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New seismic hazard maps for Puerto Rico and the U.S. Virgin Islands

January 1, 2010

The probabilistic methodology developed by the U.S. Geological Survey is applied to a new seismic hazard assessment for Puerto Rico and the U.S. Virgin Islands. Modeled seismic sources include gridded historical seismicity, subduction-interface and strike-slip faults with known slip rates, and two broad zones of crustal extension with seismicity rates constrained by GPS geodesy. We use attenuation relations from western North American and worldwide data, as well as a Caribbean-specific relation. Results are presented as maps of peak ground acceleration and 0.2- and 1.0-second spectral response acceleration for 2% and 10% probabilities of exceedance in 50 years (return periods of about 2,500 and 500 years, respectively). This paper describes the hazard model and maps that were balloted by the Building Seismic Safety Council and recommended for the 2003 NEHRP Provisions and the 2006 International Building Code. ?? 2010, Earthquake Engineering Research Institute.

Publication Year 2010
Title New seismic hazard maps for Puerto Rico and the U.S. Virgin Islands
DOI 10.1193/1.3277667
Authors Charles S. Mueller, Arthur D. Frankel, Mark D. Petersen, Edgar V. Leyendecker
Publication Type Article
Publication Subtype Journal Article
Series Title Earthquake Spectra
Index ID 70034189
Record Source USGS Publications Warehouse