUM IRREVERSIBLY ATTACHED TO UNRETARDED CO | 6593 | |
| FRACTION OF RN-222 FLUX FROM SOIL ENTERING THE HOUSE | Fraction of flux density for Rn-222 exhalation from soil outdoors that enters the house. | 7253 |
| FRACTION OF SOIL-DERIVED CARBON IN PLANTS | The fraction of carbon that is taken up by plant from soil through the root system. | 7233 |
| FRACTION OF STABLE CARBON IN ANIMAL PRODUCTS | The fraction of animal product mass that is carbon. | 7231 |
| FRACTION OF STABLE CARBON IN CROPS | The fraction of crop mass that is carbon. | 7230 |
| FRACTION OF STABLE CARBON IN SOIL | The fraction of soil mass that is carbon. | 7236 |
| FRACTURE - MATRIX INTERACTION | 5696 | |
| FRACTURE AGE | The period of time from which a fracture was formed. | 26 |
| FRACTURE APERTURE | The distance separating the adjacent rock walls of a fracture. | 29 |
| FRACTURE ATTITUDE | 1. Strike & dip of fracture plane, where strike is direction/trend of horizontal intercept w/ fracture plane, and dip is angle of plane below horizontal. 2. Orientation of fracture plane defined by strike & dip, where strike is direction/trend of horizontal intercept w/ fracture plane and dip is angle of plane below horizontal. Orientation may be defined by dip/dip direction of joint plane, where dip direction is measured 90 deg. from strike of joint in direction of dip. See also JOINT ATTITUDE. | 23 |
| FRACTURE CENTER | The center of the fracture with respect to the Detailed Line Survey (i.e., distance above or below the DLS). | 7045 |
| FRACTURE CONNECTIVITY | A measure of the degree of intersection or interconnectedness of individual fracture planes in a fracture network. | 24 |
| FRACTURE CONNECTIVITY PROBABILITY | The mean probability that any two traceplanes of a block are connected through a fracture network. | 6616 |
| FRACTURE DIMENSIONS | The length and width of a fracture. | 6863 |
| FRACTURE EXPRESSION | A qualitative measure of the degree of fracture dominance in relation to other fractures. | 1575 |
| FRACTURE FILL MATERIAL AGE | The age of carbonates or secondary minerals in faults and fractures dated by the uranium-series method. | 5483 |
| FRACTURE FILLING | Mineral material present in the space between the sides of a fracture. | 1523 |
| FRACTURE FREQUENCY | 1. The number of fractures per unit length, area, or volume of a material. 2. The cumulative length of fractures over a unit cross-sectional area or the cumulative planar area of fractures over a unit volume. The fracture intensity unit is 1/length. | 30 |
| FRACTURE HISTORY | The history of a fracture of rock or mineral with or without displacement. | 34 |
| FRACTURE LENGTH | The length of the intersection of a fracture plane with another plane. | 27 |
| FRACTURE LINING MANGANESE AND IRON OXIDE MINERALS | The geochemistry of manganese and iron oxide fracture lining minerals, expressed as the weight percent of oxides, and the exchangeable cation compositions normalized to oxygen anions. | 6528 |
| FRACTURE LINING MANGANESE-OXIDE MINERALS | The geochemistry of manganese-oxide fracture lining minerals: expressed as weight percentage of the observed oxides; and as the molecular proportions of cation compositions, normalized to a variable number of oxygen anions. | 6558 |
| FRACTURE LINING ZEOLITES | The geochemistry of zeolite fracture lining minerals, expressed as the weight percent of oxides, the exchangeable cation compositions based on normalization to oxygen anions, and elemental ratios. | 6529 |
| FRACTURE LIQUID SATURATION | Volume of liquid divided by total fracture pore volume expressed as a fraction. | 7342 |
| FRACTURE LOCATION | The geographic location of a fracture in rock or mineral. | 1301 |
| FRACTURE MINERAL ABUNDANCE | A quantitative survey of naturally occuring minerals in the fracture network of a test block. | 6459 |
| FRACTURE PLANARITY | A descriptor used to represent the overall shape of a fracture. | 7053 |
| FRACTURE ROUGHNESS | A measure of the deviations of a fracture surface from a plane. | 31 |
| FRACTURE SPACING | The measured distance between two individual fractures of the same joint set. | 7044 |
| FRACTURE TUBE PITCH | Angle from the horizontal of a tubular structure along a fracture, within the plane of that fracture. | 1594 |
| FRACTURE TYPE | The type of fracture based on the mode of origin (cooling, drilling, tectonic or impact). | 32 |
| FRAGMENTATION DEPTH | 6470 | |
| FREE ENERGY | A thermodynamic function of the state of a system, providing a measure of the maximum work obtainable from the system under specified conditions. | 616 |
| FREE FRACTION | The fraction of fuel that is immediately released after waste package failure. | 7042 |
| FREE LIQUID FLUX | The fraction of the drift seepage or actual amount of water that flows as free water. | 7111 |
| FREE-WATER EVAPORATION RATE | The amount of water (in units of length, e.g., inches) lost per unit time by evaporation from natural water surface. | 7228 |
| FREQUENCY DISTRIBUTION | The amount of occurrences within a defined interval divided by the total number of occurrences. | 6722 |
| FREQUENCY OF OCCURRENCE | A frequency expressed in terms of percentage, with which a given parameter occurs within a sampled population. This number is used to define the corresponding rock mass category. The frequencies of 5%, 20%, 40%, 70%, and 90% correspond to the rock mass category 1 (the lowest rock mass quality), 2, 3, 4,, and 5 (the highest rock mass quality) within the sample population probed. | 6959 |
| FREUNDLICH ADSORPTION ISOTHERM EQUATION | An equation that describes the way in which the amount of a species sorbed changes as a function of its concentration in solution (at constant temperature). | 7179 |
| FRICTION ANGLE | For an object resting on an inclined surface, the angle of inclination from the horizontal that is reached before the object begins to slide due to the force of gravity. | 79 |
| FRONT ARRIVAL TIME | The time it takes for a wetting front to reach a destination from the time of liguid release to when the dripping actually begins. (Related to seepage studies.) | 6777 |
| FUEL CATEGORY CANISTER SNF LOADING | An estimate of the total number of canisters/containers holding solid high-level nuclear waste for storage in the Yucca Mountain Mined Geologic Disposal System. | 6455 |
| FUEL MEAT SURFACE AREA | 1)A parameter based on the area and weight of fuel meat itself. Calculations were simplified because the chemical form of the meat within each category was the same. Where different geometry's or dimensions contributed to the same category, a dominant type was selected or average values were calculated. | 6635 |
| FULL ENUMERATION | The run of all possible combinations of input parameters defined by expert hazard models. | 7067 |
| FUNCTIONAL POROSITY | The fraction of the total volume of a rock that is occupied by void space plus montmorillonite volume. | 1541 |
| FUNDAMENTAL PHYSICAL CONSTANTS | Any physical or mathematical quantity whose value is fixed. | 6534 |
| FUNGAL BIOMASS | The dry weight of fungal material. | 6651 |
| PARAMETER LIST | ||
| PARAMETER NAME | DEFINITION | PARAMETER KEY |
| GADOLINIUM ABUNDANCE | 1. The relative amount of gadolinium in a material, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of gadolinium in a material. 3. The ratio of gadolinium in a material. | 6144 |
| GALLIUM ABUNDANCE | 1. The relative amount of gallium in a material, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of gallium in a meterial. 3. The ratio of gallium in a material. A rare metallic element with an atomic weight of 69.72, a melting point of 29.79 degrees Celsiusand a boiling point of 2403 degrees Celsius; a silver-white metal some of whose compounds are used as semiconductors. | 6425 |
| GAMMA INTENSITY | The activity of gamma radiation given off by radioactive elements. | 5614 |
| GAS AGE | The period of time from which a gas is determined to have been formed. | 195 |
| GAS CHEMISTRY | 5761 | |
| GAS DENSITY | Absolute density of gas in mass per unit volume of gas | 7269 |
| GAS FLUX | The mass of gas passing through a given area in a given amount of time. | 6924 |
| GAS MOLE FRACTION | The fraction of a single component in a gas mixture divided by the total number of moles in the mixture. | 7150 |
| GAS PRESSURE | Gas from pressure in the rock (See also PNEUMATIC POTENTIAL, PNEUMATIC PRESSURE, and PRESSURE COEFFICIENT). | 7202 |
| GAS SATURATION | The fraction of a given volume that is inhabited by a gas phase. | 7149 |
| GENERA ABUNDANCE | Biological classification ranking between the family and the species, comprising structurally or phylogenetically related species or an isolated species exhibiting unusual differentation, expressed as volume, mass, or percentage. | 6441 |
| GEOLOGIC CORE RECORD | A record showing depth, characteristics, lithology, porosity, permeability, and/or fluid content of borehole cores. | 6527 |
| GEOLOGIC CROSS-SECTION LINE | The surface expression of a vertical plane transecting a geologic map. | 6544 |
| GEOLOGIC FRAMEWORK MODEL 1.0 | 6201 | |
| GEOLOGIC FRAMEWORK MODEL 2.0 | 6182 | |
| GEOLOGIC FRAMEWORK MODEL 2.1 | 6183 | |
| GEOLOGIC FRAMEWORK MODEL 3.0 | 6184 | |
| GEOLOGIC FRAMEWORK MODEL 3.1 | 6202 | |
| GEOLOGIC MAPPING LOCATION | The geographic location of points at which Detailed Line Survey Geologic Mapping was conducted. | 6769 |
| GEOLOGICAL STRENGTH INDEX | An Index related to Q(Rock Mass Quality) and RMR(Rock Mass Rating), used to estimate the strength of rock masses. | 7105 |
| GEOPHYSICAL ANOMALY | The geophysical deviations from the reference fields. | 948 |
| GEOPHYSICAL ANOMALY LOCATION | The gegraphic location of a geophysical anomaly. | 6547 |
| GEOPHYSICAL INTERPRETATION | Geophysical Interpretation is the explanation or delineation, usually graphical, of physical conditions or changes in physical conditions that produce or are capable of producing the geophysical parameters measured in the field. Interpretations of seismic, potential field, radiometric, and integrated measurements are usually in the form of cross-sections or three dimensional plots depicting the causative elements as geologic bodies and features. | 6781 |
| GEOPHYSICAL LOG HEADER | The text at the beginning of a log plot which gives general information about the well and the log, such as well name, depth drilled, location data, log type, depth logged, apparent casing depth, etc. | 6786 |
| GERMANIUM ABUNDANCE | 1. The relative amount of germanium in a material, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of germanium in a meterial. 3. The ratio of germanium in a material. A nonmetallic element with an atomic weight of 72.59, a melting point of 937.4 degrees Celsius, and a boiling point of 2830 degrees Celsius; a grayish-white solid recovered from zinc refining and used as a semiconductor in electronic devices. | 6426 |
| GERMINATION FRACTION | Proportion of viable seeds that germinate under given conditions. | 6979 |
| GLASS ABUNDANCE | 1. The relative amount of glass in a material, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of glass in a material. 3. The ratio of glass in a material. | 1783 |
| GLASS ANALYSIS | The geochemistry of glass, expressed as the weight percent of oxides, the exchangeable cation compositions based on normalization to oxygen anions, and elemental ratios. | 6531 |
| GLASS WASTE FORM | The amount and description of radioactive waste materials encapsulated in (and thus stabilized by) a glass matrix. | 1544 |
| GLASS WASTE FORM ALTERATION BY GROUNDWATER | Defines the alteration of the glass waste form by groundwater. | 6175 |
| GLASS WASTE FORM ALTERATION BY RADIATION | Changes in properties of materials caused by radiation. | 6623 |
| GLUCOSE ABUNDANCE | 1. The relative amount of Glucose in a material, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of Glucose in a material. 3. The ratio of Glucose in a material. | 6306 |
| GLUTAMATE MINERALIZATION | A fatty acid expressed as volume, mass or percentage. | 6444 |
| GOETHITE ABUNDANCE | The relative amount of goethite present in a rock or fracture, commonly expressed as a relative volume, mass, or percent of occurrence. A brittle, yellowish, reddish, and blackish-brown orthorhombic mineral, polymorphous with akaganeite, feroxyhyte, and lepidocrocite; usually earthy to compact or in fiberous colloform masses, having a specific gravity of 3.3 to 4.3 and a hardness of 5 to 5.5 on the Mohs scale; widely found as an alteration product of iron-bearing minerals. | 5712 |
| GOLD ABUNDANCE | 1. The relative amount of gold in a material, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of gold in a material. 3. The ratio of gold in a material. | 1637 |
| GPS SURVEY CONTROL | Location of GPS control points. | 6673 |
| GRAVIMETRIC WATER CONTENT | The ratio of the mass of water in the medium to the mass of solid material with the medium. | 5455 |
| GRAVITY ANOMALIES | Differences between observed gravity values and calculated reference fields. | 1309 |
| GRAVITY GRADIENT | The rate of change in observed or calculated gravity measurements with respect to distance. | 1310 |
| GRAVITY STATION LOCATION | The geographic location of a station at which gravity measurements are taken. | 6545 |
| GREATER-THAN-CLASS-C | (GTCC)GTCC waste is a Low-Level-Waste (LLW) which contains radionuclides concentrations that make it generally unsuitable for near-surface disposal (exceeding Class C limits) as defined in 10 CFR 61.55 Tables 1 and 2 . Disposal may be defined by the NRC and state regulatory agencies on a case by case basis but the low-level Radioactive Waste Policy Amendments Act makes the USDOE responsible for disposal of GTCC waste. GTCC wastes are generated by commercial nuclear power plants. | 6638 |
| GROSS ALPHA INTENSITY | The alpha radio activity measured in water after filtration to remove solids. | 5506 |
| GROSS BETA INTENSITY | The beta radioactivity measured in water after filtration to remove solids. The measurement may refer to beta particles emitted from a specific isotope, such as cesium-137, strontium-90 or yttrium-90 (*Gross Beta disolved as Cesium-137 & **Gross Beta disolved as Strontium-90/Yttrium-90) | 5509 |
| GROUND COVER | The percent of ground covered by vegatation, litter, rocks, soil, or other similar category. | 6730 |
| GROUND MOTION | A general term for all seismic motion, including ground acceleration, velocity, displacement and strain. | 258 |
| GROUND MOTION BIAS | A correction for ground motion as a function of position, relative to area averages on rock sites. | 1378 |
| GROUND MOTION DESIGN BASIS | The seismic acceleration within the ground which serves as the basis for design of structures, excavations and underground openings. | 260 |
| GROUND MOTION MAGNITUDE | A measure of ground motion strength or the quantity of strain energy released by a seismic activity, chemical or nuclear explosion. | 5564 |
| GROUND MOTION PROBABILITY | The probability that, within a specified time period, ground motion exceeding a certain velocity or acceleration will occur at a given location. Ground Motion Probability is usually depicted as a plot of probability of exceedence vs peak ground velocity, peak ground acceleration, or spectral acceleration. The cause may be a single seismological event or the integrated, synergistic effect of multiple events occurring simultaneously or nearly so. | 1382 |
| GROUNDWATER AGE | The age of groundwater (water in the subsurface) as inferred from the decay of a radioisotope or an estimated travel time. | 196 |
| GROUNDWATER COMPOSITION | The indivigual constituents that are contained within the subsurface zone of saturation. | 5620 |
| GROUNDWATER DISCHARGE | The rate of water released from a geohydrologic system during a unit time. | 500 |
| GROUNDWATER DISCHARGE LOCATIONS | The geographic location of a spring, seep, or other groundwater release point. | 103 |
| GROUNDWATER FLOW MODE | The definition of the natural or artificial means which produces the movement of water in the zone of saturation. | 126 |
| GROUNDWATER FLOWPATHS | The three-dimensional path of the movement, or flow, of water in the subsurface. | 424 |
| GROUNDWATER FLUX | The macroscopic measure of flow of groundwater per unit area per unit time based on Darcy's Law. | 503 |
| GROUNDWATER FLUX CHANGE PROBABILITY | The probability of ground-water flux change due to an event or site characteristic. | 1350 |
| GROUNDWATER RECHARGE | The volume of water entering the saturated zone across a horizontal unit area during a unit time. | 501 |
| GROUNDWATER RECHARGE LOCATION | The geographic location of a groundwater recharge site. | 6630 |
| GROUNDWATER SEEPAGE | The amount of ground water that enters a geologic repository through small openings in porous rock. | 1141 |
| GROUNDWATER TRAVEL TIME | The time required for a unit volume of ground water to travel between two locations. The travel time is the length of the flow path divided by the velocity, where velocity is the average ground-water flux passing through the cross-sectional area of the geologic medium through which flow occurs, perpendicular to the flow direction, divided by the effective porosity along the flow path. | 200 |
| GROUNDWATER USAGE | The estimated/expected annual volume of groundwater used by an agricultural/farming community within the critical group. | 7001 |
| GROUNDWATER WITHDRAWAL QUANTITY | The amount of water withdrawn from an aquifer within a given period of time. | 1083 |
| GROW TIME | The number of days from planting to harvest per growing season. | 6941 |
| GROWTH RATE | 1. An expression of the increase in size of an organic object per unit time, usually expressed in both absolute and relative increments. 2. The rate of increase in the cell number or biomass of a population of microorganisms. | 6193 |
| GYPSUM ABUNDANCE | The relative amount of gypsum present in a rock or fracture, commonly expressed as relative volume, mass, or percent of occurrence. | 4589 |
| PARAMETER LIST | ||
| PARAMETER NAME | DEFINITION | PARAMETER KEY |
| HAFNIUM ABUNDANCE | 1. The relative amount of hafnium in a material, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of hafnium in a material. 3. The ratio of hafnium in a material. | 1638 |
| HALF-LIFE | The time required for half of the atoms in any given quantity of a radioactive isotope to decay. | 7040 |
| HARDNESS | 1. A qualitative indication of density and/or resistance of a rock to breaking or crushing. 2. The resistance of a material to penetration by an indenting tool of specified geometry under a calibrated load. 3. Microhardness-Refers to static indentations made with loads not exceeding 1 kgf. The indenter is either the Vickers diamond pyramid or the Knoop elongated diamond pyramid. The procedure for testing is very similar to that of the standard Vickers test performed on a microscopic scale. | 7186 |
| HARVEST INDEX | Ratio of seed, fruit, or tuber dry biomass to total above ground dry biomass. | 7314 |
| HEAT CAPACITY | 1. The ratio of amount of heat applied to a mass to change in temperature produced by this heat; expressed as heat energy required to raise temperature of substance by one deg. C at constant pressure and volume. 2. The ratio of heat energy required to raise temperature of unit mass of a substance by 1 deg. to the amount of heat energy required to produce an equal effect in unit mass of water under conditions of constant pressure (iobaric) or constant volume (isochoric). | 94 |
| HEAT FLUX | The flow of heat across a surface of unit area in a unit amount of time; commonly expressed in units of cal/cm(2) seconds. | 280 |
| HEAT LOSS | Heat input into the experiment minus the measured heat removed from the experiment. | 7135 |
| HEAT REMOVED | The measured heat removed from the experiment through a cooling cap that is maintained at a constant temperature and acts as a heat sink. | 7134 |
