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The 1987 Whittier Narrows Earthquake in the Los Angeles Metropolitan Area, California

Hauksson, Egill and Jones, Lucile M. and Davis, Thomas L. and Hutton, L. Katherine and Brady, A. Gerald and Reasenberg, Paul A. and Michael, Andrew J. and Yerkes, Robert F. and Williams, Patrick and Reagor, Glen and Stover, Carl W. and Bent, Allison L. and Shakal, Anthony K. and Etheredge, Edwin and Porcella, Ronald L. and Bufe, Charles G. and Johnston, Malcolm J. S. and Cranswick, Edward (1988) The 1987 Whittier Narrows Earthquake in the Los Angeles Metropolitan Area, California. Science, 239 (4846). pp. 1409-1412. ISSN 0036-8075. doi:10.1126/science.239.4846.1409.

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The Whittier Narrows earthquake sequence (local magnitude, M_L = 5.9), which caused over $358-million damage, indicates that assessments of earthquake hazards in the Los Angeles metropolitan area may be underestimated. The sequence ruptured a previously unidentified thrust fault that may be part of a large system of thrust faults that extends across the entire east-west length of the northern margin of the Los Angeles basin. Peak horizontal accelerations from the main shock, which were measured at ground level and in structures, were as high as 0.6g (where g is the acceleration of gravity at sea level) within 50 kilometers of the epicenter. The distribution of the modified Mercalli intensity VII reflects a broad north-south elongated zone of damage that is approximately centered on the main shock epicenter.

Item Type:Article
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URLURL TypeDescription
Hauksson, Egill0000-0002-6834-5051
Jones, Lucile M.0000-0002-2690-3051
Additional Information:© 1988 American Association for the Advancement of Science. Received 20 November 1987; accepted 4 February 1988. This research was supported by internal and external elements of the National Earthquake Hazards Reduction Program of the U.S. Geological Survey.
Group:Seismological Laboratory
Funding AgencyGrant Number
Issue or Number:4846
Record Number:CaltechAUTHORS:20130220-090842835
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:37011
Deposited By: Tony Diaz
Deposited On:20 Feb 2013 19:10
Last Modified:09 Nov 2021 23:26

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