Publications
Filter Total Items: 2585
Crustal structure of mainland China from deep seismic sounding data
Since 1958, about ninety seismic refraction/wide angle reflection profiles, with a cumulative length of more than sixty thousand kilometers, have been completed in mainland China. We summarize the results in the form of (1) a new contour map of crustal thickness, (2) fourteen representative crustal seismic velocity–depth columns for various tectonic units, and, (3) a Pn velocity map. We found a no
Authors
S. Li, Walter D. Mooney, J. Fan
Impacts of land subsidence caused by withdrawal of underground fluids in the United States
No abstract available.
Authors
Thomas L. Holzer, Devin L. Galloway
Blind comparisons of shear-wave velocities at closely-spaced sites in San Jose, California: Proceedings of a Workshop held at the US Geological Survey, Menlo Park, May 3, 2004
Shear-wave velocities within several hundred meters of Earth's surface are important in specifying earthquake ground motions for engineering design. Not only are the shearwave velocities used in classifying sites for use of modern building codes, but they are also used in site-specific studies of particularly significant structures. Many are the methods for estimating sub-surface shear-wave veloci
Map showing features and displacements of the Scenic Drive landslide, La Honda, California, during the period March 31-May 7, 2005
No abstract available.
Authors
Ray E. Wells, Michael J. Rymer, Carol S. Prentice, Karen L. Wheeler
Holocene fault scarps and shallow magnetic anomalies along the southern Whidbey Island fault zone near Woodinville, Washington
No abstract available.
Authors
Brian L. Sherrod, Richard J. Blakely, Craig Weaver, Harvey Kelsey, Elizabeth Barnett, Ray Wells
Past and future earthquakes on the San Andreas Fault
No abstract available.
Authors
Ray J. Weldon, Thomas E. Fumal, Glenn Biasi, Katherine M. Scharer
Book review: The race to seismic safety: Protecting California's transportation system
No abstract available.
Authors
Roger D. Borcherdt
Erratum: Empirical evidence for acceleration-dependent amplification factors
Incorrect versions of Figures 5 and 6 containing normalization errors were accidentally published by Borcherdt (2002). They should be replaced with the figures shown here. The text and tabulated regression values published in Borcherdt (2002) are correct and refer to the figures shown here.
Authors
Roger D. Borcherdt
Direct measurement of methane hydrate composition along the hydrate equilibrium boundary
The composition of methane hydrate, namely nw for CH4·nwH2O, was directly measured along the hydrate equilibrium boundary under conditions of excess methane gas. Pressure and temperature conditions ranged from 1.9 to 9.7 MPa and 263 to 285 K. Within experimental error, there is no change in hydrate composition with increasing pressure along the equilibrium boundary, but nw may show a slight system
Authors
S. Circone, Stephen H. Kirby, Laura A. Stern
High-resolution seismic-reflection image of the Chesapeake Bay impact structure, NASA Langley Research Center, Hampton, Virginia
A 1-kilometer-long (0.62-mile-long) seismic reflection and refraction profile collected at the National Aeronautics and Space Administration (NASA) Langley Research Center, Hampton, Va., provides a detailed image of part of the annular trough of the buried, 35-million-year-old Chesapeake Bay impact structure. This profile passes within 5 meters (m; 16.4 feet (ft)) of a 635.1-m-deep (2,083.8-ft-dee
Authors
Rufus D. Catchings, David S. Powars, Gregory Gohn, Mark R. Goldman
Integrated surface and borehole strong-motion, soil-response arrays in San Francisco, California: Empirical measurements of low-strain site coefficients at site class E and D soil sites
An integrated set of four borehole arrays and ten surface installations is installed in the city of San Francisco, California to measure the response of soft-soil deposits to strong earthquake ground motions. The borehole arrays extend through thick layers of soft water-saturated soils of Holocene age and older more consolidated soils of Pleistocene age into bedrock at depths up to 90 m. The surfa
Authors
Roger D. Borcherdt, G. Glassmoyer, Christopher M. Dietel, R.E. Westerlund
libvaxdata: VAX data format conversion routines
libvaxdata provides a collection of routines for converting numeric data-integer and floating-point-to and from the formats used on a Digital Equipment Corporation1 (DEC) VAX 32-bit minicomputer (Brunner, 1991). Since the VAX numeric data formats are inherited from those used on a DEC PDP-11 16-bit minicomputer, these routines can be used to convert PDP-11 data as well. VAX numeric data formats
Authors
Lawrence M. Baker