Conference Papers
Science Quality and Integrity
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The USGS provides unbiased, objective, and impartial scientific information upon which our audiences, including resource managers, planners, and other entities, rely.
Browse almost 5,000 conference papers authored by our scientists and refine search by topic, location, year, and advanced search.
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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. Analytical cha
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)
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 excavated mater
Authors
Brian J. Andraski, Jeffrey M. Fisher, David E. Prudic
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
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, and opalin
Authors
J. W. Harden, E. M. Taylor, M. C. Reheis, L. D. McFadden
Channel hydraulics and energy expenditure in channel adjustment; Elk Rock Reach, North Fork Toutle River, Washington
No abstract available.
Authors
Andrew Simon
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. Fourteen
Authors
Gene W. Parker, Leslie A. DeSimone
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
No abstract available.
Authors
M. Friend, G. Wobeser
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 three-dimensi
Authors
Eric D. Swain, Eliezer J. Wexler
Data standardization. The key to effective management
Effective management of the nation's water resources is dependent upon accurate and consistent hydrologic information. Before the emergence of environmental concerns in the 1960's, most hydrologic information was collected by the U.S. Geological Survey and other Federal agencies that used fairly consistent methods and equipment. In the past quarter century, however, increased environmental awarene
Authors
C. Russell Wagner
Denali Park wolf studies: Implications for Yellowstone
The Northern Rocky Mountain Wolf Recovery Plan approved by the U.S. Fish and Wildlife Service (1987) recommends re-establishment of wolves (Canis lupus) in Yellowstone National Park. Bills proposing wolf re-establishment in the Park have been introduced into the U.S. House and Senate. However, several questions have been raised about the possible effects of wolf re-establishment on other Yellowsto
Authors
L. David Mech, Thomas J. Meier, John W. Burch
Disease prevention and control in endangered avian species: Special considerations and needs
No abstract available.
Authors
M. Friend, N. J. Thomas