The Mexico Earthquake of September 19, 1985—Effect of Magnitude on the Character of Strong Ground Motion: An Example from the Guerrero, Mexico Strong Motion Network

Author:

Anderson J. G.1,Quaas R.2

Affiliation:

1. Seismological Laboratory, Mackay School of Mines, University of Nevada-Reno, Reno, Nevada 89557

2. Instituto de Ingenieria, Universidad Nacional Autonoma de Mexico, Ciudad Universitaria, Coyoacan 04510, Mexico D.F. MEXICO

Abstract

The Guerrero digital accelerograph network has been operating, since spring of 1985, on rock sites along the coast of Mexico, above an active subduction zone. The accelerograms collected through June 1987 include examples from events with magnitudes from 3 to 8, all recorded at nearly the same hypocentral distance. Spectra from these accelerograms scale in a manner that is qualitatively consistent with earthquake source theory. Based on four selected events, peak accelerations attenuate more rapidly for small events than for large events.

Publisher

SAGE Publications

Subject

Geophysics,Geotechnical Engineering and Engineering Geology

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