| HEAT TRANSFER | The rate of heat (energy flow between objects at different temperatures by any mode of heat transfer, including conduction, convection and thermal radiation. | 7168 |
| HEAT TRANSFER RATE | The rate of heat energy flow between objects at different temperatures by any mode of heat transfer, including conduction, convection and thermal radiation. | 7157 |
| HEATER POWER | A measure of the electrical power (Watts) applied to a heating element that is then transformed into heat energy by the resistance heater. | 5698 |
| HEIGHT ABOVE LAND SURFACE | The vertical distance from land surface to an elevation where a given meteorological condition exists or where some other measurement or observation is made. | 7267 |
| HELIUM ABUNDANCE | 1. The relative amount of helium in a material, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of helium in a material. 3. The ratio of helium in a material. A gaseous element with an atomic weight of 4.0026; and a boiling point of -268.9 degrees Celsius.The first of the noble gas group, it is colorless, odorless, tasteless, and noncombustible. It occurs on earth in natural gas and makes up a small fraction of the atmosphere. | 5763 |
| HELIUM-3 ISOTOPIC ABUNDANCE | 1. The relative amount of Helium-3 Isotope in a material, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of Helium-3 Isotope in a material. 3. The ratio of Helium-3 Isotope in a material. | 6351 |
| HEMATITE ABUNDANCE | The relative amount of hematite present in a rock or fracture, commonly expressed as relative volume, mass, or percent of occurrence. | 4622 |
| HEMOGLOBIN ABUNDANCE | 1. The relative amount of Hemoglobin in a material, commonly expressed as a relative volume or mass. 2. Concentration or mass per unit volume of Hemoglobin in a material. 3. The ratio of Hemoglobin in a material. | 6874 |
| HEPTACHLOR ABUNDANCE | 1. The relative amount of heptachlor in a material, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of heptachlor in a material. 3. The ratio of heptachlor in a material. | 1784 |
| HEPTACHLOR EPOXIDE | 6004 | |
| HEPTACHLOR EPOXIDE ABUNDANCE | 1. The relative amount of heptachlor epoxide in a material, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of heptachlor epoxide in a material. 3. The ratio of heptachlor epoxide in a material. | 1785 |
| HEULANDITE ABUNDANCE | The relative amount of Heulandite present in a rock or fracture, commonly expressed as relative volume, mass, or percent of occurrence. | 6350 |
| HEXACHLOROBENZENE ABUNDANCE | 1. The relative amount of hexachlorobenzene in a material, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of hexachlorobenzene in a material. 3. The ratio of hexachlorobenzene in a material. | 1786 |
| HEXACHLOROBUTADIENE ABUNDANCE | 1. The relative amount of hexachlorobutadiene in a material, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of hexachlorobutadiene in a material. 3. The ratio of hexachlorobutadiene in a material. | 1787 |
| HEXACHLOROCYCLOPENTADIENE ABUNDANCE | 1. The relative amount of hexachlorocyclopentadiene in a material, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of hexachlorocyclopentadiene in a material. 3. The ratio of hexachlorocyclopentadiene in a material. | 1788 |
| HEXACHLOROETHANE ABUNDANCE | 1. The relative amount of hexachloroethane in a material, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of hexachloroethane in a material. 3. The ratio of hexachloroethane in a material. | 1789 |
| HEXAZINONE ABUNDANCE | The relative amount of hexazinone present in a rock or fracture, commonly expressed as a relative volume, mass, or percent of occurrence. | 5785 |
| HIGH LEVEL WASTE GLASS | 5742 | |
| HIGH-LEVEL RADIOACTIVE WASTE | 1)The highly radioactive material resulting from the reprocessing of spent nuclear fuel, including liquid waste produced directly in reprocessing and any solid material derived from such liquid waste that contains fission products in sufficient concentrations.2)Other highly radioactive material that the Commission, consistent with existing law, determines by rule requires permanent isolation.(Def.12, NWPA, as amended).All HLW will be solidified before disposal in the Yucca Mtn MGDS. | 6668 |
| HOLDUP TIME | The number of days between the harvest of a particular crop or product and its consumption by humans. For the reference biosphere, drinking water holdup time is assumed zero. | 6942 |
| HOLLANDITE ABUNDANCE | The relative amount of hollandite present in a rock or fracture, commonly expressed as a relative volume, mass, or percent of occurrence. | 6509 |
| HOLMIUM ABUNDANCE | 1. The relative amount of holmium in a material, commonly expressed as a volume of mass. 2. Concentration of mass per unit volume of holmium in a material. 3. The ratio of holmium in a material. A rare-earth metallic element having an atomic weight of 164.93, a melting point of 1470 degrees Celsius, and a boiling point of 2720 degrees Celsius; used in spectroscopy and electrochemistry. | 6427 |
| HOME IRRIGATION RATE | The amount (inches per year) of irrigation water used. | 6826 |
| HOOP STRESS | 1. The stress in the circumferential (hoop) direction of a cylinder. The effect is to open cracks in the longitudinal cylinder direction. Related to stress intensity factor. 2. The stress in the hoop (circumferential) direction of a cylinder or a circular plate. The effect is to open cracks in the radial direction (perpendicular to the hoop direction) in the cylinder or the circular plate. Related to stress intensity factor. | 7070 |
| HORIZONTAL ANISOTROPY | Ratio of the horizontal permeability along the major axes of the permeability ellipse. | 6989 |
| HORIZONTAL PERMEABILITY CORRECTION FACTOR | Horizontal permeability at a point in time after decaying heat source emplacement divided by horizontal permeability prior to decaying heat source emplacement, expressed as a fraction. | 7347 |
| HORIZONTAL STRESS | In a solid, the horizontal force per unit area, acting on any surface within it, and variously expressed as pounds or tons per square inch, or dynes or kilograms per square centimeter; also by extension, the external pressure which creates the internal force. | 5577 |
| HORNBLENDE ABUNDANCE | 1. The relative amount of horneblende present in a rock or fracture, commonly expressed as relative volume, mass, or percent of occurrence. 2. A mineral of the ferrohornblende-magnesiohornblende series forming minerals of the amphibole group having the general formula Ca2(Mg, Fe(+2))4Al(Si7Al)O22(OH, F)2; occurring as dark green to black crystals and in granular masses, found in many different types of igneous and metamorphic rocks. | 4653 |
| HOUSING UNIT STATISTICS | The number of occupied housing units within the study area at a specified time. | 1210 |
| HUMAN ERROR PROBABILITY | Single-point probability of occurrence of a human error. | 7129 |
| HYDRAULIC CONDUCTIVITY | A measure of the ability of a material to pass water through its connected pores; generally expressed as the volume of water flow in a unit time through a cross section of a unit area under a unit hydraulic gradient, at the prevailing temperature. It is related to the permeability through the fluid's viscosity and density at the prevailing temperature. | 394 |
| HYDRAULIC DIFFUSIVITY | In ground water, the transmissivity divided by the storage coefficient. It is the conductivity of the saturated medium when the unit volume of water moving is that involved in changing the head a unit amount in a unit volume of medium. | 1533 |
| HYDRAULIC GRADIENT | The change in hydraulic head over a given distance. | 1504 |
| HYDRAULIC HEAD | Pressure head (pressure expressed as an equivalent column height of water) plus elevation head (distance above a datum) at a point in an aquifer. | 417 |
| HYDROCARBON PEAK ABSORPTION | 5753 | |
| HYDROGEN ABUNDANCE | 1. The relative amount of hydrogen in a material, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of hydrogen in a material. 3. The ratio of hydrogen in a material. A nonmetallic element with an atomic weight of 1.00797, a melting point of about -259 degrees Celsius, and a boiling point of about -253 degrees Celsius. It is colorless, odorless, and highly flammable. It has two isotopes, deutrium (2H) and tritium (3H). | 5764 |
| HYDROGEN PHOSPHATE ABUNDANCE | The relative amount of hydrogen phosphate present in a rock or fracture, commonly expressed as a relative volume, mass, or percent of occurrence. | 6210 |
| HYDROGEN SULFIDE ABUNDANCE | The relative amount of Hydrogen Sulfide in a material, commonly expressed as a relative volume or mass. | 6610 |
| HYDROGEOLOGIC STRATIGRAPHY | The stratigraphy defined by similar hydrogeologic propertiesof a rock layer or layers. | 6701 |
| HYDROGRAPH | A graphical representation or plot of changes in the flow of water or in the elevation of water level plotted against time. | 7198 |
| HYDROSTRATIGRAPHIC ELEVATION | Hydrogeologic unit layer elevation (in ascii and binary formats). | 7144 |
| HYDROSTRATIGRAPHIC THICKNESS | Hydrogeologic unit layer thickness (in ascii and binary formats). | 7143 |
| HYDROTHERMAL ALTERATION | The effect of heated water on rock. | 1519 |
| HYDROTHERMAL ALTERATION LOCATION | The geographic location of a place where rocks have been altered by the interaction of hydrothermal water with rocks. | 1303 |
| HYDROUS-PHASE MINERAL ALTERATION PROBABILITY (HMAP) | A probability based indicator of hydrous-phase mineral alteration. At locations where the value of HMAP is greater than 0.5 the rock is likely to be altered, where as at values of HMAP less than 0.5 the rock is likely to be unaltered. | 7109 |
| HYDROUS-PHASE MINERAL CONTENT (HPMC) | The combined content of zeolite and clay minerals expressed as fraction of the total sample weight. The specific minerals species that make up HPMC are clinoptilolite, mordenite, chabazite, and smectite. | 7108 |
| HYPERSTHENE ABUNDANCE | The relative amount of Hypersthene present in a rock or fracture, commonly expressed as relative volume, mass, or percent of occurrence. | 6374 |
| PARAMETER LIST | ||
| PARAMETER NAME | DEFINITION | PARAMETER KEY |
| IGNEOUS INTRUSION PROBABILITY | 1. The probability of occurrence that an igneous intrusion event will intersect one or more waste-loaded drifts. 2. The frequency of intersection of the repository footprint by a dike. | 6957 |
| IGNEOUS WASTE PACKAGE DAMAGE FRACTION | Cumulative fraction for number of waste packages damaged in-drift from magmatic intrusion. | 6970 |
| ILLITE ABUNDANCE | The relative amount of Illite present in a rock or fracture, commonly expressed as relative volume, mass, or percent of occurrence. | 6336 |
| ILMENITE ABUNDANCE | The relative amount of ilmenite present in a rock or fracture, commonly expressed as a relative volume, mass, or percent of occurrence. | 6258 |
| IN SITU STRAIN | 1. The change in length per unit length of rock material in a given direction. 2. The change in length per unit length of alloy material in a given direction. | 230 |
| IN SITU STRAIN CHANGES PROBABILITY | The probability of in situ strain changes due to an event or site characteristic. | 1359 |
| IN SITU STRESS | The unperturbed state of stress at any point in the earth's crust. | 235 |
| IN SITU STRESS ORIENTATION | The direction of the principal in situ stresses in a geologic material. | 242 |
| IN-DRIFT ORGANIC MATERIAL | Chemical composition and properties of organic materials in the potential repository. | 6859 |
| INCORPORATION RATIO | The particle size at which waste particles are too large to be incorporated into the ash plume and transported downwind in the model. | 7013 |
| INDANE ABUNDANCE | 1. The relative amount of Indane in a material, commonly expressed as a volume or mass. 2. Concentration of mass per unit volume of Indane in a material. 3. The ratio of Indane in a material. | 6718 |
| INDENO(1,2,3-CD) PYRENE ABUNDANCE | The relative amount of indeno(1,2,3-cd) pyrene present in a rock or fracture, commonly expressed as a relative volume, mass, or percent of occurrence. | 5670 |
| INDIUM ABUNDANCE | 1. The relative amount of Indium in a material, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of Indium in a material. 3. The ratio of Indium in a material. | 6497 |
| INDUCED POLARIZATION | The production of an electric displacement in earth media brought about (induced) by application of an electric field. Induced electrical polarization is manifested either by the slow decay of voltage in earth media following the abrupt cessation of the inducing current pulse (time domain induced polarization) or by a frequency dependance of the apparent resistivity of the earth media (frequency domain induced polarization). | 6416 |
| INEEL SITE SPECIFIC SPENT NUCLEAR FUEL CHARACTERISTICS | A database maintained for the Department of Energy, Idaho Operation Office that contains complex wide information of the DOE owned Spent Nuclear Fuel characteristics. | 6671 |
| INFILTRATION | The amount of water entering the unsaturated zone across the atmosphere-soil/rock interface. | 1581 |
| INFILTRATION RATE | The rate at which a soil under specific conditions can absorb falling rain or melting snow; expressed in depth of water per unit time. | 7064 |
| INFILTRATION UNCERTAINTY | A number or group of numbers representing the upper and lower bounds and a mean of a range of values for selected infiltration- model input parameters considered potentially significant to model sensitivity and having a normal, lognormal, or uniform distribution and defined by either actual values or a scaling factor (multiplier) | 7207 |
| INHALATION DOSE ENHANCEMENT FACTOR | The ratio of dose calculated using inhalation dose conversion factors for the actual size distribution of aerosols to that calculated using dose conversion factors for 1-micrometer aerosols. | 7260 |
| INHALATION EXPOSURE TIME | The amount of time (hours per year) that a reference person is exposed to and is inhaling contaminated, resuspended dust. | 6823 |
| INITIAL DRY MASS | The mass of dried material. | 6787 |
| INITIAL ERUPTION VELOCITY | The rate as measured in unit distance per unit time in which a volcanic material exits a vent. | 6854 |
| INITIAL URANIUM-234/URANIUM-238 ISOTOPIC RATIO | The initial amount of uranium-234/uranium-238 in a material commonly expressed as weight per unit sample weight (e.g., parts per million) or as an abundance relative to another isotope of the same element (atom ratio). | 6649 |
| INITIAL URANIUM-234/URANIUM-238 RADIOACTIVITY RATIO | The radioactivity of Uranium-234 divided by the radioactivity of Uranium-238 extrapolated to the time of formation of a rock or mineral. | 7288 |
| INJECTION INTERVAL PRESSURE | Pressure inside injection interval. | 7184 |
| INJECTION RETURN VOLUME | Volume of water in an overflow reservoir which retains overflow from the injection process in a seepage test. This volume increases over test duration with occasional decreases for recycling to supplied injection volume. | 7183 |
| INORGANIC CARBON | The quantity of inorganic carbon in a measured sample; often used as an indicator of the amount of inorganic pollution in a water sample. | 6774 |
| INSTRUMENT LOCATION | The location of an instrument or sensor within a given medium or area, usually noted in terms of coordinates or other position designations. | 6689 |
| INTACT ROCK COHESION | Shear strength at zero normal stress for the intact rock. (MPa) | 7023 |
| INTACT ROCK FRICTION ANGLE | For the rock matrix, the angle forming the slope of the Mohr Coulomb failure envelope. (degrees) | 7024 |
| INTACT ROCK POISSON'S RATIO | The absolute ratio of transverse strain to axial strain, rock matrix. | 7022 |
| INTACT ROCK TENSILE STRENGTH | The load per unit area at which an unconfined specimen of the rock matrix will fail in simple tension, usually with values expressed in MegaPascal (MPa). | 7020 |
| INTACT ROCK TRIAXIAL COMPRESSIVE STRENGTH | The stress at which a cylindrical specimen of the rock matrix will fail in a triaxial compression test. This strength is for a given set of environmental conditions (e.g., temperature, saturation, confining pressure) (MPa). | 7215 |
| INTACT ROCK UNIAXIAL COMPRESSIVE STRENGTH | The load per unit area at which an unconfined cylindrical specimen of the rock matrix will fail in a simple compression test. (MPa) | 7019 |
| INTACT ROCK YOUNG'S MODULUS | The ratio between the tensile or compressive stress and strain within the elastic limit for the rock matrix. (Pa) | 7021 |
| INTAKE RATE | The rate at which liquid is released or injected into a medium (rock, fracture, borehole, etc.). | 6946 |
| INTERPRETED ARRIVAL TIME | On a recording of geophone acceleration as a function of elapsed time (zero time being the moment when the seismic disturbance is imparted into the subsurface materials), the time picked by the geophysicist as being the arrival of a seismic wave at the geophone (receiver). The seismic wave selected will be either compressional or shear, depending on whether compressional wave or shear wave velocity is being calculated. | 6962 |
| INTERPRETED COMPRESSION WAVE VELOCITY | The compression wave velocity calculated as the straight-line distance divided by the interpreted compression wave arrival time from the source to the receiver. | 7032 |
| INTERPRETED SHEAR WAVE VELOCITY | The shear wave velocity calculated as the straight-line distance divided by the interpreted compression wave arrival time from the source to the receiver. | 6963 |
| INTRUSION TEMPERATURE | 6471 | |
| INVERT GEOMETRY | Invert Height, and the Intersection of Invert at the Drift Wall. | 6792 |
| IODIDE ABUNDANCE | 1. The relative amount of iodide in a material, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of iodide in a material. 3. The ratio of iodide in a material. | 1791 |
| IODIDE SORPTION DISTRIBUTION COEFFICIENT | The ratio (Kd) for the various processes by which Iodide binds and distributes itself between other substances. | 6998 |
| IODINE ABUNDANCE | 1. The relative amount of iodine in a material, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of iodine in a material. 3. The ratio of iodine in a material. An nonmetallic element with a melting point of 113.5 degrees Celsius, and a boiling point of 184 degrees Celsius; occurs as grayish-black slates or granules. | 5702 |
| IODINE FUEL CLAD GAP INVENTORY | 5635 | |
| IODINE RELEASE | 1. The relative amount of iodine released into a medium, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of iodine released into a medium. An element with an atomic weight of 126.9045, a melting point of 113.5 degrees Celsius, and a boiling point of 184 degrees Celsius; occurs as grayish - black slates or granules. | 5637 |
| IODINE SORPTION DISTRIBUTION COEFFICIENT | The ratio for the various processes by which Iodine binds and distributes itself between other substances. | 6582 |
| IODINE-129 ISOTOPIC ABUNDANCE | 1. The relative amount of isotopic iodine-129 in a material, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of isotopic iodine-129 in a material. 3. The ratio of isotopic iodine-129 in a material. | 6243 |
| ION CURRENT | The current caused by the flow of atoms, radicals, or molecules that have gained or lost one or more electrons and have thus acquired a net negative or positive charge. | 6204 |
| ION EXCHANGE | Replacement of a chemical species in a material. | 6608 |
| IONIC STRENGTH | A measure of the level of electrical force in an electrolytic solution related to the molar concentration and the ionic charge of the medium. | 1119 |
| IRIDIUM ABUNDANCE | 1. The relative amount of iridium in a material, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of iridium in a material. 3. The ratio of iridium in a material. | 1644 |
| IRON ABUNDANCE | 1. The relative amount of iron in a material, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of iron in a material. 3. The ratio of iron in a material. | 1645 |
