Conference Papers
Science Quality and Integrity
The USGS provides unbiased, objective, and impartial scientific information upon which our audiences, including resource managers, planners, and other entities, rely.
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.
Filter Total Items: 5346
Herbicides and metabolites in surface and ground water in the midwestern United States
No abstract available.
Authors
D. A. Goolsby, E.M. Thurman, D.W. Kolpin, M. T. Meyer
Occurrence of herbicides and metabolites in surface water, ground water, and rainwater in the midwestern United States
No abstract available.
Authors
D. A. Goolsby, E.M. Thurman, D.W. Kolpin, William A. Battaglin
Dynamic mapping of urban regions: Growth of the San Francisco/Sacramento region
A methodology has been developed to document the tremendous growth large metropolitan regions have experienced over time. A GIS was used to compile a database of urbanization for the San Francisco/ Sacramento urban region spanning 140 years. Historical records, USGS topographic maps, aerial photographs, and Landsat imagery were used to identify the urban spatial extent. Digital transportation data
Authors
Cindy Bell, William Acevedo, Janis Taylor
Microwave radiometers and their application in field and aircraft campaigns for remote sensing of land and water surfaces
The paper presents an overview of the scientific investigations and practical applications of a group of specialists working in the Institute of Radioengineering and Electronics of the Russian Academy of Sciences (IRE RAS) with their partners in Russia and the USA in the area of passive microwave remote sensing as applied to the study of soil, vegetation and water bodies. Applications that are des
Authors
A.M. Shutko, A.A. Haldin, E.P. Novichikhin, A.A. Mil'shin, S.P. Golovachev, A.G. Grankov, V.G. Mishanin, T.J. Jackson, B.J. Logan, G.B. Tilley, E.W. Ramsey, H. Pirchner
Spatial variability of streambed properties related to stream-channel geomorphology, and base flow of a gaining stream in glaciated north-central Minnesota
No abstract available.
Authors
T.A. Petersen, D.S. Armstrong, J. R. Stark, D. S. Hansen
Transport of agricultural chemicals to ground water, Princeton, Minnesota, 1991-93
No abstract available.
Authors
G. N. Delin
Water quality under a ridge-tilled, corn/soybean farming system
No abstract available.
Authors
R.H. Dowdy, J.A. Lamb, W.L. Albus, D.E. Clay, D.R. Lowery, G. N. Delin, J. L. Anderson
A regional monitoring network to investigate the occurrence of agricultural chemicals in near-surface aquifers of the midcontinental USA
Previous state and national surveys conducted in the mid-continental USA have produced a wide range in results regarding the occurrence of agricultural chemicals in groundwater. At least some of these differences can be attributed to inconsistencies between the surveys, such as different analytical reporting limits. The US Geological Survey has designed a sampling network that is geographically a
Authors
D.W. Kolpin, D. A. Goolsby
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-Tanana Uplan
Authors
Ronald H. Affolter, Gary D. Stricker, Richard G. Stanley
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 as well a
Authors
Ken Hauser, Michael Jackson, John Lane, Richard Hodges