Group A, Poster #003, Seismology
Seismicity in the Gulf of California, México, Before and After the El Mayor-Cucapah (Mw7.2) Earthquake of April 2010
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Poster Presentation
2022 SCEC Annual Meeting, Poster #003, SCEC Contribution #11905 VIEW PDF
he ISC (International Seismological Centre) and the SSN (Servicio Sismológico Nacional, UNAM) catalogs. The minimum magnitude of completeness of the compiled catalog is Mc=3.6, and many hypocenters concentrate between 5 km and 10 km depth, the likely depth of the seismogenic zone of the earthquakes in the GoC. The distribution of the epicenters shows that the Pacific-North America plate boundary in the GoC is not simple, this plate boundary consists of a highly segmented fault system, particularly in the northern GoC, where the seismicity shows a broad zone of deformation. We identify active and inactive faults in this region, and we detected faults located approximately 300 km SE of the April 2010 El Mayor-Cucapah (Mw 7.2) earthquake that were probably reactivated by this earthquake sequence. We also detected seismicity lineaments and strike-slip events off the major transform faults that tend to occur parallel to the ridge direction either at the continental crust or at the oceanic-continental transition zone.
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