| IRON OXIDE ABUNDANCE | The relative amount of iron oxide present in a rock or fracture, commonly expressed as a relative volume, mass, or percent of occurrence. Any of various other iron - oxygen compounds in which iron appears in several oxidation states; colors range from reddish - brown to black. | 5629 |
| IRON OXIDE, AS FE2O3 | The amount of iron +3 oxidation state, reported as FE2O3, or FE^+3 | 6566 |
| IRON-54 ISOTOPIC ABUNDANCE | The relative amount of isotopic Iron-54 in a material commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of isotopic Iron-54 in a material. 3. The ratio of isotopic Iron-54 in a material. | 7103 |
| IRRIGATION RATE | The amount of water, measured in inches per year, added to the soil through irrigation to grow a specific crop. | 6938 |
| IRRIGATION TIME | The number of months per year that irrigation is applied for a crop type. Irrigation Time equals Grow Time (in months) multiplied by the number of growing seasons for that crop. | 6937 |
| IRRIGATION WATER CONTAMINATION FRACTION | The proportion of water used for irrigation that is contaminated. For the reference biosphere this fraction is assumed to be 1.0. | 6936 |
| IRRIGATION WATER SOURCE | The source of irrigation water. For the reference biosphere this is assumed to be local groundwater. | 6932 |
| ISOPHORONE ABUNDANCE | 1. The relative amount of isophorone in a material, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of isophorone in a material. 3. The ratio of isophorone in a material. | 1796 |
| ISOPROPYLBENZENE ABUNDANCE | The relative amount of isopropylbenzene present in a rock or fracture, commonly expressed as a relative volume, mass, or percent of occurrence. | 5657 |
| ISOTOPIC DATING SAMPLE LOCATION | The geographic location at which an isotopic dating sample is taken. | 6685 |
| ISOTOPIC VALUE | The relative amount of a given isotope in a sample with respect to some standard ratio, usually expressed in units of per mil (0.1%). | 6953 |
| PARAMETER LIST | ||
| PARAMETER NAME | DEFINITION | PARAMETER KEY |
| JOINT ANGLE | The angle of the horizontal to the vertical components of a joint or slip-plane. | 6663 |
| JOINT ATTITUDE | Orientation and degree of inclination from the horizontal of a fracture plane along which there is no movement. See also FRACTURE ATTITUDE. | 6495 |
| JOINT COHESION | The cohesion within a joint or slip-plane. | 6664 |
| JOINT FRICTION | The friction within a joint or slip-plane. | 6666 |
| JOINT NORMAL STIFFNESS | For a given joint normal stress, the instantaneous slope of the plot of joint normal stress versus joint closure. | 7171 |
| JOINT NUMBER (JN) | A Q-system parameter that corresponds to the number of joint sets of distinct orientation present in the rock mass. | 6960 |
| JOINT RADIUS | A measure used to approximate the extent of a joint plane, such that the shape of the joint plane is assumed to be circular. | 7148 |
| JOINT SHEAR STIFFNESS | For a given joint shear stress, the instantaneous slope of the plot of the joint shear stress versus joint slip. | 7172 |
| JOINT TENSION | The tension within a joint or slip-plane. | 6665 |
| PARAMETER LIST | ||
| PARAMETER NAME | DEFINITION | PARAMETER KEY |
| KAOLINITE ABUNDANCE | The relative amount of kaolinite present in a rock or fracture, commonly expressed as relative volume, mass, or percent of occurrence. | 4724 |
| PARAMETER LIST | ||
| PARAMETER NAME | DEFINITION | PARAMETER KEY |
| LAND COVER | The extent and distribution of zones of land cover. | 6692 |
| LAND OWNERSHIP | The identification of the owner of a piece of land. | 6550 |
| LAND OWNERSHIP BOUNDARY | The geographic location of the boundary of a piece of land owned by a particular person or entity. | 6551 |
| LAND USE | The extent and distribution of zones of land use. | 6691 |
| LANDFORM | A three-dimensional part of the land surface, formed of soil, sediment, or rock that is distinctive because of its shape, that is significant for land use or to landscape genesis, that repeats in various landscapes, and that also has a fairly consistent position relative to surrounding landforms. | 6726 |
| LANTANIUM ABUNDANCE | 1. The relative amount of lantanium in a material, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of lantaium in a material. 3. The ratio of lantanium in a material. | 5502 |
| LANTHANUM ABUNDANCE | 1. The relative amount of lanthanum in a material, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of lanthanum in a material. 3. The ratio of lanthanum in a material. | 1647 |
| LANTHANUM OXIDE ABUNDANCE | 1. The relative amount of Lanthanum Oxide in a material, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of Lanthanum Oxide in a material. 3. The ratio of Lanthanum Oxide in a material. | 6379 |
| LATENT CANCER FATALITIES | Deaths from cancer resulting from, and occuring some time after, exposure to ionizing radiation or other carcinogens. | 6709 |
| LAUMONTITE ABUNDANCE | The relative amount of laumontite present in a rock or fracture, commonly expressed as a relative volume, mass, or percent of occurrence. | 6297 |
| LEACHING | The downward migration of radionuclides dissolved in percolating waters. | 7036 |
| LEACHING COEFFICIENT | Removal of constituents and/or contaminants from surface soils through leaching into deep layers. | 6930 |
| LEAD ABUNDANCE | 1. The relative amount of lead in a material, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of lead in a material. 3. The ratio of lead in a material. | 1649 |
| LEAD OXIDE ABUNDANCE | 1. The relative amount of Lead Oxide in a material, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of Lead Oxide in a material. 3. The ratio of Lead Oxide in a material. | 6750 |
| LEAD SORPTION DISTRIBUTION COEFFICIENT | The ratio for the various processes by which Lead binds and distributes itself between other substances. | 6585 |
| LEAD-206/LEAD-204 ISOTOPIC RATIO | The amount of lead-206/lead-204 in a material commonly expressed as weight per unit sample weight (e.g. parts per million) or as an abundance relative to another isotope of the same element (atom ratio). | 2815 |
| LEAD-206/LEAD-207 ISOTOPIC RATIO | The amount of lead-206/lead-207 in a material commonly expressed as weight per unit sample weight (e.g. parts per million) or as an abundance relative to another isotope of the same element (atom ratio). Pb-206/Pb-208 are formed by the radioactive decay of thorium. | 5567 |
| LEAD-206/LEAD-208 ISOTOPIC RATIO | The amound of lead-206/lead-208 in a material commonly expressed as weight per unit sample weight (e.g. parts per million) or as an abundance relative to another iostope of the same element (atom ratio). Pb-206/Pb-208 are formed by the radioactive decay of thorium. | 5568 |
| LEAD-206/URANIUM-238 ISOTOPIC RATIO | The amount of lead-206/uranium-238 in a material commonly expressed as weight per unit sample weight (e.g. parts per million) or as an abundance relative to another isotope of a different element (atom ratio). | 5569 |
| LEAD-207/LEAD-204 ISOTOPIC RATIO | The amount of lead-207/lead-204 in a material commonly expressed as weight per unit sample weight (e.g. parts per million) or as an abundance relative to another isotope of the same element (atom ratio). | 2817 |
| LEAD-207/URANIUM-235 ISOTOPIC RATIO | The amount of lead-207/uranium-235 in a material commonly expressed as weight per unit sample weight (e.g. parts per million) or as an abundance relative to another isotope of a different element (atom ratio). | 5570 |
| LEAD-208/LEAD-204 ISOTOPIC RATIO | The amount of lead-208/lead-204 in a material commonly expressed as weight per unit sample weight (e.g. parts per million) or as an abundance relative to another isotope of the same element (atom ratio). | 2819 |
| LEAF AREA INDEX | The ratio of the leaf area of a plant to the ground area. | 6653 |
| LESSER MINERAL OCCURRENCES | Includes any minerals from quantitative XRD results which occur as trace mineral abundances (less than 1% by sample weight), or includes larger mineral abundances which occur infrequently in the samples analyzed. These minerals are often grouped together in reports as "other" or "miscellaneous" minerals. | 6753 |
| LIGHTNING STRIKE FREQUENCY | The number of lightning strikes to earth or a feature on earth's surface in a particular area per unit time either during a storm event or over a specified time period. | 1101 |
| LIGHTNING STRIKE LOCATION | The geographic location of a lightning strike. | 1100 |
| LINDANE ABUNDANCE | The relative amount of lindane present in a rock or fracture, commonly expressed as a relative volume, mass, or percent of occurrence. Used as a insecticide, pediculicide, and scabicide. | 5677 |
| LINE STORAGE DEFICIT MASS | Mass of water left in downstream end of injection system, between shut-off valve and outlet | 7082 |
| LINEAMENT LOCATION | The location of a lineament. | 6433 |
| LINEAMENT MORPHOMETRY | The measurement and mathematical analysis of an extensively straight or gently curved topographic feature that might reflect the crustal structure of a region. | 327 |
| LIQUID DENSITY | Absolute density of liquid in mass per unit volume of liquid | 7268 |
| LIQUID LIMIT | 1. The minimum amount of water that, when mixed with a given sediment, will cause the sediment to flow plastically. 2. The water content at which a soil that is being dried changes from a liquid to a plastic state. | 50 |
| LIQUID RELEASE FLUX | 6207 | |
| LIQUID RELEASE RATE | 6208 | |
| LIQUID RELEASE TIME | The (absolute/relative) time at which a liquid (i.e., a dye, water, a tracer of some sort) is released into the test material (i.e., rock). | 6814 |
| LIQUID RETURN TIME | The (absolute/relative) time at which a liquid (i.e., a dye, water, a tracer of some sort) returns to a reservoir after it has been released into the test material (i.e., rock). | 6815 |
| LIQUID-MAGMA ASCENT VELOCITIES | 6474 | |
| LITHIC FRAGMENT ABUNDANCE | The amount of lithic fragments per unit volume of rock. | 1527 |
| LITHIOPHORITE ABUNDANCE | The relative amount of lithiophorite present in a rock or fracture, commonly expressed as a relative volume, mass, or percent of occurrence. | 6279 |
| LITHIUM ABUNDANCE | 1. The relative amount of lithium in a material, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of lithium in a material. 3. The ratio of lithium in a material. | 1650 |
| LITHIUM OXIDE ABUNDANCE | 1. The relative amount of Lithium Oxide in a material, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of Lithium Oxide in a material. 3. The ratio of Lithium Oxide in a material. | 6380 |
| LITHIUM RELEASE | 1. The relative amount of lithium released into a medium, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of lithium released into a medium. A very soft, silvery metallic element with an atomic weight of 6.941, a melting point of 179 degrees Celsius, and a boiling point of 1317 degrees Celsius; an alkali metal, and the lightest of all solid elements. | 5647 |
| LITHOFACIES | A lateral, mappable subdivision of a designated stratigraphic unit, distinguished from adjacent subdivisions on the basis of lithologic types or features. | 46 |
| LITHOLOGIC DESCRIPTION | A qualitative or quantitative description of various textural, mineralogical, or other physical characteristics of rock type. | 117 |
| LITHOPHYSAE CHARACTERISTICS | Lithophysae characteristics describe lithophysae diameter and porosity distributions. | 7104 |
| LITHOPHYSAL ABUNDANCE | The number of lithophysae present per unit volume of rock. | 1143 |
| LITHOSTRATIGRAPHIC THICKNESS | The thickness of a body of rock that is dominated by a certain lithographic type or combination of types possessing other unifying lithogic features. It may consist of isochore. | 5572 |
| LITHOSTRATIGRAPHY | The element of stratigraphy that deals with the lithology of strata and with their organization into units based on lithologic featues. | 1590 |
| LN RESISTIVITY | Long Normal (LN) resistivity measuring system has a deep depth of investigation (64 inches) and is designed to measure the resistivity of the uncontaminated virgin formation minimizing the influence of the invaded zone. | 6817 |
| LOCALLY PRODUCED FOOD CONSUMPTION RATE | 1) Amount of locally produced food consumed by the Critical Group; measured per person/per year by mass (dry foods) or volume (liquid). 2) The frequency of consumption of locally produced foods. | 6931 |
| LOCATION | 1. A position (usually denoted by coordinates) in space; a place where a structure, object, etc. is or is to be; a situation. 2. An area marked off or designated for a specific purpose. | 6439 |
| LONGEVITY CHARACTERISTICS OF CEMENT GROUT | The amount of time cement grout maintains a specific/desired level of performance. Performance being based on expected levels of material and chemical behavior. | 7116 |
| LONGEVITY CHARACTERISTICS OF EMPLACEMENT DRIFT INVERT MATERI | The amount of time material to be used in the emplace drift inverts maintain a specific/desired level of performance. Performance being based on expected levels of material and chemical behavior. | 7133 |
| LONGEVITY CHARACTERISTICS OF GROUND SUPPORT MATERIALS | The amount of time that ground support materials maintain a specific/desired level of performance. Performance being based on material and chemical behavior. | 7119 |
| LOW-AMPLITUDE MATERIAL DAMPING RATIO | The ratio of the energy dissipated to energy input during one cycle of loading at low strain values (< 0.001%). | 6758 |
| LOW-AMPLITUDE SHEAR MODULUS | Shear modulus determined as the ratio of the shearing stress divided by the shearing strain at low strain values (< 0.001%). | 6757 |
| LOW-AMPLITUDE SHEAR WAVE VELOCITY | The velocity of a seismic body wave propagating with a shearing motion that oscillates particles at right angles to the direction of propagation measured at low strain values (< 0.001%). | 6756 |
| LSN NEUTRON COUNT | Neutron Count measured by Long Spaced Tool. | 6808 |
| LUTETIUM ABUNDANCE | 1. The relative amount of lutetium in a material, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of lutetium in a material. 3. The ratio of lutetium in a material. | 1651 |
| PARAMETER LIST | ||
| PARAMETER NAME | DEFINITION | PARAMETER KEY |
| MAGMA CONTACT COOLING PARAMETERS | Reduction in magma temperature resulting from contact with underground objects such as waste packages. | 6851 |
| MAGMA COOLING HISTORY | Calculated cooling times for magma emplaced in repository drifts. | 7329 |
| MAGMA FRAGMENTATION DEPTH | The depth at which magma breaks into pieces or is no longer one solid, fluid mass. | 6842 |
| MAGMA HEAT CAPACITY | Heat energy required to raise the temperature of the magma by one degree Celsius at constant pressure and volume. | 6850 |
| MAGMA LIQUID/ASH PARTICLE RATIO AT SURFACE | Ratio of the number of magma particles to the number of ash particles at the surface. | 6844 |
| MAGMA LIQUID/ASH PARTICLE RATIO SUBSURFACE | Ratio of the number of magma particles to the number of ash particles in the subsurface. | 6843 |
| MAGMA PRESSURE | The pressure exerted by magma, expressed in MPa. 1 MPa = 10 bars. | 7241 |
| MAGMA SUBSURFACE TEMPERATURE | Temperature of magma in degrees Celcius at repository depth. | 6849 |
| MAGMA TYPE/CHEMISTRY | Chemical composition of magma. | 6847 |
| MAGMA VELOCITY/CONDUIT | The rate at which magma moves through a volcanic conduit. | 6841 |
| MAGMA VISCOSITY | The property of magma that offers internal resistance to flow. | 6848 |
| MAGMATIC ASH PARTICLE DENSITY | The mass of magmatic ash material divided by the volume of ash material, not including mass and volume of matrix or pore space. | 6857 |
| MAGNESIUM | A silvery alkaline-earth metallic element having the symbol Mg, the atomic number 12, an atomic weight of 24.305, a melting point of 650 degrees Celsius, and a boiling point of 1107 degrees Celsius. The lightest of all structural metals, magnesium is used in alloys for structural parts, in pyrotechnics, and in batteries. | 6086 |
| MAGNESIUM ABUNDANCE | 1. The relative amount of magnesium in a material, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of magnesium in a material. 3. The ratio of magnesium in a material. | 1652 |
| MAGNESIUM OXIDE ABUNDANCE | The relative amount of magnesium oxide present in a rock of fracture, commonly expressed as a relative volume, mass, or percent of occurrence. A Colorless to white powder existing in two forms, light and fluffy (light magnesium oxide) or dense (heavy magnesium oxide); slightly soluble in water and soluble in acids; melts at 2852 degrees Celsius and boils at 3600 degrees Celsius. | 5631 |
| MAGNESIUM-26 ISOTOPIC ABUNDANCE | The relative amount of isotopic Magnesium-26 in a material commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of isotopic Magnesium-26 in a material. 3. The ratio of isotopic Magnesium-26 in a material. | 7097 |
| MAGNESIUM/MAGNESIUM + IRON RATIO | The amount of Magnesium/Magnesium+Iron in a material commonly expressed as weight per unit sample weight (e.g., parts per million) or as an abundance relative to a compound (atom ratio). | 6406 |
| MAGNETIC ANOMALIES | Variation of the observed magnetic field of the earth from the reference field. | 1312 |
| MAGNETIC ANOMALY LOCATION | The geographic location of a magnetic anomaly. | 6548 |
| MAGNETIC DECLINATION | The difference between magnetic north and true north. | 63 |
| MAGNETIC FIELD INTENSITY | Electromagnetism. A vector field used to describe magnetic phenomena, having the property that the curl of the field is equal to the free current density vector in the meter-kilogram-second system of units. | 65 |
| MAGNETIC GRADIENTS | The rate of change in magnetic measurements or calculated values with respect to distance. | 1314 |
| MAGNETIC INCLINATION | The angle at which magnetic-field lines plunge. | 64 |
| MAGNETIC POLARITY | That component of a rock that exhibits distinct, positive and negative magnetic poles and that is susceptible to and dependent upon moderate, applied/induced magnetic fields and changes in such fields. | 66 |
| MAGNETIC SHOT LOCATION | The geographic location of a station at which magnetic shots are taken. | 6546 |
| MAGNETIC SUSCEPTIBILITY | The ratio of magnetization of a substance to the applied magnetic field strength; in an isotropic medium, the susceptibility is a scalar quantity; otherwise it would be a tensor. | 67 |
| MAGNETIC TRAVERSE LOCATION | The geographic location of natural magnetic (including air) traverses. | 6744 |
| MAGNETITE ABUNDANCE | The relative amount of magnetite present in a rock or fracture, commonly expressed as a relative volume, mass, or percent of occurrence. | 6259 |
| MAGNETOMETRIC RESISTIVITY STUDY LOCATION | Geographic location of a line along which a magnetometric resistivity study was performed. | 6742 |
| MAGNETOTELLURIC METHOD | An electromagnetic method of surveying in which natural electric and magnetic fields are measured. | 285 |
| MAGNETOTELLURIC SURVEY LOCATION | The geographic location where measurements for natural electric and magnetic fields were conducted. | 6743 |
| MANGANESE ABUNDANCE | 1. The relative amount of manganese in a material, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of manganese in a material. 3. The ratio of manganese in a material. | 1653 |
| MANGANESE OXIDE ABUNDANCE | The relative amount of manganese oxide present in a rock or fracture, commonly expressed as a relative volume, mass, percent of occurrence, or percent coverage of a surface. | 6014 |
| MANGANESE-55 ISOTOPIC ABUNDANCE | The relative amount of isotopic Manganese-55 in a material commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of isotopic Manganese-55 in a material. 3. The ratio of isotopic Manganese-55 in a material. | 7102 |
| MANNING COEFFICIENT | A coefficient in the Manning equation that represents resistance to flow caused by the physical and hydraulic properties of a stream channel. | 1070 |
| MASS FLOW RATE | The rate the mass of a fluid substance that passes a specified unit area in a unit amount of time. | 5694 |
