Publications
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Report of the workshop on Extreme Ground Motions at Yucca Mountain, August 23-25, 2004
This Workshop has its origins in the probabilistic seismic hazard analysis (PSHA) for Yucca Mountain, the designated site of the underground repository for the nation's high-level radioactive waste. In 1998 the Nuclear Regulatory Commission's Senior Seismic Hazard Analysis Committee (SSHAC) developed guidelines for PSHA which were published as NUREG/CR-6372, 'Recommendations for probabilistic seis
Authors
T. C. Hanks, N. A. Abrahamson, M. Board, D. M. Boore, J.N. Brune, C.A. Cornell
By
Energy and Minerals Mission Area, Natural Hazards Mission Area, Earthquake Hazards Program, Energy Resources Program, Mineral Resources Program, National Laboratories Program, Science and Decisions Center, Earthquake Science Center, Geologic Hazards Science Center, Geology, Minerals, Energy, and Geophysics Science Center
Evaluation of some software measuring displacements using GPS in real-time
For the past decade, the USGS has been monitoring deformation at various locations in the western United States using continuous GPS. The main focus of these measurements are estimates of displacement averaged over one day. Essentially, these consist of recording at 30 seconds intervals the carrier-frequency phase-data (equivalent to travel-time) between a GPS receiver and the GPS satellite networ
Authors
John Langbein
Physical properties of two core samples from Well 34-9RD2 at the Coso geothermal field, California
The Coso geothermal field, located along the Eastern California Shear Zone, is composed of fractured granitic rocks above a shallow heat source. Temperatures exceed 640 ?F (~338 ?C) at a depth of less than 10000 feet (3 km). Permeability varies throughout the geothermal field due to the competing processes of alteration and mineral precipitation, acting to reduce the interconnectivity of faults an
Authors
C.A. Morrow, D. A. Lockner
Urban seismic hazard mapping for Memphis, Shelby County, Tennessee
Earthquakes cannot be predicted, but scientists can forecast how strongly the ground is likely to shake as a result of an earthquake. Seismic hazard maps provide one way of conveying such forecasts. The U.S. Geological Survey (USGS), which produces seismic hazard maps for the Nation, is now engaged in developing more detailed maps for vulnerable urban areas. The first set of these maps is now avai
Authors
Joan Gomberg
Reply to comment by Y. Ben-Zion on “Material contrast does not predict earthquake rupture propagation direction”
No abstract available.
Authors
Ruth A. Harris, Steven M. Day
Near-Field Receiving Water Monitoring of trace metals and a benthic community near the Palo Alto Regional Water Quality Control Plant in South San Francisco Bay, California: 2005
Trace elements in sediment and the clam Macoma petalum (formerly reported as Macoma balthica (Cohen and Carlton 1995)), clam reproductive activity and benthic, macroinvertebrate community structure are reported for a mudflat one kilometer south of the discharge of the Palo Alto Regional Water Quality Control Plant in South San Francisco Bay. This report includes data collected for the period Janua
Authors
Daniel J. Cain, Francis Parcheso, Janet K. Thompson, Samuel N. Luoma, Allison H. Lorenzi, Edward Moon, Michelle K. Shouse, Michelle I. Hornberger, Jessica Dyke
Subsurface structure of the East Bay Plain ground-water basin: San Francisco Bay to the Hayward fault, Alameda County, California
The area of California between the San Francisco Bay, San Pablo Bay, Santa Clara Valley, and the Diablo Ranges (East Bay Hills), commonly referred to as the 'East Bay', contains the East Bay Plain and Niles Cone ground-water basins. The area has a population of 1.46 million (2003 US Census), largely distributed among several cities, including Alameda, Berkeley, Fremont, Hayward, Newark, Oakland, S
Authors
R. D. Catchings, J. W. Borchers, M. R. Goldman, G. Gandhok, D. A. Ponce, C. E. Steedman
Seismic constraints and coulomb stress changes of a blind thrust fault system, 2: Northridge, California
We review seismicity, surface faulting, and Coulomb stress changes associated with the 1994 Northridge, California, earthquake. All of the observed surface faulting is shallow, extending meters to tens of meters below the surface. Relocated aftershocks reveal no seismicity shallower than 2 km depth. Although many of the aftershocks lie along the thrust fault and its up-dip extension, there are als
Authors
Ross S. Stein, Jian Lin
Seismic constraints and Coulomb stress changes of a blind thrust fault system, 1: Coalinga and Kettleman Hills, California
This report reviews the seismicity and surface ruptures associated with the 1982-1985 earthquake sequence in the Coalinga region in California, and the role of Coulomb stress in triggering the mainshock sequence and aftershocks. The 1982-1985 New Idria, Coalinga, and Kettleman Hills earthquakes struck on a series of west-dipping, en echelon blind thrust faults. Each earthquake was accompanied by u
Authors
Jian Lin, Ross S. Stein
Geophysical studies of the Crump Geyser known geothermal resource area, Oregon, in 1975
The U.S. Geological Survey (USGS) conducted geophysical studies in support of the resource appraisal of the Crump Geyser Known Geothermal Resource Area (KGRA). This area was designated as a KGRA by the USGS, and this designation became effective on December 24, 1970. The land classification standards for a KGRA were established by the Geothermal Steam Act of 1970 (Public Law 91-581). Federal lands
Authors
Donald Plouff
Halfway through Reid's cycle and counting
100 years ago, San Francisco was hit by a great earthquake. The subsequent simple models of cyclical fault rupture have not yielded useful pre-dictions; long-term study of seismic mechanisms are still required
Authors
William L. Ellsworth