U.S. Geological Survey Open-File Report 2010-1168
ABSTRACT
We present one-dimensional shear-wave velocity (VS) profiles at 52 strong-motion sites that recorded the 28 September 2004 Magnitude 6.0 Parkfield, Calif., earthquake. We estimate the VS profiles with the Spectral Analysis of Surface-Waves (SASW) method. The SASW method is a noninvasive method that indirectly estimates the VS at depth from variations in the Rayleigh wave phase velocity at the surface. To address the uncertainty associated with these measurements, we compare the SASW profiles to surface-source downhole-receiver (SSDR) profiles at four sites. Three of the four SSDR sites are in close agreement with the adjacent SASW site, while the SASW profile is considerably slower than the SSDR profile at one site. |
Last modified September 28, 2010
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Thompson, Eric M., Kayen, Robert E., Carkin, Brad, and Tanaka, Hajime, 2010, Surface-wave site characterization at 52 strong-motion recording stations affected by the Parkfield, California, M6.0 earthquake of 28 September 2004, U.S. Geological Survey Open-File Report 2010-1168, 117 p.
Abstract
Introduction
Study Area
Field Methods
Inversion Methods
Results
Discussion
Resources
Acknowledgments
References Cited
one appendix
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