RUSSIAN JOURNAL OF EARTH SCIENCES VOL. 5, NO. 1, PAGES 67–73, doi:10.2205/2003ES000119, 2003

Seismic regime of Southern California in relation to the crustal rigidity variations

V. I. Lykov, and A. O. Mostryukov

Schmidt United Institute of Physics of the Earth, Russian Academy of Sciences, Moscow, Russia


[1]  The Landers (southern California) destructive ( M = 7.3) earthquake of June 28, 1992 had epicentral coordinates of (34.2o N, 116.44o W) and was a major seismic event of the period from 1985 through 2002. It was examined in many papers, mostly published in a special issue of Bulletin of Seismological Society of America (BSSA) of June 1994 (vol. 84, no. 3). The majority of the works were devoted to phenomena related to the earthquake itself and its effects. The present paper presents the results derived from the analysis of rigidity variations at the preparation stage of the main shock. This analysis was based on a method developed by the authors for the monitoring of rigidity variations in the seismically active layer of the crust. The method reduces to the possibility of discriminating between the brittle and viscous failure modes using P wave first arrival patterns.

Received 21 January 2003; published 27 January 2003.

Keywords: seismic regime, Southern California, crustal rigidity, earthquakes, arrival patterns.

Citation: Lykov, V. I., and A. O. Mostryukov (2003), Seismic regime of Southern California in relation to the crustal rigidity variations, Russ. J. Earth Sci., 5, No.1, 67-73, doi:10.2205/2003ES000119.

Copyright 2003 by the Russian Journal of Earth Sciences
Powered by TeXWeb (Win32, v.2.0).