The Earthquake Engineering Online Archive

Accelerations in rock for earthquakes in the Western United States

Schnabel, Per B.; Seed, H. Bolton

UCB/EERC-72/02, Earthquake Engineering Research Center, University of California, Berkeley, 1972-07, 15 pages (450/S36/1972)

A summary of observed and computed rock motions for earthquakes occurring in the Western part of the United States and Mexico is presented, together with a method for computing the changes in amplitude and predominant period of rock motions as a function of distance from source and fault geometry. The method is based on conventional concepts in seismic analysis; but it is oriented towards strong rock motions and distances within 50 to 100 miles from the source, the records of which have been significantly improved due to the monitoring of the San Fernando Earthquake of 1971.

Available online: http://nisee.berkeley.edu/documents/EERC/EERC-72-02.pdf (1 MB)