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.
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Detecting change in water quality from implementation of limestone treatment systems in a coal-minded watershed Detecting change in water quality from implementation of limestone treatment systems in a coal-minded watershed
During 1996-97, a variety of limestone-based treatment systems were implemented to neutralize acidic mine drainage and reduce the transport of dissolved metals in the northern part of the Swatara Creek watershed, which drains a 43-mi2 (112-km2) area in the Southern Anthracite Field upstream from Ravine, Pa. Since 1996, the current project has monitored water quality upstream and...
Authors
Charles A. Cravotta, Jeffrey B. Weitzel
Relations among sulfate, metals, sediment, and streamflow data for a stream draining a coal-mined watershed in East-Central Pennsylvania Relations among sulfate, metals, sediment, and streamflow data for a stream draining a coal-mined watershed in East-Central Pennsylvania
Streamflow and water-quality data for the northern part of Swatara Creek, which drains a 112-km2 area in the Southern Anthracite Field of east-central Pennsylvania, indicate iron, copper, and lead, and to a lesser extent manganese and zinc, are transported with suspended particles during stormflow conditions. During stormflow conditions, concentrations of these constituents typically...
Authors
Charles A. Cravotta
Significance of geologic and biostratigraphic relations between the overlap assemblage and Havallah sequence, southern Shoshone Range, Nevada Significance of geologic and biostratigraphic relations between the overlap assemblage and Havallah sequence, southern Shoshone Range, Nevada
No abstract available.
Authors
Thomas E. Moore, B.L. Murchey, A. G. Harris
Sediment oxygen demand rates in the Mangrove Lagoon, Benner Bay, and Vessup Bay in southeastern St. Thomas, U.S. Virgin Islands Sediment oxygen demand rates in the Mangrove Lagoon, Benner Bay, and Vessup Bay in southeastern St. Thomas, U.S. Virgin Islands
No abstract available.
Authors
Orlando Ramos-Gines
National vegetation mapping for fire applications National vegetation mapping for fire applications
No abstract available.
Authors
Donald O. Ohlen, Denise M. Akob, R.E. Burgan
Data and applications for study of the water cycle in Africa Data and applications for study of the water cycle in Africa
There are a number data set development, data dissemination, and applications activities at the U.S. Geological Survey (USGS) that contribute to the study of the water cycle in Africa. Some of these stem from global change research initiatives, while others are the result of technical assistance provided to international development and humanitarian assistance projects. Data themes...
Authors
James Verdin
An effective filter for removal of production artifacts in U.S. Geological Survey 7.5-minute digital elevation models An effective filter for removal of production artifacts in U.S. Geological Survey 7.5-minute digital elevation models
Many digital elevation models (DEM) produced by the U.S. Geological Survey suffer from the presence of striping artifacts, which limit their utility. The most common approaches to filtering the affected DEMs rely on simple low-pass filters that blur fine details. A new filtering algorithm has been developed that isolates the stripes by applying a low-pass filter along the axis of the...
Authors
Michael J. Oimoen
Geospatial data access from the U.S. Geological Survey Geospatial data access from the U.S. Geological Survey
No abstract available.
Authors
John Faundeen, Patricia Johnson
Nutrients and pesticides in the Mississippi River Basin, Minnesota and Wisconsin, 1971-94 Nutrients and pesticides in the Mississippi River Basin, Minnesota and Wisconsin, 1971-94
No abstract available.
Authors
J. R. Stark, J. D. Fallon, S. E. Kroening
The Goldfield mining district, Nevada: an acid sulfate bonanza gold deposit The Goldfield mining district, Nevada: an acid sulfate bonanza gold deposit
This paper provides an introduction to the geology, ore deposits, and fluid geochemistry of the Goldfield mining district, Esmerelda and Nye Counties, Nevada. Also included is a brief interpretation of mineral maps of the western half of the district which were recently produced from remotely sensed imagery acquired by the Airborne Visible Infrared Imaging Spectrometer (AVIRIS) systems...
Authors
Barnaby W. Rockwell
Constraints on timing and rates of late Cenozoic incision by the Colorado River in Glenwood Canyon, Colorado: A preliminary synopsis Constraints on timing and rates of late Cenozoic incision by the Colorado River in Glenwood Canyon, Colorado: A preliminary synopsis
No abstract available.
Authors
Robert M. Kirkham, Michael J. Kunk, Bruce Bryant, Randall K. Streufert