| MASS FLUX | The measure of the flow of a quantity of mass per unit area per unit time. | 5695 |
| MASS FRACTION | 5699 | |
| MASS LOADING | The mass of uranium per fuel assembly or container. | 1417 |
| MASS REFLUX RATE | The rate at which liquid water is turned to vapor, and then recondenses as a liquid, measured as mass per unit time. | 7136 |
| MATERIAL DAMPING RATIO | Material Damping Ratio (D) is the ratio of the energy dissapated to the energy input during one cycle of loading, computed on the basis of the area contained within the hysteresis loop, and the equivalent secant modulus. | 6761 |
| MATRIX DIFFUSION RATE | THE MASS TRANSFER RATE OF A MATERIAL DIFFUSING ACROSS A UNIT AREA OF A POROUS MEDIUM ALONG A UNIT POTENTIAL GRADIENT IN A UNIT TIME. | 5603 |
| MATRIX LIQUID SATURATION | Volume of liquid divided by total matrix pore volume expressed as a fraction. | 7343 |
| MECHANICAL DEFORMATION | The amount of deformation of a sample due to the application of an external force, usually expressed in units of length. | 7206 |
| MECHANICAL STRESS | 1. An external force that acts on a material and tends to change the dimensions of the material, by compressing it, streching it, or causing it to shear. 2. A description of this effect, expressed as the force per unit area acting on a material surface element. 3. Corrosion studies, Strength of materials | 6502 |
| MEDIUM FLOW VELOCITY | Rate of change of fluid position within a medium in relation to time. | 5505 |
| MEMBRANE PLUS BENDING STRESS | The type of stress that includes the normal and bending stresses on a structural component. | 6922 |
| MERCURY ABUNDANCE | 1. The relative amount of mercury in a material, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of mercury in a material. 3. The ratio of mercury in a material. | 1655 |
| METALLIC SPENT FUEL | 5743 | |
| METALS DENSITY | 5617 | |
| METAMORPHIC ROCK LOCATION | Any rock derived from pre-existing rocks by mineralogical, chemical, and/or structural changes, essentially in the solid state, in response to marked changes in temperature, pressure, shearing stress, and chemical environment, generally at depth in the earth's crust. | 6432 |
| METEORITE IMPACT | Data from available literature supporting a probabilistic and consequence assessment of meteorite impact to be used for FEPs Screening. Data includes spatial relationships related to various cratering phenomena (e.g. cratering size and depth, exhumation, fracturing) and meteor characteristic and flux data (e.g. densities, velocities, and mass flux into the atmosphere). | 7266 |
| METHANE ABUNDANCE | 1. The relative amount of methane in a material, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of methane in a material. 3. The ratio of methane in a material. | 1800 |
| METHOXYCHLOR ABUNDANCE | 1. The relative amount of methoxychlor in a material, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of methoxychlor in a material. 3. The ratio of methoxychlor in a material. | 1801 |
| METHYLENE BLUE ACTIVE SUBSTANCES | 5807 | |
| METOLACHLOR ABUNDANCE | The relative amount of metolachlor present in a rock or fracture, commonly expressed as a relative volume, mass, or percent of occurrence. | 5780 |
| METRIBUZIN ABUNDANCE | The relative amount of metribuzin present in a rock or fracture, commonly expressed as a relative volume, mass, or percent of occurrence. | 5779 |
| MICA GROUP ABUNDANCE | The relative amount of mica present in a rock or fracture, commonly expressed as relative volume, mass, or percent of occurrence. | 4897 |
| MICROAUTORADIOGRAPHY | An image of a small radioactive subject produced by placing the subject clase to or in contact with a radiation-sensitive emulsion. | 5765 |
| MICROBIAL ABUNDANCE | Microscopic forms of life, expressed as a volume, mass, or percentage. | 6442 |
| MICROBIAL COMPOSITION | The average chemical composition of a microbial cell. | 6830 |
| MICROBIAL GROWTH MEDIUM | 6319 | |
| MICROBIAL GROWTH RATE | 6307 | |
| MICROBIAL VOLUME | The average volume of a microbial cell. | 6829 |
| MICROBIAL WATER CONTENT | The percent of water in an average microbial cell. | 6831 |
| MICROCLINE ABUNDANCE | Potassium feldspar mineral abundance, commonly expressed as a relative volume, mass, or percent of occurence. | 7345 |
| MICROORGANISM ABUNDANCE | The relative amount of a microorganism present in a material, commonly expressed as relative volume or mass. | 1602 |
| MICROORGANISM CHELATION FORMATION CONSTANT | The effectiveness of removal of individual radionuclide types from an aqueous solution by a baterial-produced chelating agent (a siderophore), that is, the amount in the siderophore divided by the amount remaining in solution. | 671 |
| MICROORGANISM TYPES | The genus and species of microorganisms. | 714 |
| MINE LOCATION | The geographic location of a natural resource mine. | 6772 |
| MINERAL AGE | The numerical age of a mineral usually determined by radiometric methods and expressed in years or multiples thereof. The age may reflect the original time of formation of the mineral or a later time when the contained isotopic system was thermally or chemically disturbed. | 53 |
| MINERAL ALTERATION RATE | The rate of change in the chemical or mineralogical composition of a mineral or rock where such change is caused by natural processes such as weathering or metamorphism. | 308 |
| MINERAL CRYSTALLINITY | The proportion of rock containing crystalline versus non-crystalline material. | 214 |
| MINERAL CRYSTALLOGRAPHY | The physical characteristics of mineral crystals, including their growth, structure, physical properties, and classification by form. | 1125 |
| MINERAL DEHYDRATION | The removal of water from a mineral. | 1123 |
| MINERAL DOMAIN | Discrete domains of mineral concentrations determined from ALS Elemental Map produced by XRF microprobe analysis of a sample thin section. | 6860 |
| MINERAL EPIGENESIS | A change in the mineral character of a rock as a result of external influences operating at or near the earth's surface. | 306 |
| MINERAL EVOLUTION | The development of a mineral to its present character from the environmental conditions to which it has been exposed through the passage of time. | 304 |
| MINERAL FORMATION TEMPERATURE | The temperature at which a mineral species forms. | 309 |
| MINERAL MORPHOLOGY | The external structure, form, and arrangements of minerals. | 213 |
| MINERAL OPTICAL ABSORPTION WAVELENGTH | The absorption band exibited by a mineral interacting with light waves in the visible, infrared, and ultraviolet regions of the electromagnetic spectrum. | 223 |
| MINERAL OPTICAL REFLECTION WAVELENGTH | The reflection band exhibited by a mineral interacting with light waves in the visible, infrared, and ultraviolet regions of the electromagnetic spectrum. | 224 |
| MINERAL PARAGENESIS | The general sequential order of crystallization and deposition of associated minerals or mineral assemblages in a rock, fracture, or ore body. | 312 |
| MINERAL STABILITY | The property or ability to retain it's composition and/or crystalline structure under the influence of environmental factors, such as temperature, pressure, the presence of water and other chemical species, etc. | 6609 |
| MINERAL TEXTURE | The general appearance or character of a mineral surface, including the combined effect of macroscopic and microscopic surface features such as crystallinity, grain size, shape, and relationship. | 218 |
| MINERALOGIC ALTERATION | Change in the chemical or mineralogic composition of a mineral or rock due to natural or experimental processes. | 753 |
| MINING DISTRICT LOCATION | The geographic location of a mining district. | 6773 |
| MIREX ABUNDANCE | The relative amount of mirex present in a rock or fracture, commonly expressed as a relative volume, mass, or percent of occurrence. Commenly used as an insecticide. It is descriped as a white crystalline, odourless solid. | 5678 |
| MIXING HEIGHT | 1. The distance above the Earth's surface to the top of a layer in which material can readily be dispersed due to convective or mechanical turbulence; this top is often marked by the base of an elevated temperature inversion. 2. The height of the atmospheric boundary layer near ground surface into which C-14 emanates from the ground and is uniformly mixed in the outdoor air. | 6734 |
| MODULUS OF DEFORMATION | The modulus of elasticity of materials not having elastic proportionality. | 77 |
| MODULUS OF RUPTURE | The tensile stress at failure of a member subjected to flexural (bending) loads. | 1510 |
| MOGANITE ABUNDANCE | The relative amount of moganite present in a rock or fracture commonly expressed as relative volume, mass, or percent of occurence. | 6682 |
| MOLAR VOLUME | The volume of one mole of a substance. | 6496 |
| MOLE OR WEIGHT FRACTION | A quantity that varies between 0 and 1, and that describes for a mole, or the molar weight, of a particular phase, the molar fraction/molar weight fraction per element. | 7308 |
| MOLYBDENUM ABUNDANCE | 1. The relative amount of molybdenum in a material, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of molybdenum in a material. 3. The ratio of molybdenum in a material. | 1656 |
| MOLYBDENUM RELEASE | 1. The relative amount of molybdenum released into a medium, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of molybdenum released into a medium. An element with an atomic weight of 95.94, a melting point of 2617 degrees Celsius, and a boiling point of 5560 degrees Celsius; highly conductive and resistant to heat. | 5639 |
| MOLYBDENUM-97 ISOTOPIC ABUNDANCE | 1. The relative amount of isotopic molybdenum-97 in a material, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of isotopic molybdenum-97 in a material. 3. The ratio of isotopic molybdenum-97 in a material. | 6462 |
| MONAZITE | (Ce, La, Nd, Th)PO4; a yellow, red-brown, yellow-brown, green, or white monoclinic mineral of the monazite group, occurring as tabular crystals, having a specific gravity of 4.6 to 5.4 and a hardness of 5 to 5.5 on the Mohs scale; found as a detrital mineral in veins, metamorphic rocks, and pegmatites; a principal ore of the rare earths and Thorium. | 6155 |
| MONAZITE ABUNDANCE | The relative amount of monazite present in a rock or fracture, commonly expressed as a relative volume, mass, or percent of occurrence. | 6260 |
| MONOCHLOROBENZENE | 6056 | |
| MONTMORILLONITE | (Na, Ca)0.3(Al, Mg)2Si4O10(OH)2-nH2O; a white, yellowish, or greenish monoclinic mineral of the smectite group; very fine-grained and claylike in habit, having a specific gravity of 2 to 3 and a hardness of 1 to 2 on the Mohs scale; occurs as the major component of bentonite clay deposits and also in soils, sedimentary and metamorphic rocks, and some mineral deposits. | 6157 |
| MORDENITE ABUNDANCE | The relative amount of Mordenite present in a rock or fracture, commonly expressed as relative volume, mass, or percent of occurrence. | 6057 |
| MUSCOVITE ABUNDANCE | The relative amount of muscovite present in a rock or fracture, commonly expressed as a relative volume, mass, or percent of occurrence. A colorless, gray, green, red, or light-brown pseudohexagonal, monoclinic mineral of the mica group, occuring as lamellar masses and disseminated scales, having a specific gravity of 2.7 to 3.1 and a hardness of 2 to 2.5 on the Mohs scale; found in granites and pegmatites. | 5735 |
| MVIEW VISUALIZATION | 6334 | |
| PARAMETER LIST | ||
| PARAMETER NAME | DEFINITION | PARAMETER KEY |
| N-BUTYLBENZENE ABUNDANCE | 1. The relative amount of n-butylbenzene in a material, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of n-butylbenzene in a material. 3. The ratio of n-butylbenzene in a material. | 1804 |
| N-BUTYLBENZYLPHTHALATE ABUNDANCE | The relative amount of n-butylbenzylphthalate present in a rock or fracture, commonly expressed as a relative volume, mass, or percent of occurrence. | 5665 |
| N-NITROSODI-N-PROPYLAMINE ABUNDANCE | 1. The relative amount of n-nitrosodi-n-propylamine in a material, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of n-nitrosodi-n-propylamine in a material. 3. The ratio of n-nitrosodi-n-propylamine in a material. | 1805 |
| N-NITROSODIMETHYLAMINE ABUNDANCE | The relative amount of n-nitrosodimethylamine present in a rock or fracture, commonly expressed as a relative volume, mass, or percent of occurrence. | 5682 |
| N-NITROSODIPHENYLAMINE ABUNDANCE | 1. The relative amount of n-nitrosodiphenylamine in a material, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of n-nitrosodiphenylamine in a material. 3. The ratio of n-nitrosodiphenylamine in a material. | 1807 |
| N-PROPYLBENZENE | 6112 | |
| N-PROPYLBENZENE ABUNDANCE | Normal-Propyl benzene is a colorless liquid soluble in alcohol and ether; sparingly soluble in water, used as a solbent and in dyeing textiles, aka - Phenyl propane. | 5530 |
| NA BOLTWOODITE ABUNDANCE | 1. The relative amount of NA boltwoodite in a material, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of NA boltwoodite in a material. 3. The ratio of NA boltwoodite in a material. | 6467 |
| NAPHTHALENE ABUNDANCE | The relative amount of naphthalene present in a rock or fracture or material, commonly expressed as a relative volume, mass, or percent of occurence. A white, volatile, monoclinic or platelike solid having a strong coal-tar odor, insoluble in water and soluble in alcohol, ether, and benzene; melts at 80.55 degrees Celsius and boils at 218 degrees Celsius. | 5671 |
| NATIONAL TRANSPORTATION - ENVIRONMENTAL BASELINE FILE | A Draft Environmental Impact Statement Supporting Documents category that documents current conditions so that changes can be identified which encompasses but are not limited to information regarding shipping container capacities, Spent Nuclear Fuel (SNF) rail and truck shipments, SNF characteristics, and population information. | 7057 |
| NATURAL RESOURCE ABUNDANCE | The estimated abundance of elements and minerals in a region. (Should not be used as a parameter for an input to the Site & Engineering Properties Database.) | 6766 |
| NATURAL RESOURCE AMOUNT | The estimated number of tons (metric tons preferred) of mineral deposits in a region, including those presently recoverable, those recoverable in the future, and those not yet discovered, which have or may have economic value. | 351 |
| NATURAL RESOURCE DEPTH | A measurement of the distance below the surface at which the top of a particular mineral resource, known or potential, occurs or is believed to occur. | 340 |
| NATURAL RESOURCE GRADE | The rating, based on recoverable amount of ore, of the mineral deposits of a region, including those presently recoverable, those recoverable in the future, and those not yet discovered. | 350 |
| NATURAL RESOURCE LOCATION | The geographic location of a particular known or potential mineral resource. | 345 |
| NEAR-FIELD GEOCHEMICAL ENVIRONMENT MODEL | The near-field geochemical environment (NFGE) model affects and is affected by all of the other processes (and associated models) within the engineering barrier system (EBS), including the coupling to thermohydrologic processes. | 5731 |
| NEODYMIUM ABUNDANCE | 1. The relative amount of neodymium in a material, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of neodymium in a material. 3. The ratio of neodymium in a material. | 1657 |
| NEODYMIUM OXIDE ABUNDANCE | 1. The relative amount of Neodymium Oxide in a material, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of Neodymium Oxide in a material. 3. The ratio of Neodymium Oxide in a material. | 6381 |
| NEODYMIUM-143/NEODYMIUM-144 ISOTOPIC RATIO | The amount of neodymium-143/neodymium-144 in a material commonly expressed as weight per unit sample weight (e.g. parts per million) or as an abundance relative to another isotope of the same element (atom ratio). | 2973 |
| NEPTUNIUM ABUNDANCE | 1. The relative amount of neptunium in a material, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of neptunium in a material. 3. The ratio of neptunium in a material. A radioactive element with an atomic weight of 237.048; and a melting point of 640 degrees Celsius; a silvery-white metal found naturally in traces, with weighable amounts produced as a by-product in plutonium production; isotope 237 of neptunium is used in neutron detection instruments. | 5766 |
| NEPTUNIUM CONCENTRATION | Neptunium concentration--expressed as C/Co, is the measured effluent concentration of Neptunium divided by the initial tracer concentration. For Steady State concentrations, Steady State is the condition where measurable changes in concentrations are not occurring over practical experimental times. | 6657 |
| NEPTUNIUM DESORPTION DISTRIBUTION COEFFICIENT | The measured Kd (mL/g) of neptunium on a material after desorption. | 7155 |
| NEPTUNIUM DIFFUSION | Neptunium retardation, expressed as the total quantity of neptunium diffused through a solid matrix after a time (Qt). | 6687 |
| NEPTUNIUM DIFFUSION COEFFICIENT | Neptunium diffusion coefficients (dif.coef.) in geologic medium are measured by tracer half-cell diffusion methods, which monitor the transient diffusion front of a tracer species through the material of interest. The difference between the dif.coef. for a tracer in the solution phase (Ds) and the dif.coef. obtained through the tuff pours D is given by the equation:D=(d/t^2)(Ds); where d=constrictivity, (Ds) is one variable (s is subscript), and t=tortuosity of the tuff pore structure. | 6711 |
| NEPTUNIUM OXIDE ABUNDANCE | 1. The relative amount of Neptunium Oxide in a material, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of Neptunium Oxide in a material. 3. The ratio of Neptunium Oxide in a material. | 6383 |
| NEPTUNIUM RELEASE | 1. The relative amount of neptunium released into a medium, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of neptunium released into a medium. A radioactive element with an atomic weight of 237.048, and a melting point of 640 degrees Celsius, a silvery-white metal found naturally in traces, with weighable amounts produced as a by-product of plutonium production. | 5644 |
| NEPTUNIUM SORPTION | A general term for the various processes by which Neptunium binds to another substance, especially the process of absorption (taking in the other substance completely) or adsorption (holding the other substance on the surface). | 6164 |
| NEPTUNIUM SORPTION DISTRIBUTION COEFFICIENT | The ratio for the various processes by which Neptunium bind and distributes itself between other substances. | 6985 |
| NEPTUNIUM-237 ISOTOPIC ABUNDANCE | 1. The relative amount of isotopic neptunium-237 in a material, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of isotopic neptunium-237 in a material. 3. The ratio of isotopic neptunium-237 in a material. | 6239 |
| NEPTUNIUM-237/URANIUM-238 ISOTOPIC RATIO | The amount of Neptunium-237/Uranium-238 in a material, commonly expressed as weight per unit sample weight (e.g. parts per million) or as an abundance relative to another isotope of a different element (atom ratio). | 7093 |
| NET INFILTRATION | Net infiltration is the flow of water downward below the zone of evapotranspiration. | 6715 |
| NEU POROSITY | Porosity measured by Neutron Porosity Log. | 6806 |
| NEUTRON COUNTS | 1. A count of the number of neutrons passing through a region of interest. 2. The number of neutrons detected by a neutron probe over a defined time period | 6244 |
| NICKEL ABUNDANCE | 1. The relative amount of nickel in a material, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of nickel in a material. 3. The ratio of nickel in a material. | 1660 |
| NICKEL OXIDE ABUNDANCE | 1. The relative amount of Nickel Oxide in a material, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of Nickel Oxide in a material. 3. The ratio of Nickel Oxide in a material. | 6382 |
| NICKEL RELEASE | 1. The relative amount of nickel released into a medium, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of nickel released into a medium. | 6248 |
