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Long-period ground motion from a great earthquake

Butler, Rhett and Kanamori, Hiroo (1980) Long-period ground motion from a great earthquake. Bulletin of the Seismological Society of America, 70 (4). pp. 943-961. ISSN 0037-1106.

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Direct body waves and fundamental surface waves are calculated for a credible, hypothetical great earthquake on the San Andreas Fault. The prototype event assumed is the Fort Tejon earthquake of January 9, 1857. Amplitudes and durations of long-period ground motion (T > 1 sec) are found for a receiver in downtown Los Angeles. Calculations are carried out for various epicenters, dislocation profiles, and time functions. Ground motion from Love radiation is found to be most important, with peak-to-peak amplitudes up to 14 cm and durations up to 5 min. This duration is a factor of 3 longer than has been assumed by previous design earthquakes whose estimates have been based upon acceleration criteria. Although the present result reveals several important features of long-period ground motion resulting from a great earthquake, more details of rupture propagation need to be known before a more definitive prediction can be made. The present result should be considered tentative.

Item Type:Article
Related URLs:
URLURL TypeDescription
Kanamori, Hiroo0000-0001-8219-9428
Additional Information:© 1980, by the Seismological Society of America. Manuscript received January 29, 1979. Rhett Butler was supported by a Fannie and John Hertz Foundation Fellowship and the U.S. Department of Agriculture. The research was supported by U.S. Geological Survey Contracts 14-08-0001-16776, 14-08-0001-17631, and 14-08-001-18321, Division of Geological and Planetary Sciences, California Institute of Technology, Pasadena, California 91125.
Group:UNSPECIFIED, Division of Geological and Planetary Sciences
Funding AgencyGrant Number
Fannie and John Hertz FoundationUNSPECIFIED
U.S. Department of AgricultureUNSPECIFIED
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Caltech Division of Geological and Planetary Sciences2920
Issue or Number:4
Record Number:CaltechAUTHORS:20140903-074818909
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Official Citation:Rhett Butler and Hiroo Kanamori Long-period ground motion from a great earthquake Bulletin of the Seismological Society of America, August 1980, v. 70, p. 943-961
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:49165
Deposited By: Ruth Sustaita
Deposited On:03 Sep 2014 15:02
Last Modified:09 Mar 2020 13:18

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