Skip to main content
U.S. flag

An official website of the United States government

Dot gov

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Https

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Search Results

165928 results.

Alternate formats: RIS file of the first 3000 search results  |  Download all results as CSV | TSV | Excel  |  RSS feed based on this search  |  JSON version of this page of results

Page 5264, results 131576 - 131600

Show results on a map

Publication Extents

Not all publications have extents, not all extents are completely accurate
Summary of the water resources of Puerto Rico
H.J. McCoy
1978, Open-File Report 78-971
The U.S. Department of Commerce (DOC) is the lead agency in the Federal Interagency Study of the Economy of Puerto Rico. At the request of DOC the U.S. Geological Survey is providing a discussion of the water resources of the island for inclusion in the study's section on macroeconomic assessment.Two...
Development of a technique for the rapid estimation of earthquake losses
Sylvester Theodore Algermissen, M.B. McGrath, S.L. Hanson
1978, Open-File Report 78-440
A simple, general technique has been outlined for the rapid, approximate estimation of building losses resulting from ground shaking during earthquakes. The technique has been applied to the San Francisco Bay area. Ground shaking, ground failures of various kinds, surface faulting, tsunamis, and earthquake induced fires are all responsible for...
Reconnaissance evaluation of water resources for hydraulic coal mining, Crested Butte coal field, Gunnison County, Colorado
William M. Alley, Linda J. Britton, Elaine L. Boyd
1978, Open-File Report 78-938
Available surface-water and ground-water data were compiled for the parts of the Gunnison River basin in and adjacent to the Crested Butte coal field. The data were evaluated to assess the quantity and quality of water resources in the area for use in hydraulic coal mining.Based on discharge records, surface-water...
Reconnaissance evaluation of water resources for hydraulic coal mining, Grand Hogback coal field: Garfield and Rio Blanco Counties, Colorado
William M. Alley, Linda J. Britton, Elaine L. Boyd
1978, Open-File Report 78-885
Surface-water and ground-water data were compiled for the parts of the Colorado River and the White River basins in and adjacent to the Grand Hogback coal field. The data were evaluated to assess the quantity and quality of water resources available in the area for use in hydraulic coal mining....
Mineral exploration, Mahd adh Dhahab District, Kingdom of Saudi Arabia
Ronald G. Worl
1978, Open-File Report 78-1073
Mahd adh Dhahab is the largest of numerous ancient gold mines scattered through the Precambrian shield of Saudi Arabia and the only one with recent production. During the period 1939-54, 765,768 fine ounces of gold and 1,002,029 ounces of silver were produced from the mines by the Saudi Arabian Mining...
Uranium and phosphate resources in the Cooper Formation of the Charleston region, South Carolina
Eric R. Force, G. S. Gohn, L.M. Force, B.B. Higgins
1978, Open-File Report 78-586
Phosphate deposits formerly exploited in the Charleston district were formed by weathering and reworking of the Cooper Formation (Eocene and Oliogcene). Previous workers have shown that unusual concentrations of uranium occur in phosphate-rich nodular material formed during subareal weathering. We found that the old mining district is on an erosional...
Geologic map of the Mare Australe area of Mars
C.D. Condit, L.A. Soderblom
1978, IMAP 1076
The south polar region of Mars is among the most geologically diverse on the planet. The areas is within the heavily cratered hemisphere of Mars but is <span class="NormalTextRun...
Comparison of the radioactive and modified techniques for measurement of stream reaeration coefficients
R. E. Rathbun, R. Stephen Grant
1978, Water-Resources Investigations Report 78-68
The radioactive and modified tracer techniques were used to measure the reaeration coefficients of two reaches each of Black Earth Creek and the Madison Effluent Channel near Madison, Wis. Comparison of the results showed that coefficients measured with the modified technique ranged from -8.96 to +3.61 and from +15.7 to...
Analysis of urban storm-water quality for seven basins near Portland, Oregon
Timothy L. Miller, Stuart W. McKenzie
1978, Open-File Report 78-662
Over a 1.5-year period, water-quality data were collected for seven small drainage basins in urban aeas of Portland, Oreg. Analysis of the data followed three approaches. First, the constituent concentrations were analyzed. Average concentrations of suspended sediment, settleable solids, and fecal coliform bacteria generally exceeded levels expected for secondary waste-treatment...
Allocation of subsamples of Apollo 17 lunar rocks from the boulder at station 7, for study by the International Consortium
Jean A. Minkin, Carolyn L. Thompson, E. C. T. Chao
1978, Open-File Report 78-511
The International Consortium was organized, under the leadership of E. C. T. Chao, to conduct a systematic interdisciplinary study of four lunar rock samples (77135, 77115, 77075 and 77215) collected by the Apollo 17 astronauts as representative of the four lithologies they recognized in the boulder at station 7. Tables...
Low-cost computer classification of land cover in the Portland area, Oregon, by signature extension techniques
Leonard Gaydos
1978, Open-File Report 78-186
Computer-aided techniques for interpreting multispectral data acquired by Landsat offer economies in the mapping of land cover. Even so, the actual establishment of the statistical classes, or "signatures," is one of the relatively more costly operations involved. Analysts have therefore been seeking cost-saving signature extension techniques that would accept training...