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TriNet "ShakeMaps": Rapid Generation of Peak Ground Motion and Intensity Maps for Earthquakes in Southern California

Wald, David J. and Quitoriano, Vincent and Heaton, Thomas H. and Kanamori, Hiroo and Scrivner, Craig W. and Worden, C. Bruce (1999) TriNet "ShakeMaps": Rapid Generation of Peak Ground Motion and Intensity Maps for Earthquakes in Southern California. Earthquake Spectra, 15 (3). pp. 537-555. ISSN 8755-2930. doi:10.1193/1.1586057.

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Rapid (3-5 minutes) generation of maps of ground motion shaking and intensity is accomplished with advances in real-time seismographic data acquisition combined with newly-developed relationships between recorded ground motion parameters and expected shaking intensity values. Estimation of shaking over the entire regional extent of southern California is accomplished by spatial interpolation of the measured ground motions with geologically-based, frequency and amplitude-dependent site corrections. Production of the maps is automatic, triggered by any significant earthquake in southern California. Maps are now made available within several minutes of the earthquake for public and scientific consumption via the World-Wide-Web; they will be made available with dedicated communications for emergency response agencies and critical users.

Item Type:Article
Related URLs:
URLURL TypeDescription
Heaton, Thomas H.0000-0003-3363-2197
Kanamori, Hiroo0000-0001-8219-9428
Additional Information:© 1999 Earthquake Spectra. Conversations with K. Campbell, R. Nigbor, and M. Petersen were very helpful. S. Park provided his QTM geology maps in digital form. Reviews by K. Campbell, M. Trifunac, R. Graves, and N. Field improved this manuscript, as did recommendations of Editorial Board Member P. Somerville. All the participants in TriNet played a critical role in this work, most notably D. Given, E. Hauksson, P. Maechling, and A. Shakal. Maps were made with Generic Mapping Tools (GMT, Wessel and Smith, 1991). Seismological Laboratory Contribution Number 8582. TriNet is funded by the OES/FEMA Hazard Mitigation Grant Program, Grant No. FEMA-1008-DR-CA, HMGP NO.003, FIPS No.037-90027; the USGS, the CDMG, the Calif. Trade and Commerce Agency, the Calif. Technology Investment Partnership Program; and private sector contributions.
Funding AgencyGrant Number
Federal Emergency Management Agency (FEMA)FEMA-1008-DR-CA
Federal Emergency Management Agency (FEMA)HMGP NO.003
Federal Emergency Management Agency (FEMA)FIPS No.037-90027
California Division of Mines and GeologyUNSPECIFIED
California Trade and Commerce AgencyUNSPECIFIED
California Technology Investment Partnership ProgramUNSPECIFIED
California Office of Emergency ServicesUNSPECIFIED
Subject Keywords:Southern California, ground motion maps, Earthquake intensities, maps, Wrightwood, California earthquake, Aug. 20, 1998, maximum acceleration maps, Northridge, California earthquake, Jan. 17, 1994, maximum velocity maps, Ground motion, prediction
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Other Numbering System NameOther Numbering System ID
Caltech Seismological Laboratory Contribution8582
Issue or Number:3
Record Number:CaltechAUTHORS:20111220-112252129
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:28537
Deposited By: Tony Diaz
Deposited On:20 Dec 2011 22:17
Last Modified:09 Nov 2021 16:58

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