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The SCEC Southern California Reference Three-Dimensional Seismic Velocity Model Version 2

Magistrale, Harold and Day, Steven and Clayton, Robert W. and Graves, Robert (2000) The SCEC Southern California Reference Three-Dimensional Seismic Velocity Model Version 2. Bulletin of the Seismological Society of America, 90 (6). S65-S76. ISSN 0037-1106. http://resolver.caltech.edu/CaltechAUTHORS:20121002-095135414

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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.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1785/0120000510DOIArticle
http://bssa.geoscienceworld.org/content/90/6B/S65PublisherArticle
ORCID:
AuthorORCID
Clayton, Robert W.0000-0003-3323-3508
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.
Group:Seismological Laboratory
Funders:
Funding AgencyGrant Number
Southern California Earthquake Center (SCEC)UNSPECIFIED
NSFEAR-8920136
USGS14-08-0001-A0899
USGS1434-HQ-97AG01718
NSFCMS-9980063
NSFEAR-9725536
Other Numbering System:
Other Numbering System NameOther Numbering System ID
Southern California Earthquake Center (SCEC)509
Record Number:CaltechAUTHORS:20121002-095135414
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20121002-095135414
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:34614
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:02 Oct 2012 17:01
Last Modified:31 Jan 2017 21:21

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