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Page 5263, results 131551 - 131575

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Not all publications have extents, not all extents are completely accurate
Digital data base application to porphyry copper mineralization in Alaska; case study summary
Charles M. Trautwein, David D. Greenlee, Donald G. Orr
1982, Open-File Report 82-801
The purpose of this report is to summarize the progress in use of digital image analysis techniques in developing a conceptual model for assessing porphyry copper mineral potential. The study area consists of approximately the southern one-half of the 1? by 3? Nabesna quadrangle in east-central Alaska. The digital geologic...
Performance assessments for radioactive waste repositories; the rate of movement of faults
Newell J. Trask
1982, Open-File Report 82-972
Performance assessments of mined repositories for radioactive waste require estimates of the likelihood of fault movements and earthquakes that may affect the repository and its surrounding ground water flow system. Some previous assessments have attempted to estimate the rate of formation of new faults; some have relied heavily on historic...
Hydrologic maps of the High Plains aquifer, January 1981, southwestern Kansas
Joseph M. Spinazola
1982, Water-Resources Investigations Report 82-4079
The U.S. Geological Survey furnishes maps depicting saturated thickness of the High Plains aquifer to the Southwest Kansas Groundwater Management District No. 3 through a continuing cooperative agreement.  The Groundwater Management District uses the maps to calculated a planned depletion rate of 40 percent of the saturated thickness of the...
Water quality of the tidal Potomac River and Estuary; hydrologic data report, 1981 water year, with a section on collection and analysis of chlorophyll-a
Stephen F. Blanchard, Richard H. Coupe, Joan C. Woodward
1982, Open-File Report 82-575
This report contains data on the physical and chemical properties measured in the Tidal Potomac River and Estuary during the 1981 water year. Data were collected at least weekly at five stations, and periodically at 15 stations and at two other stations near the mouth of the Potomac River in...
SEISRISK II; a computer program for seismic hazard estimation
Bernice Bender, D. M. Perkins
1982, Open-File Report 82-293
The computer program SEISRISK II calculates probabilistic ground motion values for use in seismic hazard mapping. SEISRISK II employs a model that allows earthquakes to occur as points within source zones and as finite-length ruptures along faults. It assumes that earthquake occurrences have a Poisson distribution, that occurrence rates remain...
Selected hydrologic data for northern Utah Valley, Utah, 1935-82
Cynthia L. Appel, David W. Clark, Paul E. Fairbanks
1982, Open-File Report 82-1023
This report contains hydrologic data collected in northern Utah Valley from 1935 to 1982. Northern Utah Valley is approximately the northern half of an alluvial-filled basin partly occupied by Utah Lake in north-central Utah. The report area is bounded by the Wasatch Range on the east, the Lake Mountains on...