2006
DOI: 10.1785/0120050243
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Modeling and Validation of a 3D Velocity Structure for the Santa Clara Valley, California, for Seismic-Wave Simulations

Abstract: A 3D seismic velocity and attenuation model is developed for Santa Clara Valley, California, and its surrounding uplands to predict ground motions from scenario earthquakes. The model is developed using a variety of geologic and geophysical data. Our starting point is a 3D geologic model developed primarily from geologic mapping and gravity and magnetic surveys. An initial velocity model is constructed by using seismic velocities from boreholes, reflection/refraction lines, and spatial autocorrelation microtre… Show more

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Cited by 43 publications
(29 citation statements)
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References 70 publications
(80 reference statements)
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“…Regional differences in the sonic velocities and densities in these basins largely reflect variations in the lithology, depth of burial, grain size, and porosity, but are not necessarily the stratigraphic age of the deposits (Brocher, 2005c). Older Cenozoic sedimentary rocks contribute to the amplification of low frequency strong ground motions in these basins (e.g., Dolenc et al, 2005;Aagaard, 2006;Graves, 2006;Hartzell et al, 2006;Rodgers et al, 2006;Aagaard, Brocher, Dolenc, Dreger, Graves, Harmsen, Hartzell, Larsen, McCandless, et al, 2008;Rodgers et al, 2008). There are two primary datasets providing information on Vp versus depth for older Cenozoic sedimentary rocks.…”
Section: Older Cenozoic Sedimentary Rocksmentioning
confidence: 99%
“…Regional differences in the sonic velocities and densities in these basins largely reflect variations in the lithology, depth of burial, grain size, and porosity, but are not necessarily the stratigraphic age of the deposits (Brocher, 2005c). Older Cenozoic sedimentary rocks contribute to the amplification of low frequency strong ground motions in these basins (e.g., Dolenc et al, 2005;Aagaard, 2006;Graves, 2006;Hartzell et al, 2006;Rodgers et al, 2006;Aagaard, Brocher, Dolenc, Dreger, Graves, Harmsen, Hartzell, Larsen, McCandless, et al, 2008;Rodgers et al, 2008). There are two primary datasets providing information on Vp versus depth for older Cenozoic sedimentary rocks.…”
Section: Older Cenozoic Sedimentary Rocksmentioning
confidence: 99%
“…The adopted numerical methods range finite differences (e.g. Olsen et al 1995, Moczo et al 2002, Graves & Wald 2004, Hartzell et al 2006, Harmsen et al 2008) or finite elements (e.g. Bao et al 1998, Aagaard et al 2001, Bielak et al 2005) to discontinuous Galerkin (e.g.…”
Section: Numerical Simulationsmentioning
confidence: 99%
“…The method has been successfully applied by a large number of authors to generate synthetic seismograms (e.g. Olsen and Archuleta 1996;Larsen et al 1997;Pitarka et al 2004;Hartzell et al 2006;Kagawa et al 2004;Grandin et al 2007a, b).…”
Section: Ground Motion Simulations and Earthquake Sourcementioning
confidence: 99%