| NICKEL SORPTION DISTRIBUTION COEFFICIENT | The ratio for the various processes by which Nickel binds and distributes itself between other substances. | 6584 |
| NIOBIUM ABUNDANCE | 1. The relative amount of niobium in a material, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of niobium in a material. 3. The ratio of niobium in a material. | 1661 |
| NIOBIUM RELEASE | 1. The relative amount of niobium released into a medium, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of niobium released into a medium. | 6252 |
| NIOBIUM SORPTION DISTRIBUTION COEFFICIENT | The ratio for the various processes by which Niobium binds and distributes itself between other substances. | 6583 |
| NITRATE ABUNDANCE | 1. The relative amount of nitrate in a material, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of nitrate in a material. 3. The ratio of nitrate in a material. | 1809 |
| NITRIC OXIDE ABUNDANCE | The relative amount of Nitric Oxide in a material, commonly expressed as a relative volume or mass. | 7085 |
| NITRITE ABUNDANCE | 1. The relative amount of Nitrite in a material, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of Nitrite in a material. 3. The ratio of Nitrite in a material. | 6396 |
| NITROBENZENE ABUNDANCE | greenish-yellow crystals or a yellow, oily liquid; slightly soluble in water and ether, used in processing cellulose and in the manufacture of aniline benzidine, and other compounds. | 5556 |
| NITROGEN ABUNDANCE | A gaseous element having the symbol N. Abundance - the amount of each constituent of the isotopic composition of an element. | 5606 |
| NITROGEN DIOXIDE ABUNDANCE | 1. The relative amount of nitrogen dioxide in a material, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of nitrogen dioxide in a material. 3. The ratio of nitrogen dioxide in a material. | 1814 |
| NITROGEN OXIDES ABUNDANCE | 1. The relative amount of nitrogen oxides in a material, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of nitrogen oxides in a material. 3. The ratio of nitrogen oxides in a material. | 1815 |
| NITROGEN, AMMONIA + ORGANIC DISSOLVED | 1. The relative amount of nitrogen in a material, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of nitrogen in a material. 3. The ratio of nitrogen in a material. | 1667 |
| NITROGEN, AMMONIA DISSOLVED | 1. The relative amount of nitrogen in a material, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of nitrogen in a material. 3. The ratio of nitrogen in a material. | 1666 |
| NITROGEN, NITRATE DISSOLVED | 1. The relative amount of nitrogen in a material, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of nitrogen in a material. 3. The ratio of nitrogen in a material. | 1663 |
| NITROGEN, NITRITE DISSOLVED | 1. The relative amount of nitrogen in a material, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of nitrogen in a material. 3. The ratio of nitrogen in a material. | 1664 |
| NO3-REDUCING BACTERIA | 6188 | |
| NORMAL STRESS | The stress component normal to a given plane. | 7340 |
| NORMAL STRESS ADJACENT TO DIKE | Stress normal to a given reference plane. | 7299 |
| NORMALIZED SHEAR MODULUS | The ratio of the determined shear modulus to the maximum shear modulus (G/Gmax). | 6763 |
| NORMATIVE ALKALI FELDSPAR COMPOSITION | A theoretical composition of alkali feldspar calculated from the chemical analysis of a rock or relevant portion of a rock. The normative feldspar compositions do not necessarily correspond to the composition(s) of actual alkali feldspar(s) in the analyzed rock, but are used for comparative purposes. The compositions are expressed as proportions. | 6573 |
| NORTHERN BOUNDARY OF ALLUVIUM | Notherly extent of the Alluvium in the SZ site-scale flow and transport model. | 6992 |
| NPHI POROSITY | Porosity measured by Thermal Neutron Porosity Log. | 6807 |
| NUCLEAR FACILITY LOCATION | The geographic location of a nuclear facility. | 6549 |
| NUCLEAR WEAPONS TEST LOCATIONS | The geographic location of nuclear weapons tests. | 275 |
| NUCLEAR WEAPONS TEST YIELD | The energy released in the (testing) detonation of a nuclear device, measured in terms of the kilotons or megatons of TNT required to produce the same energy release. | 274 |
| NUMBER OF JOINT SETS | The number of joint sets identified based on clustering of the data from joint normal vectors plotted on stereonets. | 7054 |
| NUMBER OF PACKAGES HIT FOR GROUNDWATER INTRUSION | The number of packages that are hit by an igneous dike for the groundwater intrusion enhanced source model. | 7017 |
| NUMBER OF VENTS IN REPOSITORY | 6469 | |
| NUMBER OF VENTS PER DIKE | Quantity of vents occurring along the dike trend. | 6837 |
| NUMBER OF WASTE PACKAGES HIT PER DRIFT | The number of waste packages that are intersected by an igneous dike per drift. | 7014 |
| NYE COUNTY NUCLEAR WASTE RESPOSITORY PROJECT OFFICE (NWRPO) | Technical data that have been collected by the NWRPO under the following program elements: 1. Early Warning Drilling Program (EWDP); and 2. Independent Scientific Investigation Program (ISIP). Further details on these data and the programs from which they were collected under may be found at www.nyecounty.com. | 7318 |
| PARAMETER LIST | ||
| PARAMETER NAME | DEFINITION | PARAMETER KEY |
| O-CHLOROPHENOL ABUNDANCE | The relative amount of o-chlorophenol present in a rock or fracture, commonly expressed as a relative volume, mass, or percent of occurrence. | 5795 |
| O-CHLOROTOLUENE ABUNDANCE | ortho-Chlorotoluene. A toxic, colorless liquid slightly soluble in water and miscible with alcohol; used as a solvent and intermediate. | 5515 |
| O-NITROPHENOL ABUNDANCE | ortho-nitrophenol yellow crystals soluble in hot water and alcohol. Used as an intermediate in organic synthesis. | 5557 |
| OBSERVED MINERAL ABUNDANCE | The mineralogy of rock sample material qualified by field observations and/or quantified by laboratory methods, frequently expressed as a weight percentage of the rock sample. | 6136 |
| OPAL ANALYSIS | The geochemistry of opal, expressed as the weight percent of various oxides. | 6536 |
| OPAL-A ABUNDANCE | An amorphous opal, meaning opal without crgystal structure. Opal-A is of jem quality material. | 6349 |
| OPAL-CT ABUNDANCE | The relative amount of opal-ct present in a rock or fracture, commonly expressed as relative volume, mass, or percent of occurrence. | 4979 |
| OPAL-CT/CRISTOBALITE ABUNDANCE | The relative amount of Opal-CT/Cristobalite present in a rock or fracture, commonly expressed as relative volume, mass, or percent of occurrence. | 6370 |
| OPAQUE OXIDES ABUNDANCES | The relative amount of material impervious to radiant energy (X-ray) other than visible light. | 6421 |
| OPTICAL PHOTOMICROGRAPH | Magnified image produced in either transmitted or reflected light using a photographically equipped optical microscope. | 7092 |
| ORGANIC CARBON | The quantity of organic carbon contained in a measured sample; often used as an indicator of the amount of organic pollution in a water sample. | 5704 |
| ORGANIC MATTER | The percent organic matter in a soil. | 6614 |
| ORGANIC NITROGEN | 5805 | |
| ORIENTATION OF STRESS PLANE | Orientation of a reference plane for normal and shear stress calculations. | 7301 |
| ORPHAN WASTE | DOE waste with no path forward to disposal. | 6672 |
| ORTHO PHOSPHORUS ABUNDANCE | The relative amount of ortho phosphorus present in a rock or fracture, commonly expressed as a relative volume, mass, or percent of occurrence. | 5719 |
| ORTHOCLASE ABUNDANCE | The relative amount of Orthoclase present in a rock or fracture, commonly expressed as relative volume, mass, or percent of occurrence. | 6371 |
| ORTHOPHOSPHATE ABUNDANCE | The relative amount of orthophosphate present in a rock, fracture filling, or water, commonly expressed as a relative volume, mass, or percent of occurrence. | 5798 |
| ORTHOPYROXENE ABUNDANCE | The relative amount of orthopyroxene present in a rock or fracture, commonly expressed as a relative volume, mass, or percent of occurrence. | 6153 |
| ORTHOSILICATE ABUNDANCE | A salt of the hypothetical orthosilicic acid. | 6399 |
| OXALATE ABUNDANCE | 1) The oxalate anionic species (2-), expressed as a weight percentage of the sampled material. 2) The relative amount of oxalate anionic species (2-) in a material, commonly expressed as a relative volume or mass. 3) Concentration of mass per unit volume of oxalate anionic species (2-) in a material. 4) The ratio of oxalate anionic species (2-) in a material. | 6732 |
| OXIDATION POTENTIAL | 1. The difference in the amount of energy contained in an atom or an ion and the amount of energy remaining once an electron leaves its orbit. 2. The energy that can be generated by an electrode when all the substances involved in the electrolytic process are in their standard states. | 6275 |
| OXIDATION RATE | 6317 | |
| OXIDATION RESPONSE | 6340 | |
| OXIDE | 1. An oxygen containing material that forms on metal surfaces; 2. Binary chemical compound in which oxygen is combined with a metal (such as Na2O; basic) or nonmetal (such as NO2; acidic). | 7287 |
| OXYGEN ABUNDANCE | 1. The relative amount of oxygen in a material, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of oxygen in a material. 3. The ratio of oxygen in a material. 4. As Dissolved Oxygen: The amount of oxygenated water, or oxygen in soultion, expressed as units per volume of solution. | 1670 |
| OXYGEN-18 ISOTOPIC ABUNDANCE | The relative amount of oxygen-18 in a material. | 6698 |
| OZONE ABUNDANCE | The relative amount of Ozone in a material, commonly expressed as a relative volume or mass. | 7086 |
| PARAMETER LIST | ||
| PARAMETER NAME | DEFINITION | PARAMETER KEY |
| P-CHLOROTOLUENE ABUNDANCE | para-Chlorotoluene. A toxic, colorless liquid slightly soluble in water and miscible with alcohol; used as a solvent and intermediate. | 5516 |
| P-CYMENE ABUNDANCE | para-Cymene; the isomer of a hydrocarbon that consists of a benzene ring with a methyl group and an isopropyl group attached to opposite sides of the ring. | 5517 |
| P-NITROPHENOL ABUNDANCE | para-Nitrophenol | 5558 |
| PALEOFLOOD AGE | The relative or absolute period of time during which a paleoflood occurred. | 208 |
| PALEOFLOOD FREQUENCY | The average number of ancient flooding events or cycles of a given magnitude, per unit time, in which streams overflowed their banks as they existed during the geological time period of concern. | 211 |
| PALEOFLOOD LOCATION | The geographic location of paleofloods. | 212 |
| PALEOFLOOD MAGNITUDE | The estimated discharge (volume per unit time) of an ancient stream during a geologically identified, ancient flood event. | 210 |
| PALLADIUM ABUNDANCE | 1. The relative amount of Palladium in a material, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of Palladium in a material. 3. The ratio of Palladium in a material. | 6361 |
| PALLADIUM SORPTION DISTRIBUTION COEFFICIENT | The ratio for the various processes by which Palladium binds and distributes itself between other substances. | 6586 |
| PALLADIUM-105 ISOTOPIC ABUNDANCE | 1. The relative amount of isotopic palladium-105 in a material, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of palladium-105 in a material. 3. The ratio of palladium-105 in a material. | 6464 |
| PALYGORSKITE ABUNDANCE | The relative amount of palygorskite present in a rock or fracture, commonly expressed as a relative volume, mass, or percent of occurrence. | 6510 |
| PAN EVAPORATION LOSS | Water level decrease in a container, due to evaporation. | 7185 |
| PARACHLOROMETACRESOL ABUNDANCE | The relative amount of parachlorometacresol present in a rock or fracture, commonly expressed as a relative volume, mass, or percent of occurrence. | 5666 |
| PARENT MATERIAL | Unconsolidated mineral or organic matter from which a true soil develops. | 130 |
| PARTIAL PRESSURE | The pressure of an individual gas that contributes to the total pressure of a gas mixture. | 1505 |
| PARTICLE CHARACTERISTICS | The amount of grains or particles per volume of material, or other textural characteristics. | 1078 |
| PARTICLE DENSITY | The mass of solid rock material divided by the volume of the solids, usually determined on crushed rock "grains", i.e., grain mass divided by grain volume, not including mass and volume of matrix, cement, or pore space. | 61 |
| PARTICLE FLUX | The measure of the flow of some quantity of particles per unit area per unit time. | 1563 |
| PARTICLE SHAPE | The spatial or geometric form of the particles in a sediment or rock; a fundamental property of a particle that determines the relation between its mass and surface area. | 1107 |
| PARTICLE SIZE | The general dimensions of particles or mineral grains in a sediment of rock or material, assuming that the particles are spheres for the purposes of measurements. | 119 |
| PARTICLE SIZE DISTRIBUTION | 1. A particle size distribution curve is constructed by comparing the material collected by size to the total weight of material. A curve that shows particle size versus cumulative weight by percent. 2. The percentages by weight or number of each fraction into which a sample has been classified with respect to sieve number or particle size. 3. The amounts of various soil separates in a soil sample determined by weight percentages. | 6983 |
| PARTICLE VELOCITY | The velocity of an in situ particle of a solid as it responds to a dynamic force caused by a seismic or blasting event. | 1542 |
| PAVEMENT LOCATION | The geographic location of a pavement study area. | 6746 |
| PCB ABUNDANCE | Polychlorinated biphenyl; any of a group of toxic chlorinated aromatic hydrocarbons used in a variety of commercial applications, including paints, inks, adhesives, electrical condensers, batteries, and lubricants. | 5559 |
| PCNB ABUNDANCE | Pentachloronitrobenzene; off white crystal, insoluble in water and soluble in alcohol, used as a fungicide, herbicide, bactericide, and algicide. | 5560 |
| PEAK GROUND ACCELERATION | Maximum ground acceleration caused by seismic waves for various annual exceedance probabilities. | 6910 |
| PEAK GROUND VELOCITY | Maximum ground vibration caused by seismic waves for various annual exceedance probabilities. | 6911 |
| PEAK SHEARING STRAIN | The maximum strain (displacement divided by original distance) causing the deformation of a solid body in which a plane in the body is displaced parallel to itself. | 6762 |
| PEDIMENT MORPHOMETRY | The geometric characteristcs of pediments, which are broad, gently sloping erosion surfaces at the base of receding mountain fronts, often partly mantled with a thin veneer of alluvium derived from the adjacent mountain masses. | 329 |
| PENTACHLOROPHENOL ABUNDANCE | 1. The relative amount of pentachlorophenol in a material, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of pentachlorophenol in a material. 3. The ratio of pentachlorophenol in a material. | 1822 |
| PENTAFLUOROBENZOATE | 6133 | |
| PENTAFLUOROBENZOIC ACID CONCENTRATION (PFBA) | C7HF5O2, concentration of mass per unit volume of PFBA in a material. | 6878 |
| PERCENT FRACTION | 1) Area: The area of intercepted features per unit test area (usually expressed as a percentage). 2) Volume: The volume of features per unit test volume (usually expressed as a percentage). | 7265 |
| PERCENT HEAT REMOVAL | The percent of input heat removed from a cooling cap heat sink. | 7137 |
| PERCENT OF HIT PACKAGES THAT FAIL | The percentage of waste packages that fail when directly in contact with an igneous intrusion. | 7015 |
| PERCHED WATER LOCATION | The three-dimensional location of unconfined ground water separated from an underlying main body of ground water by an unsaturated zone. | 358 |
| PERCHED WATER VOLUME | Volume of perched water in specific locations of the unsaturated zone (cubic meters). | 7349 |
| PERCOLATION | The movement of water, under hydrostatic pressure or by the force gravity, through the interstices in rock, soil, or other porous material in the unsaturated zone. | 1515 |
| PERCOLATION FLUX | The measurement of the flow of a liquid through a poros medium per unit area per unit time. | 6333 |
| PERMEABILITY | An intrinsic property of a porous medium that measures the ability of the medium to transmit fluid independently of the properties of the fluid; calculated by multiplying the measured hydraulic conductivity or the pneumatic conductivity by the ratio of the dynamic viscosity of the fluid to the product of the fluid density and the value of the gravitational acceleration at the earth's surface. | 1115 |
| PERMEABILITY CHANGE RATIO | Dimensionless ratio of pre-excavation over post-excavation air permeability measurements. | 7163 |
| PERRIERITE ABUNDANCE | The relative amount of perrierite present in a rock or fracture, commonly expressed as a relative volume, mass, or percent of occurrence. | 6263 |
| PERTHANE ABUNDANCE | The relative amount of perthane present in a rock or fracture, commonly expressed as a relative volume, mass, or percent of occurrence. | 5679 |
| PETROGRAPHIC ANALYSES | The description and systematic classification of rocks, using standard point counts employing transmitted and/or reflected light microscopic techniques to determine volume percents of the matrices in the sample. | 6695 |
| PH | The negative log to the base 10 of the hydrogen ion activity in a solution. | 429 |
| PHASE FRACTION | A quantity that varies between 0 and 1 and is used to describe the amount of phase calculated or measured. The measurements and calculations lead to a volume fraction of phase, i.e., to a molar volume of product phase (or precipitate) occurring in a matrix phase. | 7309 |
| PHENANTHRENE ABUNDANCE | 1. The relative amount of phenanthrene in a material, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of phenanthrene in a material. 3. The ratio of phenanthrene in a material. | 1823 |
| PHENOL ABUNDANCE | 1. The relative amount of phenol in a material, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of phenol in a material. 3. The ratio of phenol in a material. | 1824 |
| PHOSPHATE ABUNDANCE | 1. The relative amount of Phosphate in a material, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of Phosphate in a material. 3. The ratio of Phosphate in a material. | 6302 |
| PHOSPHATE ION ABUNDANCE | 1. The relative amount of Phosphate Ion in a material, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of Phosphate Ion in a material. 3. The ratio of Phosphate Ion in a material. | 5806 |
| PHOSPHOLIPID FATTY-ACID (PLFA) (ESTER LINKED) | A measure of microbial biomass and community composition, expressed as a volume, mass or percentage. | 6443 |
| PHOSPHORIC ANHYDRIDE ABUNDANCE | The relative amount of phosphoric anhydride present in a rock or fracture or material, commonly expressed as a relative volume, mass, or percent of occurrence. A white powder, very deliquescent; melts at 580-585 degrees Celsius and sublimes at 300 degrees Celsius. It reacts violently with water to produce heat; a fire hazard and corrosive to skin; used as a surfactant and dehydrating agent. | 5707 |
| PHOSPHORUS ABUNDANCE | 1. The relative amount of phosphorus in a material, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of phosphorus in a material. 3. The ratio of phosphorus in a material. | 1672 |
| PHOSPHORUS OXIDE ABUNDANCE | The relative amount of phosphorus oxide present in a rock or fracture, commonly expressed as a relative volume, mass, or percent of occurrence. | 6013 |
| PHOTOSYNTHETICALLY ACTIVE RADIATION | Radiation in the 400 - 700 nm waveband. | 6632 |
| PHYLOGENETIC TREE | Depicts (reconstructs) the evolutionary (relatedness) relationship between species. | 7220 |
| PHYLOGENY | The evolutionary history of a species or a group of related species. Molecular similarities are used to infer the relationships of genes, and, by extension, to learn the relationships of the organisms themselves. | 7219 |
