April 11, 2006

Understanding the 1906 Earthquake

An informal discussion with


 Prof. Gregory C. Beroza

Professor of Geophysics
Stanford University

Tuesday April 11, 2006
6 to 7:30 p.m.

Professor Beroza has re-examined historical data from the 1906 San Francisco earthquake.  The data suggest that the earthquake ruptured a full 300 miles of the San Andreas Fault, that its magnitude was 7.9, and that the rupture speed to the north of San Francisco may have been exceptionally high. This joint effort by the USGS and Stanford University is aimed at understanding better the distribution of shaking and damage in 1906 in order to improve predictions of areas most likely to be strongly shaken in future large earthquakes in the Bay Area.  Professor Beroza received his undergraduate degree in Earth Science from the University of California, Santa Cruz in 1983, and his Ph.D. in Geophysics from MIT in 1989. He joined the Stanford faculty in the Geophysics Department of the School of Earth Sciences in 1990.  His research focuses on the study of seismic waves, earthquake predictability, the variations in efficiency in relation to earthquake size, the mechanism of recently discovered seismic tremor, and the 1906 earthquake.