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Page 5228, results 130676 - 130700

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Proceedings of Conference VI: Methodology for identifying seismic gaps and soon-to-break gaps: Convened under auspicies of National Earthquake Hazards Reduction Program, 25-27 May, 1978
Bryan L. Isacks, George Plafker
1978, Open-File Report 78-943
The fifth conference in the continuing series under the Earthquake Hazard Reduction Program was held at Massachusetts Institute of Technology on May 25- 27, 1978. Its theme was "Methodology for Defining Seismic Gaps and Soon-to-Break Seismic Gaps." One of the proposed strategies for acquiring critical data on earthquake prediction is...
Playback Station #2 for Cal Net and 5-day-recorder tapes
Jerry P. Eaton
1978, Open-File Report 78-542
A second system (Playback Station #2) has been set up to play back Cal Net 1" tapes and 5-day-recorder 1/2" tapes. As with the first playback system (Playback Station #1) the tapes are played back on a Bell and Howell VR3700B tape deck and the records are written out on...
Hydrologic data for urban studies in the Austin, Texas metropolitan area, 1976
Marion L. Maderak, J.D. Gordon, R.N. Mitchell
1978, Open-File Report 78-457
Hydrologic investigations of urban watersheds in Texas were begun by the U.S. Geological Survey in 1954. Studies are now in progress in Austin, Dallas and Dallas County, Fort Worth, Houston, and San Antonio.The Geological Survey, in cooperation with the Texas Department of Water Resources, began hydrologic studies in the Austin...
Directory of member organizations of the National Water Data Exchange (NAWDEX)
Melvin D. Edwards, Janet M. Nokes
1978, Open-File Report 78-872
The National Water Data Exchange (NAWDEX) is a national confederation of water-oriented organizations working to improve access to water data. It consists of member organizations from all sectors of the water-data community. This Directory provides the names, addresses, and telephone numbers of all NAWDEX member organizations and their designated NAWDEX...
A water-quality assessment of the Busseron Creek watershed, Sullivan, Vigo, Greene, and Clay counties, Indiana
Stephen E. Eikenberry
1978, Open-File Report 78-13
Chemical quality of surface water in the 237-square mile Busseron Creek watershed is significantly affected by drainage from coal mines and municipalities. Drainage from coal mines is primarily a problem of higher than normal dissolved-solids concentration, whereas, drainage from municipalities is generally a problem of bacteria and phytoplankton. Generally, the...
Geohydrology of the Antlers aquifer, southeastern Oklahoma
D.L. Hart, Robert Ellis Davis
1978, Open-File Report 78-766
The Antlers aquifer, which consists of as much as 900 feet of friable sandstone, silt, clay, and shale, crops out in area of 1,860 square miles and underlies about 4,400 square miles in southeastern Oklahoma. Precipitation ranges from 34 to 50 inches per year across the outcrop area which is...
Ground-water data for 1976-77 in Joshua Tree National Monument, California
D.J. Downing
1978, Open-File Report 78-854
A continuing study of ground water in Joshua Tree National Monument shows that during 1976-77 water levels fluctuated seasonally; slight declines were detected in the Oasis of Mara and the Pinto Basin. Water quality was generally good, with a high concentration of fluoride in one well in the southern part...
Summary of the estimated iron resources of the Marquette and Gogebic Iron Ranges of Michigan
William F. Cannon
1978, Open-File Report 78-153
The U. S. Geological Survey in cooperation with the Geological Survey Division of the Michigan Department of Natural Resources has recently completed detailed studies of iron-bearing rocks in the Marquette and Gogebic iron ranges in the northern peninsula of Michigan. The study included mapping the surface distribution of the iron-bearing...
Water resources of Camas Prairie, south-central Idaho
H.W. Young
1978, Water-Resources Investigations Report 78-82
Ground-water pumpage in Camas Prairie, Idaho, for irrigation and municipal supplies totaled nearly 9,500 acre-feet in 1977. Declines of pressure head in the artesian aquifer have ranged from 3 to 12 feet since 1974 when increased ground-water pumping began. A comparison of water-level measurements made in September 1957 and September...
Water resources data for Florida, water year 1977; Volume 1. Northeast Florida
Water Resources Division, U.S. Geological Survey
1978, Water Data Report FL-77-1
Water resources data for the 1977 water year for northeast Florida consist of records of stage, discharge, and water quality of streams; elevation and water quality of lakes and reservoirs; water-levels and water quality of wells; and discharge and water quality of springs. Additional water data were collected at various...
Field determination of vertical permeability to air in the unsaturated zone
Edwin P. Weeks
1978, Professional Paper 1051
The vertical permeability to air of layered materials in the unsaturated zone may be determined from air pressure data obtained at depth during a period when air pressure is changing at land surface. Such data may be obtained by monitoring barometric pressure with a microbarograph or surveying altimeter and simultaneously...