Publications
Educational Publications
Educational Publications
Selected publications about earthquakes In plain language.
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Geodetic measurement of crustal deformation on the San Andreas, Hayward, and Calaveras faults near San Francisco, California
Analysis of a geodetic network of 115 lines crossing the San Andreas, Hayward, and Calaveras faults in the vicinity of San Francisco Bay and measured repeatedly between 1970 and 1980 has revealed details about the accommodation of relative plate motion in this area. The most striking result is that the deformation is not uniformly distributed across the area. In the east bay, along the Hayward and
Authors
W. H. Prescott, Michael Lisowski, James C. Savage
Reservoir analysis of the Denver earthquakes: A case of induced seismicity
Injection of fluid wastes into the fractured Precambrian crystalline bedrock beneath the Rocky Mountain Arsenal near Denver triggered earthquakes in the 1960's. An analysis, based on the assumption that fluid flow in the fractured reservoir can be approximated by flow in a porous medium, is presented. The configuration and hydrologic properties of the reservoir are determined from two lines of evi
Authors
Paul A. Hsieh, John D. Bredehoeft
Prismatic slip of A12O3 single crystals below 1000°C in compression under hydrostatic pressure
Alumina single crystals were compressed perpendicular to the [0001] axis at a constant strain rate between 20° and 950°C. At r>200°C, failure was suppressed by_hydrostatic pressures of 500 to 1500 MPa. Prismatic slip {1120}〈1100〉 was deduced from optical observations of the lateral surfaces and from stress‐optical features in thin sections cut from the specimens. The critical resolved shear stress
Authors
J. Castaing, J. Cadoz, Stephen H. Kirby
IASPEI workshop: Seismic modeling of laterally varying structures
During the past 10 years, significant progress has been made in the methods of collection and analysis of seismic reflection and refraction data. This progress has led to the development of new models for the structure and composition of the earth's crust, based on sophisticated analysis of numerous profiles in many areas of geologic importance. The third triannual meeting of the IASPEI (Internati
Authors
Walter D. Mooney
Seismic refraction studies of the Imperial Valley region, California— Profile models, a traveltime contour map, and a gravity model
No abstract available.
Authors
Gary S. Fuis, W. D. Mooney, J. H. Healy, G. A. McMechan, W. J. Lutter
Earth fissures and localized differential subsidence
Long linear tension cracks associated with declining groundwater levels at four sites in subsiding areas in south-central Arizona, Fremont Valley, California, and Las Vegas Valley, Nevada, occur near points of maximum convex-upward curvature in subsidence profiles oriented perpendicular to the cracks. Profiles are based on repeated precise vertical control surveys of lines of closely spaced bench
Authors
Thomas L. Holzer, Earl H. Pampeyan
Preliminary design study for a National Digital Seismograph Network
Recently, the National Research Council published a report by the Panel on National, Regional, and Local Seismograph Networks of the Committee on Seismology in which the principal recommendation was for the establishment of a national digital seismograph network (NDSN). The Panel Report (Bolt, 1980) addresses both the need and the scientific requirements for the new national network. The purpose o
Authors
Jon Peterson, Charles R. Hutt
Proceedings of Conference XIII, evaluation of regional seismic hazards and risk
The participants in the conference concluded that a great deal of useful research has been performed in the national Earthquake Hazards Reduction
Program by USGS and non-USGS scientists and engineers and that the state-of-knowledge concerning the evaluation of seismic hazards and risk has been advanced substantially. Many of the technical issues raised during the conference are less controversial
Authors
Barbara B. Charonnat
A comparison of ground response in the Los Angeles region from nuclear explosions and the 1971 San Fernando earthquake
No abstract available.
Authors
A. M. Rogers, P. A. Covington, Roger D. Borcherdt
Plastic deformation of MgO(A12O2)1·1 spinel at 0·28TM preliminary results
Prism-shaped single crystals of MgO(Al2O3)n spinel (n < 1.1) have been compressed to significant plastic strain at a temperature of 400°C (∼0·28 TM) in controlled experiments under a superimposed hydrostatic pressure of 1·4 GPa. Compression of crystals approximately parallel to <001>, <111> and <011> resulted in simple yield behaviour at axial stress differences of 1940, 3720, and 4300 MPa respect
Authors
Stephen H. Kirby, P. Veyssiere
Test and calibration of the Seismic Research Observatory
The Seismic Research Observatory (SRO) network is generating an important new data base for seismological research. The SRO systems have extended both the range and resolution of seismic measurements beyond the limits of conventional seismographs and the data are recorded in digital format making it convenient to automate processing and analysis. The SRO network now comprises 12 stations and one a
Authors
Jon Peterson, Charles R. Hutt, L. Gary Holcomb
Preliminary observations of noise spectra at the SRO and ASRO stations
The seismic noise spectra presented in this report were derived from SRO and ASRO station data for the purpose of evaluating the performance of the seismic instruments. They are also useful for constructing a spectral estimate of earth noise at a quiet site based on noise samples obtained from a network of globally distributed sites. It is hoped that the spectra will be usefull for other purposes
Authors
Jon Peterson