| PHYSICAL CHARACTERISTICS OF CEMENT GROUT | The qualities of cement grout that are directly related to it's material behavior, including but not limited to it's coefficient of Thermal Expansion, Compressive Strength, Density, Ductility, Emissivity, Mass, Poisson's Ratio, Porosity, Specific Heat, Tensile Strength, Thermal Diffusivity/Conductivity, Yield Strength, Young's Modulus, physical dimensions, etc. | 7114 |
| PHYSICAL CHARACTERISTICS OF EMPLACEMENT DRIFT INVERT MATERIA | The qualities of the material to be used in the emplace drift inverts that are directly related and establish its quality and performance, including but not limited to: bulk specific gravity, absorption, clay lumps and friable particles, degradation, soundness, and so forth. | 7132 |
| PHYSICAL CHARACTERISTICS OF GROUND SUPPORT MATERIALS | The qualities of Ground Support Materials that are directly related to it's material/physical behavior, including but not limited to: Coefficient of Thermal Expansion, Compressive Strength, Density, Ductility, Emissivity, Mass, Poisson's Ratio, Porosity, Specific Heat, Tensile Strength, Thermal Diffusivity/Conductivity, Yield Strength, Young's Modulus, physical dimensions, etc. Ground support materials include Steel Sets, Rock Bolts, Bearing Plates, and Welded Wire Fabric (WWF). | 7117 |
| PHYSICAL CHARACTERISTICS OF SPENT FUEL | The general physical aspects of spent fuel such as volume, mass, density, radioactivity, specific heat, thermal expansion, etc. | 7113 |
| PHYSICAL SOIL PROPERTIES | 5693 | |
| PIT LOCATIONS | The position (usually denoted by coordinates) of a place where an excavation area is or is to be. | 6140 |
| PITZER INTERACTION PARAMETER | Virial-type coefficients used in the formulations advanced by Pitzer (1979; TIC: 239527) to calculate activity coefficients of aqueous electrolyte solutions as a function of ionic strength and temperature. | 7217 |
| PLAGIOCLASE ABUNDANCE | The relative amount of plagioclase present in a rock or fracture, commonly expressed as a relative volume, mass, or percent of occurrence. | 6141 |
| PLANT BIOMASS | The dry weight of plant material. | 6650 |
| PLASTIC LIMIT | 1. The minimum amount of water mixed with given sediment or soil that enables the soil to be rolled into a thin thread, without breaking the thread. 2. The water content at which a soil that is being dried changes from a plastic to a solid state. | 70 |
| PLATINUM ABUNDANCE | 1. The relative amount of Platinum in a material, commonlyh expressed as a relative volume or mass. 2. Concentration of mass per unit volume of Platinum in a material. 3. The ratio of Platinum in a material. | 7121 |
| PLAYA LOCATION | The geographic location of a playa or dry lake bed. | 6737 |
| PLUME HEIGHT | The measurement of a line joining the apex of an ash cloud to a point on the ground surface that lies directly underneath the apex. | 6852 |
| PLUME VOLUME/UNIT | Volume of ash produced from volcanic eruption as measured in cubic meters per day. | 6853 |
| PLUTONIUM ABUNDANCE | 1. The relative amount of Plutonium in a material, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of Plutonium in a material. 3. The ratio of Plutonium in a material. 4. The amount of Plutonium isotopes present in the drift and/or the near-field underneath a breached waste package as the result of precipitation or other immobilizing mechanisms. | 6314 |
| PLUTONIUM CONCENTRATION | Plutonium concentration--expressed as C/Co, is the measured effluent concentration of Plutonium divided by the initial tracer concentration. For Steady State concentrations, Steady State is the condition where measurable changes in concentrations are not occurring over practical experimental times. | 6655 |
| PLUTONIUM DESORPTION | The amount of plutonium detached from a material after sorption, expressed as a percentage or volume. | 7008 |
| PLUTONIUM DESORPTION DISTRIBUTION COEFFICIENT | The measured Kd (mL/g) of plutonium on a material after desorption. | 7009 |
| PLUTONIUM OXIDE ABUNDANCE | 1. The relative amount of Plutonium Oxide in a material, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of Plutonium Oxide in a material. 3. The ratio of Plutonium Oxide in a material. | 6384 |
| PLUTONIUM RELEASE | 1. The relative amount of plutonium released into a medium, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of plutonium released into a medium. A radioactive metallic element with a melting point of 640 degrees Celsius, and a boiling point of 3230 degrees Celsius; it occurs as fifteen isotopes having mass numbers from 232 to 246. | 5643 |
| PLUTONIUM SORPTION | A general term for the various processes by which Plutonium binds to another substance, especially the process of absorption (taking in the other substance completely) or adsorption (holding the other substance on the surface). | 6163 |
| PLUTONIUM SORPTION COEFFICIENT ONTO COLLOIDS | Sorption coefficient onto reversible colloids for Plutonium sorption. | 7286 |
| PLUTONIUM SORPTION DISTRIBUTION COEFFICIENT | The ratio for the various processes by which Plutonium binds and distributes itself between other substances. | 7006 |
| PLUTONIUM-238 ISOTOPIC ABUNDANCE | 1. The relative amount of isotopic plutonium-238 in a material, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of isotopic plutonium-238 in a material. 3. The ratio of isotopic plutonium-238 in a material. | 6498 |
| PLUTONIUM-239 ISOTOPIC ABUNDANCE | 1. The relative amount of isotopic plutonium-239 in a material, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of isotopic plutonium-239 in a material. 3. The ratio of isotopic plutonium-239 in a material. | 6468 |
| PLUTONIUM-239/PLUTONIUM-240 ISOTOPIC RATIO | The initial amount of Plutonium-239/Plutonium-240 in a material commonly expressed as a weight per unit sample weight (e.g. parts per million) or as an abundance relative to another isotope of the same element (atom ratio). | 6236 |
| PLUTONIUM-239/URANIUM-238 ISOTOPIC RATIO | The amount of Plutonium-239/Uranium-238 in a material, commonly expressed as weight per unit sample weight (e.g. parts per million) or as an abundance relative to another isotope of a different element (atom ratio). | 7094 |
| PLUTONIUM-240 ISOTOPIC ABUNDANCE | 1. The relative amount of isotopic plutonium-240 in a material, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of isotopic plutonium-240 in a material. 3. The ratio of isotopic plutonium-240 in a material. | 6499 |
| PLUTONIUM-241 ISOTOPIC ABUNDANCE | 1. The relative amount of isotopic plutonium-241 in a material, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of isotopic plutonium-241 in a material. 3. The ratio of isotopic plutonium-241 in a material. | 6500 |
| PLUTONIUM-242 ISOTOPIC ABUNDANCE | 1. The relative amount of Isotopic Plutonium-242 in a material, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of Isotopic Plutonium-242 in a material. 3. The ratio of Isotopic Plutonium-242 in a material. | 6428 |
| PNEUMATIC CONDUCTIVITY | A measure of the ability of a material to pass gas through its connected pores; generally expressed as the volume of gas flow in a unit time through a cross section of unit area under a hydraulic gradient. | 220 |
| PNEUMATIC FLOWPATH | The path of the movement, or flow, of gas in a material. | 1331 |
| PNEUMATIC FLUX | The measure of the flow of pore_gas through a medium per unit area per unit time. | 1333 |
| PNEUMATIC POTENTIAL | Gas pressure (absolute) divided by the specific weight of the gas (See also GAS PRESSURE). | 420 |
| PNEUMATIC PRESSURE | The pressure exerted by a gas in all directions (See also GAS PRESSURE). | 1330 |
| POINT INTERCEPT COVER | A method of measuring ground cover that uses a theoretical vertical line drawn between the sky and a point on the ground. The line intercepts some form of ground cover (i.e. plant, rock, bare ground), which is recorded for each point. | 7211 |
| POISSON'S RATIO | 1. The absolute ratio of the transverse strain to the axial strain of a long speciman under an axial of unit elongation to unit lateral contraction. 2. In Hooke's Law for homogeneous isotropic materials, for a material subjected to a stress in some direction, the ratio of the strain in the transverse direction to the strain in the direction of stress application. | 82 |
| POLLEN ABUNDANCE | 1. The relative amount of Pollen in a material, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of Pollen in a material. 3. The ratio of Pollen in a material. | 6203 |
| POLYCHLORINATED NAPHTHALENE ABUNDANCE | 1. The relative amount of Polychlorinated Napthalene in a material, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of Polychlorinated Napthalenea in a material. 3. The ratio of Polychlorinated Napthalenea in a material. | 5687 |
| PONDING PROBABILITY | The measurement of the uncertainty associated with the natural formation of a pond in a stream whose normal streamflow has been interupted, the artificial containment of water in a stream to form a pond, or the accumulation of rainwater on a flat roof because of poor drainage. | 6353 |
| POPULATED AREAS | Incorporated cities, towns, and selected census-designated places in Nye, Clark, and Lincoln Counties, Nevada. | 810 |
| POPULATION | The total number of persons residing in the study area or within a specified political or geographic boundary. | 809 |
| POPULATION CENTER LOCATION | The geographic location of a population center such as a town or city. | 6555 |
| PORE SIZE | The general dimensions of pores, usually expressed as a frequency distribution. | 1516 |
| POROSITY | The ratio of the total amount of void space in a material (due to pores, small channels, and so on) to the bulk volume occupied by the material. | 68 |
| PORTAL LOCATION | The geographic location of a ramp portal pad. | 6674 |
| POTASSIUM ABUNDANCE | 1. The relative amount of potassium in a material, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of potassium in a material. 3. The ratio of potassium in a material. | 1677 |
| POTASSIUM GAMMA INTENSITY | The activity of gamma radiation given off by radioactive Potassium. | 7046 |
| POTASSIUM OXIDE ABUNDANCE | The relative amount of potassium oxide present in a rock or fracture or materail, commonly expressed as a relative volume, mass, or percent of occurence. A colorless cubic crystals; very soluble in water and alcohol; hygroscopic; decomposes at 350 degree Celsius; used as a reagent and intermediate. | 5633 |
| POTASSIUM-39 ISOTOPIC ABUNDANCE | The relative amount of isotopic Potassium-39 in a material commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of isotopic Potassium-39 in a material. 3. The ratio of isotopic Potassium-39 in a material. | 7100 |
| POTENTIOMETRIC SURFACE | 1. The position of the hydraulic head of a confined aquifer. 2. An imaginary surface that everywhere coincides with the static level of the water in the aquifer. | 1537 |
| POWER | Any type of physical energy produced from an electrical, water or mechanical potential. | 6524 |
| POWER SOURCE AND DISTRIBUTION LOCATION | The geographic location of power sources and the means by which power is distributed. | 6754 |
| PRAMITOL ABUNDANCE | The relative amount of pramitol present in a rock or fracture, commonly expressed as a relative volume, mass, or percent of occurrence. | 5771 |
| PRASEODYMIUM ABUNDANCE | 1. The relative amount of Praseodymium in a material, commonly expressed as a relative volume of mass. 2. Concentration of mass per unit volume of Praseodymium in a material. 3. The ratio of Praseodymium in a material. | 7122 |
| PRASEODYMIUM OXIDE ABUNDANCE | The relative amount of praseodymium oxide present in a rock or fracture, commonly expressed as a relative volume, mass or percent of occurance. | 6503 |
| PRECIPITATION DURATION | The length of time during which precipitation (rain, snow, hail, or sleet) occurs at a given observation location. | 547 |
| PRECIPITATION FREQUENCY | The number of times that prescipitation (rain, snow, hail or sleet) occurs within a specified interval at a specific location. | 1579 |
| PRECIPITATION GAUGE LOCATIONS | Specific site location of precipitation gauge. | 6450 |
| PRECIPITATION QUANTITY | The amount of moisture that falls to the ground as rain, snow, hail or sleet at a given location within a specific range of time, may be expressed as water equivalents for comparison. | 553 |
| PRECIPITATION RATE | The quantity of precipitation (rain, snow, hail, or sleet) that occurs over a unit area in a unit time. | 557 |
| PRECIPITATION TYPE | Any form of water particules, such as frozen water in snow or ice crystals, or liquid water in raindrops or drizzle, that falls from clouds in the atmosphere and reaches the earth's surface. | 794 |
| PRESSURE COEFFICIENT | A quantity given by the fractional change in the pressure of a gas sample divided by the fractional change in the temperature under specified conditions, such as constant volume (See also GAS PRESSURE). | 419 |
| PROBABILITY OF >0 CONDUITS | The probability that at least one eruptive center occurs for a volcanic event. | 7016 |
| PROBABLE MAXIMUM FLOOD MAGNITUDE | The maximum probable magnitude of a flood, usually with values expressed as cubic meter per second. Depicted in maps and spatial data products as its lateral extent. | 6966 |
| PROJECT IMMIGRANTS TO SOUTHERN NEVADA | The number of individuals employed by the Yucca Mountain Project or associated with those employees who relocate to Southern Nevada during a specified period. | 1040 |
| PROMETRYN ABUNDANCE | The relative amount of prometryn present in a rock or fracture, commonly expressed as a relative volume, mass, or percent of occurrence. Chemical used as a selective pre- and post-emergence herbicide. | 5769 |
| PROPACHLOR ABUNDANCE | The relative amount of propachlor present in a rock of fracture, commonly expressed as a relative volume, mass, or percent of occurrence. | 5790 |
| PROPAZINE ABUNDANCE | The relative amount of propazine present in a rock or fracture, commonly expressed as a relative volume, mass, or percent of occurrence. | 5774 |
| PROPORTION OF POPULATION | Fraction of a given population with certain behavioral characteristics. | 7257 |
| PROTACTINIUM SORPTION DISTRIBUTION COEFFICIENT | The ratio for the various processes by which Protactinium binds and distributes itself between other substances. | 6422 |
| PROTACTINIUM-231 ISOTOPIC ABUNDANCE | 1. The relative amount of isotopic protactinium-231 in a material, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of isotopic protactinium-231 in a material. 3. The ratio of isotopic protactinium-231 in a material. | 7326 |
| PROTACTINIUM-231/URANIUM-235 ISOTOPIC RATIO | The amount of Protactinium-231/Uranium-235 in a material commonly expressed as a weight per unit sample weight (e.g., parts per million) or as an abundance relative to another isotope of a different element (atom ratio) (radioactivity ratio). | 6918 |
| PROTEIN ABUNDANCE | 1. The relative amount of Protein in a material, commonly expressed as a relative volume or mass. 2. Concentration or mass per unit volume of Protein in a material. 3. The ratio of Protein in a material. | 6875 |
| PROVENANCE | The geographic origin of a transported deposit usually constrained by lithology. | 1591 |
| PSAT | Saturated Vapor Pressure of Bulk Aqueous Phase. | 7273 |
| PUBLIC LAND SURVEY SYSTEM LOCATION | The geographic location of Public Land Survey system Township and Range lines. | 6575 |
| PUMPED MASS | Total mass of water pumped from holding reservoir, before recovery from recirculation system | 7083 |
| PYRENE ABUNDANCE | The relative amount of pyrene present in a rock or fracture,commonly expressed as a relative volume, mass, or percent of occurrence. The abundance of the small stone of a drupe of similiar fruit. | 5672 |
| PYRITE ABUNDANCE | The relative amount of pyrite present in a rock or fracture, commonly expressed as a relative volume, mass, or percent of occurrence. A brass-yellow, opaque, metallic, cubic mineral of the pyrite group, dimorphous with marcasite, having a specific gravity of 5.00 to 5.02 and a hardness of 6 to 6.5 on the Mohs scale; occurs as cubes, octahedrons, and pyritohedrons, and in granular form; found in rocks of all types, the most abundant and widespread sulfide mineral. | 5713 |
| PYROLUSITE ABUNDANCE | The relative amount of pyrolusite present in a rock or fracture, commonly expressed as a relative volume, mass, or percent of occurrence. | 6511 |
| PYROXENE ABUNDANCE | The relative amount of pyroxene present in a rock or fracture, commonly expressed as relative volume, mass, or percent of occurrence. | 6626 |
| PARAMETER LIST | ||
| PARAMETER NAME | DEFINITION | PARAMETER KEY |
| QUANTITY OF DOE SPENT NUCLEAR FUEL | A measure of the values and weight (metric tons) of heavy metal waste mass (MTHM) and material associated with Spent Nuclear Fuel (SNF). | 6454 |
| QUARTER-WAVELENGTH AMPLIFICATION RATIO | The quarter-wavelength amplification ratio, A2/A1, is the ratio of the quarter-wavelength amplifications for two different velocity profiles (numbered 1 and 2), and is calculated (by neglecting the variation in density) as the square root of the ratio of vs1 to vs2, where vs1 and vs2 are the shear-wave velocities of profiles 1 and 2, respectively, at a given frequency. | 7199 |
| QUARTZ ABUNDANCE | The relative amount of quartz present in a rock or fracture, commonly expressed as relative volume, mass, or percent of occurrence. | 5116 |
| PARAMETER LIST | ||
| PARAMETER NAME | DEFINITION | PARAMETER KEY |
| RADAR VELOCITY | Velocity derived from ground penetrating radar testing. | 6785 |
| RADIAL STRESS | The stress in the radial direction (perpendicular to the hoop or circumferential direction) of a cylinder or a circular plate. The effect is to open cracks in the hoop direction in the cylinder or the circular plate. Related to stress intensity factor. | 7315 |
| RADIATION DOSE | The total amount of ionizing radiation absorbed by a body. | 6369 |
| RADIATION EFFECTS | Changes in properties of materials caused by radiation. | 6625 |
| RADIATION FLUX | A measure of the rate of radioactive decay per unit area at a specified location. | 1400 |
| RADIATION INTENSITY | The activity of radiation given off by radioactive elements. | 71 |
| RADIOGRAPHIC INSPECTION RELIABILITY FACTOR | Ratio of the initial number of flaws over the remaining number of flaws after all detected flaws from radiographic inspection have been repaired. | 7127 |
| RADIOLOGICAL MONITORING LOCATION | The location where radiological monitoring is conducted. | 7043 |
| RADIONUCLIDE CONCENTRATION | The concentration of radionuclides in a sample of other substance. | 1593 |
| RADIONUCLIDE INVENTORY | An itemized listing of isotopes that decay and emit radiation. | 6254 |
| RADIONUCLIDE INVENTORY, RAPID RELEASE FRACTION | That fraction of the total amount of radionuclides which is immediately released from the waste package when the container fails. | 629 |
| RADIONUCLIDE MOBILIZATION | The movement of a nuclide containing isotopes that decay and emit radiation. | 5741 |
| RADIONUCLIDE RELEASE | 6266 | |
| RADIONUCLIDE RELEASE RATE, FRACTIONAL | The fractional release of radionuclides from over a specified period of time, stated in terms of fraction of radionuclide per unit time. | 979 |
| RADIONUCLIDE TRANSLOCATION FACTOR | The fraction of radionuclide(s) deposited on leaf surfaces that reaches the edible part of plant. There are different translocation factors for different crops, (i.e., Leafy vegetables, Root vegetables, Fruit, Grain, etc. | 6886 |
| RADIONUCLIDE TRANSPORT | The movement of radionuclides primarily by water, from one point to another within the repository's engineered and natural barrier systems. Radionuclides may occur as dissolved aqueous species, in mobile solid phases (e.g., colloids), or as dissolved species sorbed onto mobile solid phases. | 7195 |
| RADIONUCLIDES | An unstable isotope which decays into other elements in a transition to a stable nuclear configuration. | 6641 |
