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Hemendra K. Acharya
Influence of fault bends on ruptures
Bulletin of the Seismological Society of America (December 1997), 87(6):1691-1696
Abstract: Index Terms/Descriptors: Latitude & Longitude:
GeoRef, Copyright 2004, American Geological Institute.
Data on slip along the San Andreas Fault have been examined to understand the influence of a bend in the fault system on the extent of slip release. A correlation of slip along the fault in the great 1906 and 1857 earthquakes with fault geometry shows that maximum slip occurred near a major change in the fault strike and may be a function of this change. The data appear to suggest that, in general, it takes about 10 years of strain accumulation to negotiate a 1 degrees change in fault strike, assuming a slip rate of about 3 cm/yr. Seismic hazard along the San Andreas Fault may therefore also be a function of fault geometry.
California; correlation; coseismic processes; earthquakes; faults; geometry; neotectonics; rupture; San Andreas Fault; San Francisco earthquake 1857; San Francisco earthquake 1906; seismic risk; seismotectonics; slip rates; tectonics; United States
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