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in subjects: "58 Geosciences"

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Novel experiments for understanding the shallow-land burial of low-level radioactive wastes

Three field experiments that will provide data on water movement in SLB facilities are described. The experiments are designed to measure water movement, to quantify techniques to control water movement and to determine the effects of surface moisture content fluctuations on liquid and vapor movement back to the surface.

Date: January 1, 1982

Creator: DePoorter, G. L.; Abeele, W. V.; Hakonson, T. E.; Burton, B. W. & Perkins, B. A.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Bibliography of the paleontology and paleoecology of the Devonian-Mississippian black-shale sequence in North America

The Devonian-Mississippian black-shale sequence is one of the most prominent and well-known stratigraphic horizons in the Paleozoic of the United States, yet the paleontology and its paleoecologic and paleoenvironmental implications are poorly known. This is in larger part related to the scarcity of fossils preserved in the shale - in terms of both diversity and abundance. Nonetheless, that biota which is preserved is well-known and much described, but there is little synthesis of this data. Th… more

Date: June 1, 1980

Creator: Barron, L. S. & Ettensohn, F. R.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Hardware description ADSP-21020 40-bit floating point DSP as designed in a remotely controlled digital CW Doppler radar

A continuous wave Doppler radar system has been designed which is portable, easily deployed, and remotely controlled. The heart of this system is a DSP/control board using Analog Devices ADSP-21020 40-bit floating point digital signal processor (DSP) microprocessor. Two 18-bit audio A/D converters provide digital input to the DSP/controller board for near real time target detection. Program memory for the DSP is dual ported with an Intel 87C51 microcontroller allowing DSP code to be up-loaded o… more

Date: January 1, 1991

Creator: Morrison, R. E. & Robinson, S. H.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Intermediate simulation of the inverse seismic problem

An introductory study of the inverse seismic problem is performed. The complex cepstrum of a seismogram generated by the convolution of three factors, the Seggern-Blandford source function of an explosion, the Futterman mantle transfer function, and the SRO seismometer transfer function, is used. For a given Q and yield, a synthetic seismogram is computed. Arbitrary values of Q and yield are introduced, and a search is conducted to find that pair of values that minimized the cepstral difference… more

Date: March 1, 1980

Creator: Brolley, J.E.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Brief overview of geophysical probing technology

An evaluation of high-resolution geophysical techniques which can be used to characterize a nulcear waste disposal site is being conducted by the Lawrence Livermore National Laboratory (LLNL) at the request of the US Nuclear Regulatory Commisson (NRC). LLNL is involved in research work aimed at evaluating the current capabilities and limitations of geophysical methods used for site selection. This report provides a brief overview of the capabilities and limitations associated with this technolo… more

Date: February 1, 1982

Creator: Ramirez, A.L. & Lytle, R.J.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Hydrogeological characterization of Back Forty area, Albany Research Center, Albany, Oregon

Radiological surveys were conducted to determine the potential migration of radionuclides from the waste area to the area commonly referred to as the Back Forty, located in the southern portion of the ARC site. The survey results indicated that parts of the Back Forty contain soils contaminated with uranium, thorium, and their associated decay products. A hydrogeologic characterization study was conducted at the Back Forty as part of an effort to more thoroughly assess radionuclide migration in… more

Date: December 1, 1983

Creator: Tsai, S.Y. & Smith, W.H.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

The electrical resistivity method in cased boreholes

The use of downhole current sources in resistivity mapping can greatly enhance the detection and delineation of subsurface features. The purpose of this work is to examine the resistivity method for current sources in wells cased with steel. The resistivity method in cased boreholes with downhole current sources is investigated using the integral equation (IE) technique. The casing and other bodies are characterized as conductivity inhomogeneities in a half-space. For sources located along the … more

Date: May 1, 1991

Creator: Schenkel, C.J.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Disruptive event analysis: volcanism and igneous intrusion

An evaluation is made of the disruptive effects of volcanic activity with respect to long term isolation of radioactive waste through deep geologic storage. Three major questions are considered. First, what is the range of disruption effects of a radioactive waste repository by volcanic activity. Second, is it possible, by selective siting of a repository, to reduce the risk of disruption by future volcanic activity. And third, can the probability of repository disruption by volcanic activity b… more

Date: August 1, 1980

Creator: Crowe, B.M.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Fourteenth workshop geothermal reservoir engineering: Proceedings

The Fourteenth Workshop on Geothermal Reservoir Engineering was held at Stanford University on January 24--26, 1989. Major areas of discussion include: (1) well testing; (2) various field results; (3) geoscience; (4) geochemistry; (5) reinjection; (6) hot dry rock; and (7) numerical modelling. For these workshop proceedings, individual papers are processed separately for the Energy Data Base.