| RADIUM ABUNDANCE | 1. The relative amount of radium in a material, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of radium in a material. 3. The ratio of radium in a material. | 5683 |
| RADIUM SORPTION DISTRIBUTION COEFFICIENT | The ratio for the various processes by which Radium binds and distributes itself between other substances. | 6587 |
| RADIUM-226 ISOTOPE | The amount of radium-226 in a material commonly expressed as weight per unit sample weight (e.g. parts per million) or as an abundance relative to another isotope of the same element (atom ratio). | 3342 |
| RADIUM-226/THORIUM-230 ISOTOPIC RATIO | The amount of Radium-226/Thorium-230 in a material commonly expressed as a weight per unit sample weight (e.g., parts per million) or as an abundance relative to another isotope of a different element (atom ratio) (radioactivity ratio). | 6919 |
| RADIUM-228 ISOTOPE | The amount of radium-228 in a material commonly expressed as weight per unit sample weight (e.g. parts per million) or as an abundance relative to another isotope of the same element (atom ratio). | 3344 |
| RADON CONCENTRATION | The activtity of radon gas, Rn-222, normally without its progeny, in a unit volume of air. Usually this is an hourly average value. | 7177 |
| RADON EMANATION RATE | The rate of release of radon. | 72 |
| RADON RELEASE FACTOR | The ratio of activity concentration of 222Rn in outdoor air to activity concentration of 226Ra in surface soil. | 7238 |
| RADON-222 ISOTOPE | The amount of radon-222 in a material commonly expressed as weight per unit sample weight (e.g. parts per million) or as an abundance relative to another isotope of the same element (atom ratio). | 3370 |
| RANCIEITE ABUNDANCE | The relative amount of rancieite present in a rock or fracture, commonly expressed as a relative volume, mass, or percent of occurrence. | 6276 |
| RATE OF INJECTION | The rate at which a liquid is injected into a porous medium. | 7062 |
| RATED ROCK QUALITY VALUE | 5648 | |
| RATIO (CONVERSION FACTOR) OF 222RN CONCENTRATION | The ratio of activity concentration of 222Rn in outdoor air to 222Rn flux density from soil. | 7239 |
| REACTANT FLUID FLUX | The measure of the flow of some quantity of a fluid participating in a chemical reaction per unit area per unit time. | 947 |
| REACTANT PHASE STATE AMOUNT | The amount of a substance, involved in a chemical reaction, in any one particular physical form, i.e., solid, liquid, or gas. | 114 |
| REACTANT SURFACE AREA | The amount of surface area of a reactant, measured in square units or in units of area per volume or area per mass, that participates in a chemical reaction. | 702 |
| REACTION ACTIVATION ENERGY | 5852 | |
| REACTION HYDRATION CYCLES | The measure of repeated reaction events in which water is incorporated into or removed from a substance. | 937 |
| REACTION PHASE TRANSFORMATION RATE | The rate of reaction phase transformations. | 717 |
| REACTION PRODUCTS | Chemical substances created by a chemical reaction. | 633 |
| REACTION RATE CONSTANTS | A value of the proportionality constant, k, relating the rate of a particular chemical reaction to some function of reactant concentration. | 630 |
| REACTION VOLUME | The standard molal volume of a given aqueous reaction at a specified temperature and pressure. | 625 |
| REACTIVE SITE DENSITY | Number of sites available for adsorption per nanometer area on iron(hydr)oxide colloids. | 7302 |
| RECIRCULATION RATE | The rate at which water from the production well discharge is cycled back into the tracer injection well. | 7147 |
| RECLAMATION | Studies and activities related to reclamation, revegetation, and soil stabilization of lands disturbed by activities associated with the Yucca Mountian Site Characterization Project. | 6419 |
| RECOVERY CURVE | The water level change in a well after the pump has been shut off. | 6694 |
| RED BLOOD CELL ABUNDANCE | 1. The relative amount of Red Blood Cells in a material, commonly expressed as a relative volume or mass. 2. Concentration or mass per unit volume of Red Blood Cells in a material. 3. The ratio of Red Blood Cells in a material. | 6873 |
| RELATIVE COMPACTION | The ratio, expressed as a percentage, of: (1) the dry unit weight of a soil, to (2) the maximum dry unit weight obtained in a laboratory compaction test. | 7201 |
| RELATIVE DENSITY | The ratio of: (1) the difference between the void ratio of a cohesionless soil in the loosest state and any given void ratio, to (2) the difference between its void ratios in the loosest and in the densest states. | 7181 |
| RELATIVE GRAVITY | The difference between a measurement of the force of gravity at the point of observation and the measurement at an established gravity station where the value is taken as standard. | 5747 |
| RELATIVE HUMIDITY | The ratio of the amount of water present in air to the amount required to saturate the air with water vapor at a specific temperature. | 542 |
| RELATIVE PERMEABILITY | 1. The ratio between the effective permeability of a given fluid at a partial saturation and the permeability at 100% saturation (the absolute permeability). The ratio of the magnetic permeability of a material to the permeability of free space. | 397 |
| RELATIVE PERMEABILITY FITTING PARAMETER | "Eta", exponent of effective saturation, equivalent to the "lambda" pore-connectivity parameter in equation for relative permeability developed by Luckner, et al., 1989; (NNA.19920320.0020). | 7204 |
| RELATIVE PERMITTIVITY | The property of a material that determines how much electrostatic energy can be stored per unit volume of the material when unit voltage is applied. | 1574 |
| RELATIVE PNEUMATIC CONDUCTIVITY | The ratio of the pneumatic conductivity of a porous rock, sediment, or soil under partially saturated conditions to the pneumatic conductivity of the same material to gas under dry conditions. | 396 |
| RELATIVE SUNSHINE DURATION | Percent of sunshine over a 24 hour period (i.e., takes into account the change in daylength for the time of year, and cloud cover for a given season). | 7213 |
| RELATIVE VEGETATION COVER | The vegetation cover of each species, expressed as a percent of the total vegetation cover of all species. | 6719 |
| RELEASED MASS | Total mass of water released from straddle packer outlet to the rock, after recovery from recirculation system | 7084 |
| REMANENT MAGNETIZATION | 1. The permanent magnetization orientation of a rock, established at the time of the rock's formation and conforming either to local ambient magnetic fields or to the orientation of the earth's magnetic field at the time. 2. Magnetic induction retained once the external magnetic field is removed. | 49 |
| REPOSITORY HARDWARE | 6269 | |
| REPOSITORY INTEGRATION PROGRAM (RIP) MODEL | Probabilistic data model that simulates the release, transport and fate of contaminants in environmental and engineered systems. | 6367 |
| REPOSITORY LOCATION | The geographical location of repository elements. | 926 |
| REPOSITORY LOWERING OF 100 M PROBABILITY | The measure of uncertainty associated with repository lowering of 100 m. | 446 |
| RESIDENTIAL LOCATIONS | The locations of legal residences of individuals and their dependents. | 1049 |
| RESIDUAL SATURATION | 5625 | |
| RESIDUAL STRESS | Stress that remains in a material or body after manufacture or processing in the absence of applied forces or thermal gradients. | 7261 |
| RESIDUE | Something that is left over; specific uses include: GEOLOGY. the accumulation of insoluble rock debris left in place after almost all the soluble constituents have been removed by weathering. CHEMICAL ENGINEERING. any original material remaining after a chemical process or reaction is complete. | 5729 |
| RESPIRABLE DUST | Particulate in the 10 to 1 micron size range collected by personal sampling pumps, calibrated over a known time period, expressed as weight or volume cubic capacity. | 6514 |
| RESUSPENDED PARTICULATE MATTER | The amount of respirable, resuspended dust from contaminated soil that is in the air (grams per cubic meter). | 6822 |
| RESUSPENSION ENHANCEMENT FACTOR | The ratio of mass activity concentration of a contaminant (e.g., a radionuclide) in airborne (resuspended) soil to that in surface soil. | 7256 |
| RETARDATION FACTOR | A value representing a condition which restricts (retards) the movement of a chemical substance in an aqueous medium. | 1517 |
| RHENIUM ABUNDANCE | The relative amount of Rhenium in a material, commonly expressed as a relative volume or mass. Concentration of mass per unit volume of Rhenium in a material. The ratio of Rhenium in a material. | 6880 |
| RHENIUM-185 ISOTOPE | The amount of rhenium-185 in a material commonly expressed as weight per unit sample weight (e.g. parts per million) or as an abundance relative to another isotope of the same element (atom ratio). | 7158 |
| RHODIUM ABUNDANCE | 1. The relative amount of Rhodium in a material, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of Rhodium in a material. 3. The ratio of Rhodium in a material. | 6362 |
| RHODIUM OXIDE ABUNDANCE | 1. The relative amount of Rhodium Oxide in a material, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of Rhodium Oxide in a material. 3. The ratio of Rhodium Oxide in a material. | 6385 |
| RHODIUM-103 ISOTOPIC ABUNDANCE | 1. The relative amount of isotopic rhodium-103 in a material, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of isotopic rhodium-103 in a material. 3. The ratio of isotopic rhodium-103 in a material. | 6465 |
| RILD RESISTIVITY | Resistivity measured by Induction Log, Deep Investigation. | 6795 |
| RILM RESISTIVITY | Resistivity measured by Induction Log, Medium Investigation. | 6796 |
| RILS RESISTIVITY | Resistivity measured by induction log, shallow investigation. | 6927 |
| ROCK AGE | The period of time since a rock was formed. | 35 |
| ROCK BLOCK OCCURRENCE | The size and frequency of rock blocks formed at the surrounding rock mass of an excavation by the intersection of three or more planes of structural discontinuities. | 7002 |
| ROCK BOLT LOAD | 5697 | |
| ROCK COMPOSITION | The components making up rock or produced by analysis. | 6767 |
| ROCK DIAGENESIS | The recombination or rearrangement of mineral or rock constituents other than by weathering or metamorphism, resulting in new constituents. | 305 |
| ROCK DISPLACEMENT | 1. The amount of movement of rock due to an external load or stress, measured at a point on the rock mass. 2. The amount a point on a rock moves. | 748 |
| ROCK INTERACTION WITH GROUNDWATER | Which rock constituents dissolve in water with time and temperature. | 6452 |
| ROCK MASS COHESION | Shear strength at zero normal stress for the rock mass. | 7029 |
| ROCK MASS COMPRESSIVE STRENGTH | The load per unit area at which an unconfined cylindrical specimen of the rock mass will fail in a simple compression test. (MPa) | 7025 |
| ROCK MASS DEFORMATION MODULUS | Ratio of stress to strain in simple compression or tension. (Pa) | 7027 |
| ROCK MASS DILATION ANGLE | The slope of the dilation curve at the peak stress. (degrees) | 7031 |
| ROCK MASS FRICTION ANGLE | For the rock mass, the angle forming the slope of the Mohr Coulomb failure envelope. (degrees) | 7030 |
| ROCK MASS POISSON'S RATIO | The absolute ratio of transverse strain to axial strain, rock mass. | 7028 |
| ROCK MASS QUALITY (Q) | A rock mass classification index ranging from 0.001 (very poor rock) to 1000 (excellent rock). | 6961 |
| ROCK MASS QUALITY CATEGORY | A number 1,2,3,4, and 5 used as an indicator of rock mass quality, where 1 indicates the lowest rock mass quality and 5 corresponds to the highest rock mass quality encountered within the area/tunnel investigated. The categories correspond to frequencies of occurrence (1 - 5%, 2 - 20%, 3 - 40%, 4 - 70%, 5 - 90%). The rock mass quality categories are used to provide a basis for ground support design at different levels of confidence. | 6958 |
| ROCK MASS RATING | Rock Mass Rating (RMR) is a dimensionless number from 0 to 100 that is calculated using six parameters (variables), one of which is C (Rock Strength (P69)). Other parameters (variables) include Irqd (Rock Quality Designation (P113)), Joint Spacing (JS), Joint Surface condition (JC), JW (groundwater parameter), and an adjustment for joint orientation (AJO). This definition is based on the equation: RMR = C + Irqd + JS + JC + JW + AJO (Kicker et al., 1997). | 5618 |
| ROCK MASS TENSILE STRENGTH | The load per unit area at which an unconfined specimen of the rock mass will fail in simple tension. (MPa) | 7026 |
| ROCK QUALITY DESIGNATION | An index of rock quality used as a basic element in rock mass classification. RQD is the sum of the lengths of rock core pieces 10 cm or longer divided by the total length of the core run. | 113 |
| ROCK QUALITY VALUE | Rock Quality Value (Q), is a dimensionless number from 0 to 100 that is calculated using six parameters (variables). These parameters (variables) are RQD(%) (Rock Quality Designation(P113)), Joint Roughness Number (Jn and Jr), Joint Alteration Number (Ja), Joint Water Fracture (Jw), and Stress Reduction Factor (SRF). This definition is based on the equation Q = (RQD/Jn) * (Jr/Ja) * (Jw/SRF) (Kicker et al., 1997). | 5619 |
| ROCK STRAIN | The relative amount of folding, faulting, shearing, compression, or extension of rock as a result of natural or man-made forces. | 97 |
| ROCK STRENGTH | The ability of a rock to resist stress without yielding or fracturing. | 69 |
| ROCK TRIAXIAL CREEP | The time dependent deformation due to sustained load. | 7212 |
| ROCK TYPE | 1. One of three major groups of rock: igneous, sedimentary, and metamorphic. 2. A particular kind of rock having a specific set of characteristics. | 127 |
| ROCK VARNISH AGE | Rock-varnish cation-ratio dating method used to estimate the exposure age of a surface or deposit based on the premise that a ratio of minor elements within the varnish systematically decreases with increasing exposure age. | 6703 |
| ROCK-QUALITY RANGES | 6482 | |
| ROMANECHITE ABUNDANCE | The relative amount of romanechite present in a rock or fracture, commonly expressed as a relative volume, mass, or percent of occurrence. | 6512 |
| RUBIDIUM ABUNDANCE | 1. The relative amount of rubidium in a material, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of rubidium in a material. 3. The ratio of rubidium in a material. | 1685 |
| RUBIDIUM-87/STRONTIUM-86 ISOTOPIC RATIO | The amount of rubidium-87/strontium-86 in a material commonly expressed as weight per unit sample weight (e.g. parts per million) or as an abundance relative to another isotope of a different element (atom ratio). | 3451 |
| RUN-ON | The volume or depth of the routed surface-water flow or flowing watercourse. | 7066 |
| RUNOFF | That part of precipitation appearing in surface-streams that does not infiltrate; i.e. is the volume or depth of water accumulation on the ground surface prior to being routed as surface-water flow. | 7065 |
| RUTHENIUM ABUNDANCE | 1. The relative amount of Ruthenium in a material, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of Ruthenium in a material. 3. The ratio of Ruthenium in a material. | 6363 |
| RUTHENIUM OXIDE ABUNDANCE | 1. The relative amount of Ruthenium Oxide in a material, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of Ruthenium Oxide in a material. 3. The ratio of Ruthenium Oxide in a material. | 6386 |
| RUTHENIUM-101 ISOTOPIC ABUNDANCE | 1. The relative amount of isotopic ruthenium-101 in a material, commonly expressed as a relative volume of mass. 2. Concentration of mass per unit volume of isotopic ruthenium-101 in a material. 3. The ratio of isotopic ruthenium-101 in a material. | 6463 |
| RUTILE ABUNDANCE | The relative amount of rutile present in a rock or fracture, commonly expressed as a relative volume, mass, or percent of occurrence. A red to reddish-brown tetragonal mineral of the rutile group, trimorphous with anatase and brookite, occurring in commonly twinned prismatic crystals and granular masses, having a specific gravity of 4.23 and a hardness of 6 to 6.5 on the Mohs scale; found in metamorphic and acid igneous rocks and as residual grains in beach sands. | 5711 |
| PARAMETER LIST | ||
| PARAMETER NAME | DEFINITION | PARAMETER KEY |
| SAMARIUM ABUNDANCE | 1. The relative amount of samarium in a material, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of samarium in a material. 3. The ratio of samarium in a material. | 1688 |
| SAMARIUM SORPTION DISTRIBUTION COEFFICIENT | The ratio for the various processes by which Samarium binds and distributes itself between other substances. | 6588 |
| SAMARIUM-147/NEODYMIUM-144 ISOTOPIC RATIO | The amount of samarium-147/neodymium-144 in a material commonly expressed as weight per unit sample weight (e.g. parts per million) or as an abundance relative to another isotope of a different element (atom ratio). | 3501 |
| SAMPLE SIZE | The dimensions of a representative segment of a larger whole that is studied in order to gain information about the characteristics of the whole. | 5755 |
| SAMPLING LOCATION | 1. The geographic location at which a sample has been taken. 2. The geographic location of sample collection. | 6820 |
| SANIDINE ABUNDANCE | The relative amount of sanidine present in a rock or fracture, commonly expressed as relative volume, mass, or percent of occurrence. | 5179 |
| SAPONITE ABUNDANCE | The relative amount of Saponite present in a rock or fracture, commonly expressed as relative volume, mass, or percent of occurrence. | 6745 |
| SATELLITE IMAGERY | Products of remote sensing techniques aquired by satellite. | 5703 |
| SATURATED BULK DENSITY | THE WEIGHT OF AN OBJECT OR MATERIAL DIVIDED BY ITS VOLUME, INCLUDING THE VOLUME OF ITS PORE SPACE. | 5456 |
| SATURATED HYDRAULIC CONDUCTIVITY | A measure of the ability of a material to transmit water through its connected pores under saturated conditions. Usually measured in m/d, m/s, cm/s, etc. | 6519 |
| SATURATION | The fraction of the total available pore space of a rock or soil that is occupied by fluid. | 52 |
| SATURATION RATIO | The ratio of saturation at a given time divided by the saturation for the baseline case. | 7146 |
| SCALE FACTOR | Multiplier for the soil-to-plant transfer factors and animal uptake transfer coefficients used for statistical simulation so that transfer factors can be scaled up and down with a specified distribution. | 6900 |
| SCANDIUM ABUNDANCE | 1. The relative amount of scandium in a material, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of scandium in a material. 3. The ratio of scandium in a material. | 1689 |
| SCARP MORPHOMETRY | The geometric form, measurement of shape and characteristics of scarps, commonly described and measured in terms of height and slope angle. | 326 |
| SCHMIDT REBOUND HARDNESS | A simple portable method of determining the hardness of a material by pushing a spring loaded plunger against a material. The amount of recoil is a measure of the hardness. | 7173 |
| SCORIA CONE MORPHOMETRY | The geometric characteristics of scoria cones, which are conical hills formed by the accumulation of cinders and other pyroclasts ejected from volcanos. | 330 |
| SEA-LEVEL PRESSURE | The atmospheric pressure at mean sea level, either directly measured or empirically determined from the observed station pressure. | 6562 |
| SEC-BUTYLBENZENE ABUNDANCE | 1. The relative amount of sec-butylbenzene in a material, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of sec-butylbenzene in a material. 3. The ratio of sec-butylbenzene in a material. | 1830 |
| SEED QUANTITY | Number of seeds in a sample. | 6980 |
| SEEDING RATE | The application rate of seed placed on a area being reclaimed. | 7095 |
| SEEP FLOW RATE | Rate of flow of water onto waste packages contacted by seep. | 6359 |
| SEEPAGE FRACTION | 1. Fraction of waste package contacted by seepage. 2. Fraction of seepage recovered from injection. | 6358 |
