Abstract

Seismoscope records from a magnitude 5.0 earthquake on January 19, 1960, and from magnitudes 5.6 and 5.5 earthquakes on April 8, 1961, in the Hollister, California, area, like those from the Parkfield, California, main shock of June 27, 1966, indicate that the maximum amplitude of transient motion in close proximity to the San Andreas Fault was oriented at a large angle to the strike of the fault.

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