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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Geochemical evaluation of coal from the Tertiary Usibelli Group, Usibelli mine, Alaska, one of the lowest sulfur coals mined in the United States Geochemical evaluation of coal from the Tertiary Usibelli Group, Usibelli mine, Alaska, one of the lowest sulfur coals mined in the United States
The Nenana coal basin extends 240 km in length and 1.5-50 krn in width along the northern foothills of the Alaska Range in central Alaska. Located at the western end of the Nenana basin is the Usibelli Coal Mine, approximately 120 km southwest of Fairbanks. The Tertiary Usibelli Group consists of coal-bearing fluvial and lacustrine sedimentary deposits that were derived from the Yukon...
Authors
Ronald H. Affolter, Gary D. Stricker, Richard G. Stanley
Deep tunnel detection using crosshole radar tomography Deep tunnel detection using crosshole radar tomography
As part of continuing research aimed at the detection of subsurface tunnels and voids, the U.S. Bureau of Mines recently completed a cooperative study with the U.S. Geological Survey at a surface gold mine in the Black Hills mining district of South Dakota. The occurrence of older, poorly mapped mine workings in the section create a consistent health and safety concern for mine employees...
Authors
Ken Hauser, Michael Jackson, John Lane, Richard Hodges
Infectious and parasitic diseases of the gray wolf and their potential effects on wolf populations in North America Infectious and parasitic diseases of the gray wolf and their potential effects on wolf populations in North America
Numerous infections and parasitic diseases have been reported for the gray wolf, including more than 10 viral, bacterial, and mycotic disease and more than 70 species of helminths and ectoparasites. However, few studies have documented the role of diseases in population dynamics. Disease can affect wolf populations directly by causing mortality or indirectly by affecting physiological...
Authors
C. J. Brand, M.J. Pybus, W.B. Ballard, R. O. Peterson
A review of the sensory organs in wolves and their importance to life history A review of the sensory organs in wolves and their importance to life history
No abstract available.
Authors
C. S. Asa, L. David Mech
Acid Rain Acid Rain
Although acid rain is fading as a political issue in the United States and funds for research in this area have largely disappeared, the acidity of rain in the Eastern United States has not changed significantly over the last decade, and it continues to be a serious environmental problem. Acid deposition (commonly called acid rain) is a term applied to all forms of atmospheric deposition...
Authors
Owen P. Bricker, Karen C. Rice
Adult production of fall Chinook salmon reared in net-pens in backwaters of the Columbia River Adult production of fall Chinook salmon reared in net-pens in backwaters of the Columbia River
No abstract available
Authors
J.W. Beeman, J.F. Novotny
Advanced instrumentation for the collection, retrieval, and processing of urban stormwater data Advanced instrumentation for the collection, retrieval, and processing of urban stormwater data
The U.S. Geological Survey, in cooperation with the City of Charlotte and Mecklenburg County, North Carolina, has developed a data-collection network that uses advanced instrumentation to automatically collect, retrieve, and process urban stormwater data. Precipitation measurement and water-quality networks provide data for (1) planned watershed simulation models, (2) early warning of...
Authors
Jerald B. Robinson, Jerad D. Bales, Wendi S. Young
Analysis of long-term sulfate and nitrate budgets in a Rocky Mountain basin Analysis of long-term sulfate and nitrate budgets in a Rocky Mountain basin
No abstract available.
Authors
Jill Baron, E.J. Allstott, B. K. Newkirk
Applications of isotopes to tracing sources of solutes and water in shallow systems Applications of isotopes to tracing sources of solutes and water in shallow systems
New awareness of the potential danger to water supplies posed by the use of agricultural chemicals has focused attention on the nature of groundwater recharge and the mobility of various solutes, especially nitrate and pesticides, in shallow systems. A better understanding of hydrologic flowpaths and solute sources is required to determine the potential impact of sources of contamination...
Authors
Carol Kendall, David P. Krabbenhoft
Areal extent of freshwater from an experimental release of Mississippi River Water into Lake Pontchartrain, Louisiana, May 1994 Areal extent of freshwater from an experimental release of Mississippi River Water into Lake Pontchartrain, Louisiana, May 1994
The effects of the release of freshwater from the Mississippi river into the Lake Pontchartrain was evaluated. The study determined the delineation of the areal extent of the freshwater plume in the lake, intensively sampled lake and river water and bed sediment to determine the effects on water quality in the lake, and performed a dye study to determine the mixing characteristics of the...
Authors
Brian E. McCallum
Assessment of information on ground-water/surface-water interactions in the northern midcontinent Assessment of information on ground-water/surface-water interactions in the northern midcontinent
Ground-water/surface-water interactions are important to the hydrology of shallow aquifers, streams, lakes, and wetlands. Information on ground-water/surface-water interactions in the northern midcontinent was assessed. The ground-water/surface-water interactions in physiographic and climatic areas that contain many wetlands differed from the interactions in areas that consisted...
Authors
Michael L. Strobel
Band recoveries of diurnal raptors banded in the Marin Headlands, Marin County, California Band recoveries of diurnal raptors banded in the Marin Headlands, Marin County, California
No abstract available at this time
Authors
K.L. Scheuerman, M.A. Weeks, J. A. Howell