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Page 4879, results 121951 - 121975

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Peak horizontal acceleration and velocity from strong motion records including records from the 1979 Imperial Valley, California, earthquake
William B. Joyner, David M. Boore, Ronald L. Porcella
1981, Open-File Report 81-365
We have taken advantage of the recent increase in strong-motion data at close distances to derive new attenuation relations for peak horizontal acceleration and velocity. Acceleration data from 183 recordings of 24 earthquakes and velocity data from 62 recordings of 10 earthquakes have been used. This new analysis uses a...
Hydrologic monitoring in the coal fields of central Utah, August 1978-September 1979
Gregory C. Lines, Gerald G. Plantz
1981, Open-File Report 81-138
Surface-water quantity and quality were observed at 12 gaging stations downstream from mined and lease areas in the Wasatch Plateau, Book Cliff's, and Emery coal fields in central Utah. Measurements of base flow were made at 52 additional sites in the region. The report describes the hydrologic setting of this...
Geologic map of the Troublesome Roadless Area, McCreary County, Kentucky
W. R. Sigleo, A. H. Randall
1981, Miscellaneous Field Studies Map 1341-A
The Troublesome Roadless Area is composed of six tracts of land and contains 2,943 acres (fig. 1). The largest tract of the study area, located 13 mi southwest of Stearns, Ky., is accessible from that town via State Route 92 to Hill Top, and . then southwestwatd along country roads....
Map showing bathymetry and aquatic plants of Lake Waramaug, Connecticut
Kenneth P. Kulp
1981, Open-File Report 81-477
The Bathymetry of Lake Waramaug is shown at 5-foot intervals, and the location and identification of significant concentrations of aquatic plants is indicated. The bathymetry shows the lake to be relatively steep-sided and flat-bottomed, with a maximum depth of between 40 and 45 feet. Aquatic plants were confined to the...
Hydrologic and morphologic changes in channels of the Platte River basin: A historical perspective
T.R. Eschner, R. F. Hadley, K.D. Crowley
1981, Open-File Report 81-1125
The channels of the Platte River and its major tributaries, the South Platte and North Platte Rivers in Colorado, Wyoming, and Nebraska, have undergone major changes in hydrologic regime and morphology since 1860. These changes are attributed here to agricultural, municipal, and industrial water use.Although water-resource development varied temporally throughout...
Status of Regional Gravity Project, Kingdom of Saudi Arabia, as of 1 January, 1979
M. E. Gettings
1981, Open-File Report 81-165
Regional gravity data have now been obtained for approximately 33 percent of the area of the Arabian Shield, associated harrat areas, and the Red Sea coastal plain. Virtually no surveys have been done on the Phanerozoic platform around the edges of the shield, and although regional gravity coverage is available...
Hydrologic data for urban storm runoff from nine sites in the Denver metropolitan area, Colorado
Johnnie W. Gibbs
1981, Open-File Report 81-682
Urban storm-runoff data were collected April through September 1980, from nine urbanrunoff sites in the Denver metropolitan area, and are presented in this report. The sites consist of two single-family residential areas, two multi-family residential areas, one commercial area (shopping center), one mixed commercial and multi-family residential area, one native...