The SCEC Southern California Reference Three-Dimensional Seismic Velocity Model Version 2
Abstract
We describe Version 2 of the three-dimensional (3D) seismic velocity model of southern California developed by the Southern California Earthquake Center and designed to serve as a reference model for multidisciplinary research activities in the area. The model consists of detailed, rule-based representations of the major southern California basins (Los Angeles basin, Ventura basin, San Gabriel Valley, San Fernando Valley, Chino basin, San Bernardino Valley, and the Salton Trough), embedded in a 3D crust over a variable depth Moho. Outside of the basins, the model crust is based on regional tomographic results. The model Moho is represented by a surface with the depths determined by the receiver function technique. Shallow basin sediment velocities are constrained by geotechnical data. The model is implemented in a computer code that generates any specified 3D mesh of seismic velocity and density values. This parameterization is convenient to store, transfer, and update as new information and verification results become available.
Additional Information
© 2000 by the Seismological Society of America. Manuscript received 28 July 2000. Discussions with W. Silva were helpful in constructing the model. We thank L. Zhu, E. Hauksson, and W. Silva for providing data and research products used in the model, and John Tinsley and Tom Brocher for thoughtful reviews of the manuscript. Many figures were made using the GMT plotting package (Wessel and Smith, 1991). This research was supported by the Southern California Earthquake Center (SCEC). SCEC is funded by NSF Cooperative Agreement EAR-8920136 and USGS Cooperative Agreements 14-08-0001-A0899 and 1434-HQ-97AG01718. The SCEC contribution number for this paper is 509. Partial support came from NSF KDI program Award CMS-9980063. The Salton Trough model development was supported by NSF Award EAR-9725536.Attached Files
Published - Magistrale2000.pdf
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Additional details
- Eprint ID
- 34614
- Resolver ID
- CaltechAUTHORS:20121002-095135414
- Southern California Earthquake Center (SCEC)
- NSF
- EAR-8920136
- USGS
- 14-08-0001-A0899
- USGS
- 1434-HQ-97AG01718
- NSF
- CMS-9980063
- NSF
- EAR-9725536
- Created
-
2012-10-02Created from EPrint's datestamp field
- Updated
-
2021-11-09Created from EPrint's last_modified field
- Caltech groups
- Seismological Laboratory, Division of Geological and Planetary Sciences (GPS)
- Other Numbering System Name
- Southern California Earthquake Center (SCEC)
- Other Numbering System Identifier
- 509