Empirical Response Spectral Attenuation Relations for Shallow Crustal Earthquakes

N. A. Abrahamson; W. J. Silva

doi:10.1785/gssrl.68.1.94

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Research Article| January 01, 1997

Empirical Response Spectral Attenuation Relations for Shallow Crustal Earthquakes

N. A. Abrahamson;

N. A. Abrahamson

Pacific Gas & Electric Co., Geosciences Department  P.O. Box 770000, Mail Code N4C  San Francisco, CA 94177  (N.A.A.)

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W. J. Silva

Pacific Engineering and Analysis  311 Pomona Avenue  E1 Cerrito, CA 94530  e-mail: [email protected]  (W.J.S)

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Author and Article Information

N. A. Abrahamson

Pacific Gas & Electric Co., Geosciences Department  P.O. Box 770000, Mail Code N4C  San Francisco, CA 94177  (N.A.A.)

W. J. Silva

Pacific Engineering and Analysis  311 Pomona Avenue  E1 Cerrito, CA 94530  e-mail: [email protected]  (W.J.S)

Publisher: Seismological Society of America

First Online: 09 Mar 2017

Online ISSN: 1938-2057

Print ISSN: 0895-0695

Seismological Research Letters (1997) 68 (1): 94–127.

https://doi.org/10.1785/gssrl.68.1.94

Abstract

Using a database of 655 recordings from 58 earthquakes, empirical response spectral attenuation relations are derived for the average horizontal and vertical component for shallow earthquakes in active tectonic regions. A new feature in this model is the inclusion of a factor to distinguish between ground motions on the hanging wall and footwall of dipping faults. The site response is explicitly allowed to be non-linear with a dependence on the rock peak acceleration level.

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