Date: January 1, 1989

Creator: Ramey, H. J., Jr.; Kruger, P.; Horne, R. N.; Miller, F. G.; Brigham, W. E. & Cook, J. W.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Phreatic flow on sloping soil layers from a finite source: An analytical solution

Sloping clay layers beneath percolation ponds can cause infiltrating wastewater to pond and move in directions not predicted by vertical infiltration equations. This report presents a method for estimating the potential of wastewater from percolation sumps located over sloping clay layers to interact with nearby groundwater resources. The analytical solution developed is for steady-state conditions and includes a procedure to estimate the time needed to reach steady state. The fundamental assum… more

Date: September 1, 1991

Creator: Filley, T.H.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Report of exploratory trenching for the Decontamination and Waste Treatment Facility at Lawrence Livermore National Laboratory, Livermore, California

Three exploratory trenches, totaling about 1,300 ft in length were excavated and logged across the site of a proposed Decontamination and Waste Treatment Facility (DWTF), to assess whether or not active Greenville fault zone, located about 4100 ft to the northeast, pass through or within 200 ft of the site. The layout of the trenches (12-16 ft deep) was designed to provide continuous coverage across the DWTF site and an area within 200 ft northeast and southwest of the site. Deposits exposed in… more

Date: December 1, 1985

Creator: Dresen, M.D. & Weiss, R.B.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Studies of the subsurface effects of earthquakes

As part of the National Terminal Waste Storage Program, the Savannah River Laboratory is conducting a series of studies on the subsurface effects of earthquakes. This report summarizes three subcontracted studies. (1) Earthquake damage to underground facilities: the purpose of this study was to document damage and nondamage caused by earthquakes to tunnels and shallow underground openings; to mines and other deep openings; and to wells, shafts, and other vertical facilities. (2) Earthquake rela… more

Date: January 1, 1980

Creator: Marine, I W

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

The application of the ADSP-21020 40-bit floating point DSP microprocessor in a digital Doppler radar

A continuous wave doppler radar system has been designed which is portable, easily deployable and can be remotely controlled. The system is immune to ground clutter and is used for wind speed detection and direction determination. Nearly real time digital signal processing is performed by an Analog Devices ADSP-21020, a 40-bit floating point Digital Signal Processing (DSP) microprocessor. This paper provides an overview of the design of the system including the radio frequency (RF) to digital i… more

Date: August 26, 1991

Creator: Robinson, S. H. & Morrison, R. E.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Natural repository analogue program. Progress report, October 1-December 31, 1981

The final draft of a paper entitled The Oklo Reactors: Natural Analogs to Nuclear Waste Repositories has been submitted for publication. This paper discusses the chemical stability of the fossil reactors with respect to uranium, neodymium, ruthenium, and technetium, the transport of elements in the geologic environment at Oklo; and the geochemical conditions that may have influenced these processes. Measurements of barium isotopic ratios limit the abundance of fissiogenic barium to <10/sup -7/ … more

Date: March 1, 1982

Creator: Curtis, D.B. (comp.)

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Proceedings of the 1981 subseabed disposal program. Annual workshop

The 1981 Annual Workshop was the twelfth meeting of the principal investigators and program management personnel participating in the Subseabed Disposal Program (SDP). The first workshop was held in June 1973, to address the development of a program (initially known as Ocean Basin Floors Program) to assess the deep sea disposal of nuclear wastes. Workshops were held semi-annually until late 1977. Since November 1977, the workshops have been conducted following the end of each fiscal year so tha… more

Date: January 1, 1982

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

PATHS groundwater hydrologic model

A preliminary evaluation capability for two-dimensional groundwater pollution problems was developed as part of the Transport Modeling Task for the Waste Isolation Safety Assessment Program (WISAP). Our approach was to use the data limitations as a guide in setting the level of modeling detail. PATHS Groundwater Hydrologic Model is the first level (simplest) idealized hybrid analytical/numerical model for two-dimensional, saturated groundwater flow and single component transport; homogeneous ge… more

Date: April 1, 1980

Creator: Nelson, R. W. & Schur, J. A.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Development of Site-Specific Synthetic Accelerations for Safety Assessment of DOE Facilities at Oak Ridge, Tennessee

