Conference Papers
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Alternative method to Mariotte reservoir system for maintaining constant hydraulic pressure Alternative method to Mariotte reservoir system for maintaining constant hydraulic pressure
Several problems with the Mariotte reservoir system were discovered when it was used to apply a constant water pressure as a boundary condition for a prolonged period. The constant-pressure boundary condition is required for some laboratory experiments to study water flow through porous media. The observed problems were caused by temperature and barometric-pressure fluctuations while the...
Authors
Falah Thamir
Assessing the effects of microbial metabolism and metabolities on reservoir pore structure Assessing the effects of microbial metabolism and metabolities on reservoir pore structure
The effect of microbial treatment on pore structure of sandstone and carbonatereservoirs was determined. Understanding how different bacterial strains and their metabolic bioproducts affect reservoir pore structure will permit the prudent application of microorganisms for enhanced oil recovery. The microbial strains tested included Clostridium acetobutylicum, a polymer-producing Bacillus...
Authors
E.O. Udegbunam, J.P. Adkins, R.M. Knapp, M.J. McInerney, R.S. Tanner
Assessment of fracture-sampling techniques for laboratory tests on core Assessment of fracture-sampling techniques for laboratory tests on core
As part of the site characterization work to be done at Yucca Mountain in Nye County, Nevada, a candidate site for the first mined-geologic repository for high-level nuclear waste, laboratory tests are proposed to evaluate fluid flow in single fractures. Laboratory and onsite tests were conducted to develop methods for collecting rock-core samples containing single fractures for the...
Authors
G.R. Severson, J.M. Boernge
Automated urban change detection using scanned cartographic and satellite image data Automated urban change detection using scanned cartographic and satellite image data
The objective of this study was to develop a digital procedure to measure the amount of urban change that has occurred in an area since the publication of its corresponding 1:24,000-scale topographic map. Traditional change detection techniques are dependent upon the visual comparison of high-altitude aerial photographs or, more recently, satellite image data to a corresponding map...
Authors
Jeffrey D. Spooner
Beatty, Nevada: A section in U.S. Geological Survey research in radioactive waste disposal - Fiscal years 1986-1990 (WRI 91-4084) Beatty, Nevada: A section in U.S. Geological Survey research in radioactive waste disposal - Fiscal years 1986-1990 (WRI 91-4084)
A low-level radioactive-waste disposal facility in the Amargosa Desert of Nevada, about 17 km southeast of Beatty and 169 km northwest of Las Vegas, has been operating since 1962. This was the first commercially operated radioactive waste disposal facility in the United States. Wastes at the facility are emplaced in 2 to 15-m deep trenches and covered by backfilling with previously...
Authors
Brian J. Andraski, Jeffrey M. Fisher, David E. Prudic
Body size and foraging behavior in birds Body size and foraging behavior in birds
No abstract available.
Authors
R. Ian Goudie, John F. Piatt
Calcic, gypsic, and siliceous soil chronosequences in arid and semiarid environments Calcic, gypsic, and siliceous soil chronosequences in arid and semiarid environments
We studied three soil chronosequences in the western USA to compare the development of calcic, gypsic, and siliceous soils through time. We compared calcic soils from the Silver Lake playa, southeastern California, gypsic-calcic soils from the Kane Fans in Big Horn County, Wyoming, and siliceous-calcic soils from Forty-mile Wash in southwestern Nevada. In these areas, carbonate, gypsum...
Authors
J.W. Harden, E. M. Taylor, M.C. Reheis, L. D. McFadden
Characteristics of low-slope streams that affect O2 transfer rates Characteristics of low-slope streams that affect O2 transfer rates
Multiple-regression techniques were used to derive the reaeration coefficients estimating equation for low sloped streams: K2 = 3.83 MBAS-0.41 SL0.20 H-0.76, where K2 is the reaeration coefficient in base e units per day; MBAS is the methylene blue active substances concentration in milligrams per liter; SL is the water-surface slope in foot per foot; and H is the mean-flow depth in feet...
Authors
Gene W. Parker, Leslie A. DeSimone
Collected papers from the sixth annual meeting of the society for organic petrology Collected papers from the sixth annual meeting of the society for organic petrology
[No abstract available]
Authors
R.D. Harvey, J.C. Crelling, D.D. Kaegi
Concluding remarks: Disease ecology and the conservation of avian species Concluding remarks: Disease ecology and the conservation of avian species
No abstract available.
Authors
M. Friend, G. Wobeser
Coupled surface-water and ground-water model Coupled surface-water and ground-water model
In areas with dynamic and hydraulically well connected ground-water and surface-water systems, it is desirable that stream-aquifer interaction be simulated with models of equal sophistication and accuracy. Accordingly, a new, coupled ground-water and surface-water model was developed by combining the U.S. Geological Survey models MODFLOW and BRANCH. MODFLOW is the widely used modular...
Authors
Eric D. Swain, Eliezer J. Wexler