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1993 Annual Progress Report for Subsidiary Agreement No. 2 (1991--1996) Between AECL and US/DOE for a Radioactive Waste Management Technical Co-Operative Program

Description: A coordinated research program on radioactive waste disposal is being carried out by the Atomic Energy of Canada Limited and the US Department of Energy. This annual report describes progress in the following eight studies: Fundamental materials investigations; In-situ stress determination; Development of a spent fuel dissolution model; Large block tracer test--Experimental testing of retardation models; Laboratory and field tests of in-situ hydrochemical tools; Cigar Lake--Analogue study, acti… more
Date: December 31, 1993
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Evidence for a welded tuff in the Rhyolite of Calico Hills

Description: A welded pyroclastic deposit has been identified in the Rhyolite of Calico Hills near Yucca Mountain, Nevada, where only lava flows and nonwelded pyroclastic deposits were previously described. Field data from Fortymile Wash show that nonwelded, bedded tuff grades upward into partially welded massive ruff, and thence into densely welded vitrophyre. Petrographic data show a progressive decrease in inter- and intragranular porosity and amount of vapor-phase minerals, with increasing welding. Pumi… more
Date: December 31, 1994
Creator: Dickerson, Robert P. & Hunter, W. Clay
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Hydrogeology of the unsaturated zone, Yucca Mountain, Nevada

Description: The unsaturated volcanic tuff beneath Yucca Mountain, Nevada, is being evaluated by the US Department of Energy as a host rock for a potential mined geologic repository for high-level radioactive waste. Assessment of site suitability needs an efficient and focused investigative program. A conceptual hydrogeologic model that simulates the flow of fluids through the unsaturated zone at Yucca Mountain was developed to guide the program and to provide a basis for preliminary assessment of site suit… more
Date: December 31, 1985
Creator: Montazer, P. & Wilson, W. E.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Geologic and hydrologic characterization and evaluation of the Basin and Range Province relative to the disposal of high-level radioactive waste. Part III. Geologic and hydrolic evaluation

Description: The geologic and hydrologic factors considered in the Province evaluation include distribution of potential host rocks, tectonic conditions and data on ground-water hydrology. Potential host media considered include argillaceous rocks, tuff, basaltic rocks, granitic rocks, evaporites, and the unsaturated zone. The tectonic factors considered are Quaternary faults, late Cenozoic volcanics, seismic activity, heat flow, and late Cenozoic rates of vertical uplift. Hydrologic conditions considered i… more
Date: December 31, 1983
Creator: Bedinger, M.S.; Sargent, K.A. & Brady, B.T.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Kriging for interpolation of sparse and irregularly distributed geologic data

Description: For many geologic problems, subsurface observations are available only from a small number of irregularly distributed locations, for example from a handful of drill holes in the region of interest. These observations will be interpolated one way or another, for example by hand-drawn stratigraphic cross-sections, by trend-fitting techniques, or by simple averaging which ignores spatial correlation. In this paper we consider an interpolation technique for such situations which provides, in additi… more
Date: December 31, 1986
Creator: Campbell, K.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Estimates of the width of the wetting zone along a fracture subjected to an episodic infiltration event in variably saturated, densely welded tuff

Description: A central issue to be addressed within the Nevada Nuclear Waste Storage Investigations (NNWSI) is the role which fractures will play as the variably saturated, fractured rock mass surrounding the waste package responds to heating, cooling, and episodic infiltration events. Understanding the role of fractures during such events will, in part, depend on our ability to make geophysical measurements of perturbations in the moisture distribution in the vicinity of fractures. In this study we first e… more
Date: May 31, 1988
Creator: Buscheck, T. A. & Nitao, J. J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Analysis of earthquake data recorded by digital field seismic systems, Jackass Flats, Nevada

Description: Analysis of 59 time series from ten small magnitude earthquakes recorded in 1981 by portable digital seismic systems at the southern Nevada Test Site (NTS) yielded several significant results. We find that moment magnitude (M/sub L/) (local magnitude determined from seismic moment) correlates closely with coda duration magnitudes M/sub d/ determined by the Southern Great Basin Seismic Network (SGBSN). Further, local magnitude M/sub W A/ computed from displacement seismograms simulating Wood-And… more
Date: December 31, 1986
Creator: Tarr, A. C. & Rogers, A. M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Yucca Mountain Site Characterization Project technical data catalog quarterly supplement

Description: The Department of Energy (DOE)/Nuclear Regulatory Commission (NRC) Site-Specific Procedural Agreement for Geologic Repository Site Investigation and Characterization Program requires the DOE to develop and maintain a catalog of data which will be updated and provided to the NRC at least quarterly. This catalog is to include a description of the data; the time (date), place, and method of acquisition; and where the data may be examined. The Yucca Mountain Site Characterization Project (YMP) Tech… more
Date: March 31, 1995
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Radionuclide releases from natural analogues of spent nuclear fuel

Description: Measures of {sup 99}Tc, {sup 129}I, {sup 239}Pu and U concentrations in rock samples from uranium deposits at Cigar Lake and Koongarra have been used to study processes of radionuclide release from uranium minerals. Rates of release have been immeasurably slow at Cigar Lake. At Koongarra release rates appear to have been faster, producing small deficiencies of {sup 99}Tc, and larger ones of {sup 129}I. The inferred differences in radionuclide release rates are consistent with expected differenc… more
Date: December 31, 1993
Creator: Curtis, David B.; Fabryka-Martin, June; Dixon, Paul R.; Aguilar, Ruben D.; Rokop, Donald J. & Cramer, J.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

The influence of annual species composition and density on perennial seedling density in four plant communities in the Northern Mojave Desert

Description: According to the Nuclear Waste Policy Act of 1982 (as amended in 1987), the US Department of Energy (DOE) must study and characterize Yucca Mountain as a potential site for long-term underground storage of high-level nuclear waste. Part of the overall site characterization program is to monitor potential impacts on the biological resources at Yucca Mountain. A part of the biological monitoring program, assessed vegetation parameters included density of annual and perennial seedlings. This data … more
Date: December 31, 1993
Creator: Hall, P. F.; Angerer, J. P.; Ostler, W. K. & Schultz, B. W.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Costs and impacts of transporting nuclear waste to candidate repository sites

Description: In this paper, a status report on the current estimated costs and impacts of transporting high-level nuclear wastes to candidate disposal sites is given. Impacts in this analysis are measured in terms of risk to public health and safety. Since it is difficult to project the status of the nuclear industry to the time of repository operation - 20 to 50 years in the future - particular emphasis in the paper is placed on the evaluation of uncertainties. The first part of this paper briefly describe… more
Date: December 31, 1983
Creator: McSweeney, T.I.; Peterson, R.W. & Gupta, R.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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