| SEEPAGE MASS | Water recovered from seepage tests on a capture balance. | 7208 |
| SEEPAGE MODEL | A model which simulates 3-D flow of water into rock with potential emplacement drifts. | 6945 |
| SEEPAGE PERCENTAGE | 6265 | |
| SEEPAGE RATE | 6352 | |
| SEEPAGE THRESHOLD FLUX | 6206 | |
| SEISMIC ACCELERATION | 5616 | |
| SEISMIC AMPLITUDE | The absolute value of displacement of a seismic oscillation. | 267 |
| SEISMIC ATTENUATION | Reduction of the energy or amplitude of seismic waves by divergence, reflection, scattering, and absorption. | 263 |
| SEISMIC DESIGN STRAIN PROFILES | 5810 | |
| SEISMIC DESIGN TIME HISTORIES | 5809 | |
| SEISMIC DURATION | The length of time over which a single seismic event is detected at a given seismograph. | 264 |
| SEISMIC HISTORY | The history of a seismic event, recorded on a seismogram. | 106 |
| SEISMIC IMPEDANCE | The effective resistance to the propogation of seismic waves (density * velocity). This parameter determines the reflective vs. refractive characteristics of waves. | 266 |
| SEISMIC P-WAVE DAMPING | The level of damping of compression waves corresponding to the strain experienced during the seismic design acceleration time history. | 7039 |
| SEISMIC P-WAVE VELOCITY | Velocity of the compressional (P) wave from a seismic energy source. | 6819 |
| SEISMIC PROFILE | A graph of a measured seismic quantity against horizontal distance. | 1567 |
| SEISMIC REFLECTION LINE LOCATION | A set of location points from which ground motion induced test data is recorded. | 5461 |
| SEISMIC REFLECTION STATION LOCATION | The geographic location of a seismic reflection station. | 6567 |
| SEISMIC REFRACTION LINE LOCATION | The geographic location of a seismic refraction line. | 6556 |
| SEISMIC S-WAVE DAMPING | The level of damping of shear waves corresponding to the shear strain experienced during the seismic design acceleration time history as defined by the material damping versus shear strain relationship. | 7038 |
| SEISMIC S-WAVE VELOCITY | Velocity of the shear (S) wave from a seismic energy source. | 6818 |
| SEISMIC SCENARIO AND DAMAGE ABSTRACTIONS TO EBS COMPONENTS | The seismic scenario defines the computational algorithm for including seismic effects in TSPA-LA. The seismic damage abstractions define: (1) the failed areas on the waste package and drip shield in response to ground motion and fault displacement at the emplacement drifts, and (2) the percent of perforated cladding in response to ground motion and fault displacement. | 7316 |
| SEISMIC SOURCE GEOMETRY | The location and orientation of seismogenic depths of a fault, fault zone, or seismic source in three-dimensions; typically includes fault length, fault dip, and down dip extent or width. | 1586 |
| SEISMIC SPECTRA | 1. The characteristic phenomena arising from subsurface geologic media responding to natural or artificially created seismic waves. 2. Curve showing amplitude of ground motion as a function of frequency or period obtained by fourier analysis of the ground motion. 3. The characteristic frequency spectra associated within a seismic event. | 270 |
| SEISMIC TIME SERIES | The ground motion sensed by a seismological instrument and sampled at a regular interval to provide a time series of the seismic event motion. | 7270 |
| SEISMIC VELOCITY | The rate, measured in distance per unit time, in which seismic waves propagate. | 271 |
| SEISMIC WAVE ANGLE OF INCIDENCE | The angle that a ray of energy makes with the normal to a boundary surface. | 7059 |
| SEISMIC WAVE ARRIVAL TIME | In earthquake seismology, arrival time may be stated as absolute time in reference to a standard such as Universal Time Coordinated (UTC), or as elapsed time in relation to a specific reference minute associated with the origin time of the causative event. Seismic Wave Arrival Time is the time at which the first ground motion associated with a seismic wave froma particular seismogenic event is detected at a seismograph station. | 6780 |
| SEISMOGRAPH STATION LOCATION | Location of a seismograph station. | 6434 |
| SELENIUM ABUNDANCE | 1. The relative amount of selenium in a material, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of selenium in a material. 3. The ratio of selenium in a material. | 1690 |
| SELENIUM SORPTION | A general term for the various processes by which Selenium binds to another substance, especially the process of absorption (taking in the other substance completely) or adsorption (holding the other substance on the surface). | 6160 |
| SELENIUM SORPTION DISTRIBUTION COEFFICIENT | The ratio for the various processes by which Selenium binds and distributes itself between other substances. | 7079 |
| SEM IMAGE | 1.Scanning Electron Microscope (SEM) image of coupon corrosion or other materials degradation. Definition for corrosion is to wear or be worn away gradually (as by chemical, bacterial, or other degrading action); 2. SEM images of welds, base metal,& grain boundary precipitation (incl. ordering if present) after aging alloys at var. times and temperatures (incl. non-aged alloys). 3. SEM image of geologic materials for qualitative evaluation of the materials. | 6724 |
| SENSITIVE SPECIES LOCATION | The geographic location of sensitive species location. | 6741 |
| SENSOR ID | The identification number assigned to a signal transmitter or receiver. | 7200 |
| SEPIOLITE ABUNDANCE | The relative amount of sepiolite present in a rock or fracture, commonly expressed as a relative volume, mass, or percent of occurrence. | 6277 |
| SETTLING VELOCITY WASTE PARTICLES IN LIQUID WASTE | The rate at which suspended waste particles differentiate from the liquid waste and are deposited. | 6845 |
| SETTLING VELOCITY WASTE PARTICLES IN PYROCLASTIC MAGMA | The rate at which suspended waste particles differentiate from the pyroclastic magma and are deposited. | 6846 |
| SFL RESISTIVITY | Resistivity measured by Spherically Focussed Log. | 6797 |
| SHEAR MODULUS | The stiffness factor for a material under shear stress, expressed by the relationship of the applied shear force to the change in position produced by this force, calculated as the product of the total mass density (total unit weight divided by gravity) and the square of the shear wave velocity. | 1137 |
| SHEAR STRENGTH | The maximum shear stress that a material can withstand without failure. | 1145 |
| SHEAR STRESS | A stress acting parallel to the surface of the plane being considered. | 7341 |
| SHEAR STRESS ADJACENT TO DIKE | Shear stress along a given reference plane. | 7300 |
| SHEARING STRAIN | The strain (displacement divided by original distance) causing the deformation of a solid body in which a plane in the body is displaced parallel to itself relative to parallel planes in the body, as determined by the change in angle between points on the two surfaces that were originally perpendicular to each other and both perpendicular to the plane of movement. | 6759 |
| SHIPPING CONTAINER CAPACITIES | The material components, expressed as number of fuel assemblies as a package designed and/or constructed to contain high-level radioactive waste or spent nuclear fuel to be emplaced in a geologic repository. | 6706 |
| SHOCK WAVE PROPAGATION | Shock loading of waste packages in drift from shock wave produced by intruding dike. | 7152 |
| SIDERITE ABUNDANCE | Usually yellow-brown, brown-red, or brown-black, but is sometimes white or gray; it is often found in impure form in beds and nodules in clay and shales, and as a directly precipitated deposit partly altered into iron oxides. A rhombohedral mineral of the calcite group. | 6417 |
| SIGMA 1' | Major pricipal effective stress - In a triaxial compression test, the axial pressure (oriented normal to the axis of loading), equal in all directions minus the stress component due to water (hydrostatic pressure). | 7192 |
| SIGMA 3' | Minor principal effective stress - In a triaxial compression test, that lateral pressure (oriented normal to the axis of loading), equal in all directions minus the stress component due to water (hydrostatic pressure). | 7191 |
| SIGMA CAPTURE CROSS SECTION | Sigma neutron cross section using the thermal decay tool. | 7120 |
| SILICA | Silicon Dioxide, SiO2, occurring naturally in crystalline form as low and high quartz, cristobalite, tridymite, and as coesite and stishovite; in microcrystalline form as chalcedony and chert; and in amorphous form as lechatelierite and opal. Used to make glass, ceramics, and concrete; and, in pharmaceuticals, cosmetics, and insecticides, and for many other purposes. | 5867 |
| SILICA ABUNDANCE | The relative amount of silica present in a rock or fracture, commonly expressed as relative volume, mass, or percent of occurrence. | 5231 |
| SILICA PRECIPITATION RATE | The process of depositing Silica from a solution, by the action of gravity or by a chemical reaction. The sum of the Silica particles that are deposited in such as process per unit time. | 6770 |
| SILICA/FELDSPAR RATIO | The amount of Silica/Feldspar in a material commonly expressed as a weight per unit sample weight (e.g. parts per million) or as an abundance relative to a different mineral. | 6366 |
| SILICATE GROUP ABUNDANCE | 1. The relative amount of silicate in a material, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of silicate in a material. 3. The ratio of silicate in a material. | 1831 |
| SILICATE IN SOLUTION ABUNDANCE | 1. The relative amount of Silicate material in solution, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of Silicate material in solution. 3. The ratio of Silicate material in solution in a material. | 6323 |
| SILICON ABUNDANCE | 1. The relative amount of silicon in a material, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of silicon in a material. 3. The ratio of silicon in a material. | 1691 |
| SILICON DIOXIDE ABUNDANCE | 1. The relative amount of silicon dioxide in a material, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of silicon dioxide in a material. 3. The ratio of silicon dioxide in a material. | 1833 |
| SILICON-29 ISOTOPIC ABUNDANCE | The relative amount of isotopic Silicon-29 in a material commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume if isotopic Silicon-29 in a material. 3. The ratio of isotopic Silicon-29 in a material. | 7099 |
| SILVER ABUNDANCE | 1. The relative amount of silver in a material, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of silver in a material. 3. The ratio of silver in a material. | 1692 |
| SILVEX ABUNDANCE | The relative amount of silvex present in a rock or fracture, commonly expressed as a relative volume, mass, or percent of occurrence. | 5802 |
| SIMAZINE ABUNDANCE | The relative amount of simazine present in a rock or fracture, commonly expressed as a relative volume, mass, or percent of occurrence. | 5772 |
| SIMETRYN ABUNDANCE | The relative amount of simetryn present in a rock or fracture, commonly expressed as a relative volume, mass, or percent of occurrence. | 5773 |
| SIMULATION | The representation of the functioning of one system or process by means of functioning of another process, i.e., Latin Hypercube simulations. | 7068 |
| SITE MODEL | A representation of site earth science characteristics. | 5460 |
| SLOPE ASPECT | The direction toward which a slope faces with respect to the compass or to the rays of the sun. | 1105 |
| SLOPE MAGNITUDE | A measurement of the inclined surface of any part of the earth's surface, as a hillslope. | 1104 |
| SLOW-DOWN TIME NEUTRON POROSITY | Porosity derived from a borehole log measurement of the attenuation time of the neutrons emitted by the tool's source. | 6926 |
| SLUMP | The distance between the original and displaced position of the center of the top surface of a cone of freshly mixed concrete. | 6644 |
| SMECTITE ABUNDANCE | The relative amount of smectite present in a rock or fracture, commonly expressed as relative volume, mass, or percent of occurrence. | 5246 |
| SN RESISTIVITY | Short Normal (SN) resistivity measuring system has a shallow depth of investigation (16 inches) and is designed to measure the resistivity of what is normally the invaded zone beyond the borehole. | 6816 |
| SNOW DEPTH | The depth of snow accumulated on the ground as measured from the surface of the snow to the ground surface. | 7110 |
| SNOWFALL | The rate at which snow falls, usually expressed as a depth per unit time. | 6560 |
| SNP POROSITY | Porosity measured by Sidewall Neutron Porosity Log. | 6804 |
| SO4-REDUCING BACTERIA | 6186 | |
| SOCIOECONOMIC - ENVIRONMENTAL BASELINE FILE | A Draft Environmental Impact Statement Supporting Documents category that documents current conditions so that changes can be identified which are related to information regarding both social and economic factors such as but not limited to employment, enrollment in educational institutions, power usage, traffic, wastewater treatment, and taxes. | 7058 |
| SOCIOECONOMIC DATA COLLECTION BOUNDARIES | Boundaries of specific labeled geographic areas from which data are collected for the Radiological Monitoring Program (RadMP). These units are generally referred to as "blocks" for the purpose of a housing unit survey, and "tracts" for a survey of agriculture. | 7317 |
| SODIUM | A metallic element having the symbol Na, the atomic number 11, an atomic weight of 22.99, a melting point of 97 degrees Celsius, and a boiling point of 883 degrees Celsius; a tetragonal, crystalline, soft, silvery-white solid that does not occur in elemental form in nature due to high reactivity; it has excellent electrical conductivity and high heat-absorbing capacity; used as a supplier of electrons in laboratory reactions, as a conductor in cables, in alloys, and as a polymerization catalyst. | 5884 |
| SODIUM ABSORPTION RATIO | The ratio of sodium ions in solution to the sodium ions absorbed within a solid or liquid. | 6810 |
| SODIUM ABUNDANCE | 1. The relative amount of sodium in a material, commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of sodium in a material. 3. The ratio of sodium in a material. | 1693 |
| SODIUM ADSORPTION RATIO | 1. The ratio of sodium ions in solution to the sodium ions adhere onto the surface of a solid. 2. The ratio of sodium to calcium + magnesium in a soil. A sodium adsorption ratio above 13 indicates a sodic soil. | 5507 |
| SODIUM CHLORIDE ABUNDANCE | The relative amount of sodium chloride present in a rock or fracture, commonly expressed as a relative volume, mass, or percent of occurrence. Common table salt; colorless transparent crystals or a white crystalline powder; soluble in water and absorbs some water from the air; melts at 801 degrees Celsius and boils at 1413 degrees Celsius. | 5752 |
| SODIUM OXIDE | Na2O, a caustic white powder; sublimes when heated to 1275^oC; reacts with water to give Sodium Hydroxide; strongly basic, caustic, and a strong irritant; used as a polymerizing and dehydrating agent. | 5886 |
| SODIUM OXIDE ABUNDANCE | The relative amount of sodium oxide present in a rock or fracture, commonly expressed as a relative volume, mass, or percent of occurrence. A caustic white powder; sublimes when heated to 1275 degrees Celsius; reacts with water to give sodium hydroxide; strongly basic, caustic, and a strong irritant. | 5632 |
| SODIUM-23 ISOTOPIC ABUNDANCE | The relative amount of isotopic Sodium-23 in a material commonly expressed as a relative volume or mass. 2. Concentration of mass per unit volume of isotopic Sodium-23 in a material. 3. The ratio of isotopic Sodium-23 in a material. | 7096 |
| SODIUM/POTASSIUM RATIO | The amount of Sodium/Potassium in a material commonly expressed as a weight per unit sample weight (e.g. parts per million) or as an abundance relative to a different element (atom ratio). | 6398 |
| SOIL BULK DENSITY | The concentration ratio of soil matter to the unit volume of a material substance. | 6890 |
| SOIL COLLAPSE POTENTIAL | The property of some soil to exhibit a sharp drop in void space with simultaneous increase in density upon wetting. | 1138 |
| SOIL COMPACTION | 1. Any process, such as burial, desiccation, or consolidation by which a soil mass loses pore space and becomes more dense, thereby increasing its bearing capacity and general stability. 2. The densification of a soil by mechanical means, accomplished by rolling, tamping, or vibrating. | 848 |
| SOIL DESCRIPTION | All the characteristics of a soil, including type, color, texture, particle size, pH, and/or organic/mineral content. | 1128 |
| SOIL DEVELOPMENT RATE | The rate at which a particular soil type develops under specific conditions. | 38 |
| SOIL DISPLACEMENT | The amount of soil movement away from its original position. | 710 |
| SOIL DUST ABUNDANCE | The amount of soil dust present in a particular area relative to that present in other areas. | 129 |
| SOIL EXPOSURE TIME | The amount of time (hours per year) a reference person spends outdoors exposed to contaminated soil. | 6825 |
| SOIL GENESIS | The mode, processes, and factors responsible for the origin and development of a true soil from unconsolidated parent material. | 1525 |
| SOIL INGESTION RATE | Inadvertent soil ingestion by humans from food or water. | 6884 |
| SOIL LOCATION | The geographic location of soils. (Used primarily for spatial data) | 6596 |
| SOIL PARTICLE QUANTITY | The quantity of fragments, sand, silt, clay, or other types of soil particles in a sample. | 6611 |
| SOIL REDISTRIBUTION FACTOR | The means by which soil is redistributed after a volcanic eruption. | 7332 |
| SOIL RETENTION COEFFICIENT | Soil solid/liquid portion coefficients (Kd values) that represent the degree to which specific elements will bind to a soil. | 6971 |
| SOIL SETTLEMENT | The amount of soil settlement from its original position. | 716 |
| SOIL STRENGTH | The ability of a soil to withstand load. The expression of strength depends on the method of test. As used in experimental structural geology of soils, the term is meaningful only when all the environmental conditions of the experiment are specified. As used in geotechnical engineering, the results must include the type of test performed. | 95 |
| SOIL TEMPERATURE | Temperature, in degrees Celsius, measured by probes buried in the soil. | 6700 |
| SOIL TEXTURE | The soil textural class based on the relative proportion of sand, silt, and clay in a soil. | 6613 |
| SOIL-TO-PLANT TRANSFER FACTOR | Ratio of radioactivity concentration in the edible part of plant (Bq/kg) to the radioactivity concentration in soil (Bq/kg). Expressed as dry soil weight to dry or wet plant weight. The soil-to-plant transfer factor varies with crop type and variety, stage of growth, plant part, soil properties, geochemical properties of the radionuclide in soil, and agriculture practices. | 6897 |
| SOLAR FLUX | The amount of solar radiation received at a unit area of the earth's surface in a unit time. | 594 |
| SOLID WASTE FORM | Solid material containing radioactive species. | 6619 |
| SOLIDIFICATION TIME | Time required for liquid magma plug, from intruding dike, to solidify in place. | 7153 |
| SOLUBILITY | The equilibrium concentration of a solute in a solution saturated with respect to that solute at a given temperature and pressure. | 1114 |
| SOLUBILITY CONTROLLING SOLIDS | The solid phase in contact with saturated solution at equilibrium that controls the dissolved species concentration. | 645 |
| SOLUBILITY PRODUCT | Solubility Product or precipitation is the product of the concentration of the ions of a substance in a saturated solution of the substance. These concentrations are frequently expressed as moles of solute per liter of solution. | 6728 |
| SOLUTE BREAKTHROUGH CURVES | Solute concentration versus time response at a specified region. | 7328 |
| SOLUTE FLOWPATH | The three-dimensional path of the movement, or flow, of solute in the subsurface. | 7327 |
| SORBING ELEMENT CONCENTRATION | ||