干旱区生态环境知识资源中心(Arid): Analysis of fractures in volcanic cores from Pahute Mesa, Nevada Test Site

Arid

DOI	10.2172/623041
报告编号	DOE/NV/11718--160
来源ID	OSTI_ID: 623041
	Analysis of fractures in volcanic cores from Pahute Mesa, Nevada Test Site
	Drellack, S.L. Jr.; Prothro, L.B.; Roberson, K.E. [and others]
英文摘要	The Nevada Test Site (NTS), located in Nye County, southern Nevada, was the location of 828 announced underground nuclear tests, conducted between 1951 and 1992. Approximately one-third of these tests were detonated near or below the water table. An unavoidable consequence of these testing activities was introducing radionuclides into the subsurface environment, impacting groundwater. Groundwater flows beneath the NTS almost exclusively through interconnected natural fractures in carbonate and volcanic rocks. Information about these fractures is necessary to determine hydrologic parameters for future Corrective Action Unit (CAU)-specific flow and transport models which will be used to support risk assessment calculations for the U.S. Department of Energy, Nevada Operations Office (DOE/NV) Underground Test Area (UGTA) remedial investigation. Fracture data are critical in reducing the uncertainty of the predictive capabilities of CAU-specific models because of their usefulness in generating hydraulic conductivity values and dispersion characteristics used in transport modeling. Specifically, fracture aperture and density (spacing) are needed to calculate the permeability anisotropy of the formations. Fracture mineralogy information is used qualitatively to evaluate diffusion and radionuclide retardation potential in transport modeling. All these data can best be collected through examination of core samples.
出版年	1997
报告类型	Technical Report
语种	英语
国家	美国
来源学科分类	54 ENVIRONMENTAL SCIENCES ; 45 MILITARY TECHNOLOGY, WEAPONRY, AND NATIONAL DEFENSE ; NEVADA TEST SITE ; SITE CHARACTERIZATION ; STRATIGRAPHY ; DRILL CORES ; GROUND WATER ; NUCLEAR EXPLOSIONS ; UNDERGROUND EXPLOSIONS ; GEOLOGIC FRACTURES ; RADIONUCLIDE MIGRATION
URL	http://www.osti.gov/scitech/servlets/purl/623041
资源类型	科技报告
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/267278
推荐引用方式 GB/T 7714	Drellack, S.L. Jr.,Prothro, L.B.,Roberson, K.E. [and others]. Analysis of fractures in volcanic cores from Pahute Mesa, Nevada Test Site,1997.