Seismicity in the Region of the Gulf of California, Mexico From 1900 to 2018

Date: 4/26/2019

Time: 06:00 PM

Room: Grand Ballroom

We prepare a catalog of earthquakes that occurred in the region of the Gulf of California, Mexico between 1900 and 2018. The coordinates of the hypocenters were retrieved from catalogs of the National Seismological Service of UNAM (National Autonomous University of Mexico), the Seismological Network of CICESE (Centro de Investigación Científica y de Estudios Superiores de Ensenada, Baja California, México) and the International Seismological Centre (ISC). We also included events recorded by regional stations of the Broadband Seismological Network of the Gulf of California (RESBAN) operated by CICESE and by a temporal array of ocean-bottom seismographs, of the SCOOBA experiment that operated in the southern gulf (Sumy et al., 2013).

The catalog consists of more than 3600 shallow earthquakes with magnitudes M < 7. We also compile focal mechanisms from the GCMT catalog to analyze the tectonic features of the gulf region. The seismicity tends to concentrate along the North America-Pacific plate boundary and the main earthquakes occur on or near the active transform faults, particularly in the southern Gulf of California. However, the spatial distribution of seismicity in the northern gulf is more complex.

Presenting Author: Raul R. Castro

Authors