Title

Preliminary Report on the 22 December 2003, M 6.5 San Simeon, California Earthquake

Author Info

Jeanne L. Hardebeck, U.S. Geological Survey, Menlo Park
John Boatwright, U.S. Geological Survey, Menlo Park
Douglas Dreger, University of California - Berkeley
Rakesh K. Goel, California Polytechnic State University, San Luis ObispoFollow
Vladimir Graizer, California Geological Survey
Kenneth Hudnut, U.S. Geological Survey, Pasadena
Chen Ji, California Institute of Technology
Lucile Jones, U.S. Geological Survey, Pasadena
John Langbein, U.S. Geological Survey, Menlo Park
Jian Lin, Woods Hole Oceanographic Institution
Evelyn Roeloffs, U.S. Geological Survey, Vancouver
Robert Simpson, U.S. Geological Survey, Menlo Park
Keith Stark, U.S. Geological Survey, Pasadena
Ross Stein, U.S. Geological Survey, Menlo Park
John C. Tinsley, U.S. Geological Survey, Menlo Park

Recommended Citation

Postprint version. Published in Seismological Research Letters, Volume 75, Issue 2, March 1, 2004, pages 155-172.

The definitive version is available at https://doi.org/10.1785/gssrl.75.2.155.

Abstract

The M_w 6.5 San Simeon earthquake struck the central California coast on 22 December 2003 at 19:15:56 UTC (11:15:56 am local time.) The epicenter was located 11 km northeast of the town of San Simeon, and 39 km west-northwest of Paso Robles (Figure 1), as reported by the California Integrated Seismic Network (CISN, the California region of the Advanced National Seismic System [ANSS]). The mainshock nucleated at 35.702°N, 121.108°W and a depth of 7.1 km, and the rupture propagated unilaterally to the southeast. The strong directivity of the rupture resulted in a concentration of damage and aftershock...

Disciplines

Civil and Environmental Engineering

Copyright

Copyright © 2004 Seismological Society of America

Number of Pages

18