Publications
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Continuous borehole strain and pore pressure in the near field of the 28 September 2004 M 6.0 Parkfield, California, earthquake: Implications for nucleation, fault response, earthquake prediction and tremor Continuous borehole strain and pore pressure in the near field of the 28 September 2004 M 6.0 Parkfield, California, earthquake: Implications for nucleation, fault response, earthquake prediction and tremor
Near-field observations of high-precision borehole strain and pore pressure, show no indication of coherent accelerating strain or pore pressure during the weeks to seconds before the 28 September 2004 M 6.0 Parkfield earthquake. Minor changes in strain rate did occur at a few sites during the last 24 hr before the earthquake but these changes are neither significant nor have the form...
Authors
M.J.S. Johnston, R. D. Borcherdt, A. T. Linde, M. T. Gladwin
Crustal structure and tectonics of the northern part of the Southern Granulite Terrane, India Crustal structure and tectonics of the northern part of the Southern Granulite Terrane, India
Deep seismic reflection studies investigating the exposed Archean lower continental crust of the Southern Granulite Terrane, India, yield important constraints on the nature and evolution of the deep crust, including the formation and exhumation of granulites. Seismic reflection images along the Kuppam–Bhavani profile reveal a band of reflections that dip southward from 10.5 to 15.0 s...
Authors
V.V. Rao, K. Sain, P.R. Reddy, Walter D. Mooney
Explosion source strong ground motions in the Mississippi embayment Explosion source strong ground motions in the Mississippi embayment
Two strong-motion arrays were deployed for the October 2002 Embayment Seismic Excitation Experiment to study the spatial variation of strong ground motions in the deep, unconsolidated sediments of the Mississippi embayment because there are no comparable strong-motion data from natural earthquakes in the area. Each linear array consisted of eight three-component K2 accelerographs spaced...
Authors
C.A. Langston, P. Bodin, C. Powell, M. Withers, S. Horton, Walter D. Mooney
Crustal structure of mainland China from deep seismic sounding data 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...
Authors
S. Li, Walter D. Mooney, J. Fan
Crustal structure of the northeastern margin of the Tibetan plateau from the Songpan-Ganzi terrane to the Ordos basin Crustal structure of the northeastern margin of the Tibetan plateau from the Songpan-Ganzi terrane to the Ordos basin
The 1000-km-long Darlag–Lanzhou–Jingbian seismic refraction profile is located in the NE margin of the Tibetan plateau. This profile crosses the northern Songpan-Ganzi terrane, the Qinling-Qilian fold system, the Haiyuan arcuate tectonic region, and the stable Ordos basin. The P-wave and S-wave velocity structure and Poisson's ratios reveal many significant characteristics in the profile...
Authors
M. Liu, Walter D. Mooney, S. Li, N. Okaya, Shane T. Detweiler
Impacts of land subsidence caused by withdrawal of underground fluids in the United States 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 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...
Map showing features and displacements of the Scenic Drive landslide, La Honda, California, during the period March 31-May 7, 2005 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 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 Past and future earthquakes on the San Andreas Fault
No abstract available.
Authors
Ray J. Weldon, Thomas E. Fumal, Glenn Biasi, Katherine M. Scharer
Erratum: Empirical evidence for acceleration-dependent amplification factors 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