Publications
Educational Publications
Educational Publications
Selected publications about earthquakes In plain language.
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Integrated geologic and geophysical studies of North American continental intraplate seismicity Integrated geologic and geophysical studies of North American continental intraplate seismicity
The origin of earthquakes within stable continental regions has been the subject of debate over the past thirty years. Here, we examine the correlation of North American stable continental region earthquakes using five geologic and geophysical data sets: (1) a newly compiled age-province map; (2) Bouguer gravity data; (3) aeromagnetic anomalies; (4) the tectonic stress field; and (5)...
Authors
X. Van Lanen, Walter D. Mooney
Two lithospheric profiles across southern California derived from gravity and seismic data Two lithospheric profiles across southern California derived from gravity and seismic data
We present two detailed 2-D density transects for the crust and uppermost mantle across southern California using a linear gravity inversion technique. This technique parameterizes the crust and upper mantle as a set of blocks that are based on published geologic and seismic models. Each block can have a range of densities that are constrained where possible by borehole measurements...
Authors
T. Romanyuk, Walter D. Mooney, Shane T. Detweiler
Post-earthquake investigations-exercising the NEHRP plan and development of a virtual clearinghouse concept Post-earthquake investigations-exercising the NEHRP plan and development of a virtual clearinghouse concept
No abstract available.
Authors
Thomas L. Holzer, Christopher Rojahn, Charles Scawthorn
Liquemap: A real-time post-earthquake map of liquefaction probability Liquemap: A real-time post-earthquake map of liquefaction probability
No abstract available.
Authors
Michael J. Bennett, Luke Blair, Thomas L. Holzer, Thomas E. Noce
Assessment of ground deformation due to soil liquefaction in the San Jose, California area by using geotechnical IT Assessment of ground deformation due to soil liquefaction in the San Jose, California area by using geotechnical IT
No abstract available.
Authors
Robert E. Kayen, Keith L. Knudsen, Satoshi Nagata, Yasuo Tanaka
C-language software for computing strong ground motion metrics and seismograph self noise C-language software for computing strong ground motion metrics and seismograph self noise
No abstract available.
Authors
J.R. Evans, R.L. Nigbor, C. R. Hutt
Report of the workshop on Extreme Ground Motions at Yucca Mountain, August 23-25, 2004 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...
Authors
Thomas C. Hanks, N. A. Abrahamson, M. Board, D.M. Boore, J.N. Brune, C.A. Cornell
By
Geology, 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 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...
Authors
John O. Langbein
Physical properties of two core samples from Well 34-9RD2 at the Coso geothermal field, California 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...
Authors
C.A. Morrow, D.A. Lockner
A new class of earthquake observations A new class of earthquake observations
No abstract available.
Authors
Frederick Pollitz
Urban seismic hazard mapping for Memphis, Shelby County, Tennessee 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...
Authors
Joan Gomberg
Reply to comment by Y. Ben-Zion on “Material contrast does not predict earthquake rupture propagation direction” 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