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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USE OF SPACE TECHNOLOGY IN FEDERALLY FUNDED LAND PROCESSES RESEARCH IN THE UNITED STATES. USE OF SPACE TECHNOLOGY IN FEDERALLY FUNDED LAND PROCESSES RESEARCH IN THE UNITED STATES.
A review of the use of space technology in federally funded earth science research in the US was carried out in 1985 by the President's Office of Science and Technology Policy. Five departments and three independent agencies, representing the primary earth science research agencies in the Federal government, participated in the review. The review by the subcommittee indicated that, while...
Authors
G. A. Thorley, R. McArdle
USGS NATIONAL MAPPING PROGRAM IN ALASKA--A STATUS REPORT. USGS NATIONAL MAPPING PROGRAM IN ALASKA--A STATUS REPORT.
The U. S. Geological Survey has been involved in mapping in Alaska since the late 1800's. The initial mapping projects were principally in support of geologic or hydrologic studies. In the late 1940's, responsibility for Alaska mapping was assigned to the Geological Survey's Rocky Mountain Mapping Center and a comprehensive and systematic mapping effort was undertaken. This effort was...
Authors
Bruce Y. Mckenzie, Lowell E. Starr
VISCOPLASTIC FLUID MODEL FOR DEBRIS FLOW ROUTING. VISCOPLASTIC FLUID MODEL FOR DEBRIS FLOW ROUTING.
This paper describes how a generalized viscoplastic fluid model, which was developed based on non-Newtonian fluid mechanics, can be successfully applied to routing a debris flow down a channel. The one-dimensional dynamic equations developed for unsteady clear-water flow can be used for debris flow routing if the flow parameters, such as the momentum (or energy) correction factor and the
Authors
Cheng-lung Chen
Development of a computerized wetlands mapping data base for use in section 404 jurisdictional determinatins in San Francisco Bay Development of a computerized wetlands mapping data base for use in section 404 jurisdictional determinatins in San Francisco Bay
Development and habitat alteration in the San Francisco Bay-Delta system have placed the remaining wetlands in jeopardy. The Bay-Delta wetlands will be mapped in a joint project of the U. S. Environmental Protection Agency (EPA) and the U. S. Fish and Wildlife Service (FWS). Maps at a 1:24,000 scale will be produced for the entire study area. High altitude color infrared photography from...
Authors
Patrick J. Cotter, James B. Johnston, Millicent L. Quammen, Dennis Peters
Analysis of colonial wading bird habitat in coastal Louisiana Analysis of colonial wading bird habitat in coastal Louisiana
No abstract available.
Authors
R.D. Greer, C.E. Keller
A national perspective of Louisiana's coastal wetlands loss A national perspective of Louisiana's coastal wetlands loss
No abstract available
Authors
Robert E. Stewart
Volcanic rocks as sources of uranium: Current perspective and future directions Volcanic rocks as sources of uranium: Current perspective and future directions
No abstract available.
Authors
Robert A. Zielinski
Automated derivation of hydrologic basin characteristics from digital elevation model data Automated derivation of hydrologic basin characteristics from digital elevation model data
Digital elevation model (DEM) data in a raster format can be used to automatically derive the drainage characteristics of an area. A procedure has been designed that is capable of operating on matrices of elevation data having no algorithmically imposed size limit, while performing within the resolution and accuracy tolerances of the DEM data. Each cell is processed as the center of a 3-...
Authors
Susan K. Jenson
A relational approach to vector data structure conversion A relational approach to vector data structure conversion
The proliferation of geographic information systems and digital data bases is creating a need for efficient methods to convert data from one spatial data structure to another. One approach is to create ad hoc interfaces, with a potential of N(N-1) interfaces for N data structures. Using an intermediate data structure, at most 2N interfaces are required. An intermediate relational data...
Authors
Jan W. van Roessel, Eugene A. Fosnight
Simulation of ground-water flow in the Prairie du Chien-Jordan aquifer and relation to ground-water contamination by coal-tar derivatives, St. Louis Park, Minnesota Simulation of ground-water flow in the Prairie du Chien-Jordan aquifer and relation to ground-water contamination by coal-tar derivatives, St. Louis Park, Minnesota
No abstract available.
Authors
J. R. Stark, M. F. Hult
Collapse and erosion at the low-level radioactive-waste burial site near Sheffield, Illinois Collapse and erosion at the low-level radioactive-waste burial site near Sheffield, Illinois
No abstract available.
Authors
J. R. Gray, L. L. McGovern
On the interpretation of satellite-derived gravity and magnetic data for studies of crustal geology and metallogenesis On the interpretation of satellite-derived gravity and magnetic data for studies of crustal geology and metallogenesis
Satellite-derived global gravity and magnetic maps have been shown to be useful in large-scale studies of the Earth's crust, despite the relative infancy of such studies. Numerous authors have made spatial associations of gravity or magnetic anomalies with geological provinces. Gravimetric interpretations are often made in terms of isostasy, regional variations of density, or of geodesy...
Authors
David A. Hastings