Seismic analysis of US Department of Energy (DOE) facilities at Oak Ridge, TN, requires seismic accelerograms that have response spectra that are compatible with the site-specific design response spectra. The development of these accelerograms is accomplished by the application of the Fourier transform to compute the response spectrum of a beginning accelerogram and map it into the frequency domain. The Fourier spectrum is modified according to the difference between the computed spectra and th… more

Date: January 1, 1991

Creator: Aramayo, G. A.; Carley, T. G. & Jones, W. D.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Geochemistry of trench leachates from Maxey Flats disposal site

The results of the analysis of trench leachates collected at Maxey Flats in October 1981 are presented, and the geochemical factors controlling the trench water chemistry are discussed. In addition, results of laboratory oxidation experiments performed on trench leachates, simulating the behavior of anoxic trench waters as they encounter upon migration an oxidizing environment, are presented.

Date: January 1, 1983

Creator: Dayal, R.; Pietrzak, R.F.; Clinton, J. & Kinsley, M.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Regional flow and solute transport modeling for site suitability. Part I

The nature of regional flow systems in large sedimentary basins will largely determine the effectiveness of regional flow as a barrier to radionuclide escape from deep geologic repositories. The purpose of the work reported herein and the proposed future work is to develop a methodology for evaluating regional flow barriers by using numerical models. The Williston Basin was chosen as an archetype case for the regional modeling study. However, due to the simplified nature of the study, the resul… more

Date: December 1, 1979

Creator: Rowe, J. & Miller, I.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Geophysical logging and hydrologic testing of deep basalt flows in the Rattlesnake Hills Well Number One

Geophysical logging and hydrologic testing were conducted in the Rattlesnake Hills Well Number One located along the western boundary of the Hanford Site in south-central Washington. Three-dimensional velocity, Seisviewer and caliper logging were completed across 2,000 feet of basalt rock within the Wanapum and Grande Ronde formations. Drillstem testing focused along a 250-foot interval of the Grande Ronde Formation. Individual high- (approx. 2.7-2.9 grams per cubic centimeter) and low-density … more

Date: January 1, 1979

Creator: Gephart, R.E.; Eddy, P.A. & Deju, R.A.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Geohydrology and ground-water quality beneath the 300 Area, Hanford Site, Washington

Ground water enters the 300 Area from the northwest, west, and southwest. However, throughout most of the 300 Area, the flow is to the east and southeast. Ground water flows to the northeast only in the southern portion of the 300 Area. Variations in level of the Columbia River affected the ground-water system by altering the level and shape of the 300 Area watertable. Large quantities of process waste water, when warmed during summer months by solar radiation or cooled during winter months by … more

Date: June 1, 1979

Creator: Lindberg, J.W. & Bond, F.W.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Statistical analysis of the correlation of earthquakes with radon concentration in water from shallow wells near Oroville, California

This work is part of an investigation to determine whether a statistical relationship exists between varying radon concentration in well waters and the occurrence of nearby earthquakes. If such a dependence is verified, then certain patterns of changing radon activity may be useful for predicting earthquakes. Radon concentration in two water wells near Oroville, California, the Prosise and the Gilley wells, were compared with periodic aftershocks of the August 1, 1975, Oroville earthquake for a… more

Date: April 1, 1979

Creator: Berlin, B.

Item Type: Report

Partner: UNT Libraries Government Documents Department

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Argonne National Laboratory operations during ASCOT 1991

The Atmospheric Studies in Complex Terrain (ASCOT) field study took place during 1991 in conjunction with a model verification exercise in and around the Rocky Flats Plant (RFP) northwest of Denver, Colorado, between January 29 and February 8. As part of this exercise, Argonne (ANL) operated a portable minisodar at several locations around REP during each of the experimental nights. In addition, ANL operated permanent'' network minisodars with enhanced time resolution at Coal Creek and the Bart… more

Date: December 1, 1991

Creator: Coulter, R. L. & Martin, T. J.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Stochastic ground-water flow analysis FY-81 status report. Assessment of effectiveness of geologic isolation systems

Research was conducted at Pacific Northwest Laboratory to develop a research computational package for the stochastic analysis of ground-water flow. Both unsteady and steady-state analysis were examined, and a steady-state research code was developed for the study of stochastic processes. This report describes the theoretical development of both unsteady and steady analyses, and presents the preliminary studies undertaken to verify and exercise the encoded algorithm. The stochastic analysis of … more

Date: July 1, 1983

Creator: Kincaid, C.T.; Vail, L.W. & Devary, J.L.

Item Type: Report

Partner: UNT Libraries Government Documents Department