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Interseismic Velocity Field and Seismic Moment Release in Northern Baja California, Mexico

2018; Seismological Society of America; Volume: 89; Issue: 2A Linguagem: Inglês

10.1785/0220170133

1938-2057

J. A. Gonzalez-Ortega, Javier González-García, David T. Sandwell,

Earthquake Detection and Analysis

Research Article| February 14, 2018 Interseismic Velocity Field and Seismic Moment Release in Northern Baja California, Mexico J. Alejandro González‐Ortega; J. Alejandro González‐Ortega aDivisión de Ciencias de la Tierra, Centro de Investigación Científica y de Educación Superior de Ensenada, 22860 Ensenada, Baja California, Mexico, aglez@cicese.mx Search for other works by this author on: GSW Google Scholar J. Javier González‐García; J. Javier González‐García aDivisión de Ciencias de la Tierra, Centro de Investigación Científica y de Educación Superior de Ensenada, 22860 Ensenada, Baja California, Mexico, aglez@cicese.mx Search for other works by this author on: GSW Google Scholar David T. Sandwell David T. Sandwell bScripps Institution of Oceanography, UC San Diego, La Jolla, California 92093‐0225 U.S.A. Search for other works by this author on: GSW Google Scholar Author and Article Information J. Alejandro González‐Ortega aDivisión de Ciencias de la Tierra, Centro de Investigación Científica y de Educación Superior de Ensenada, 22860 Ensenada, Baja California, Mexico, aglez@cicese.mx J. Javier González‐García aDivisión de Ciencias de la Tierra, Centro de Investigación Científica y de Educación Superior de Ensenada, 22860 Ensenada, Baja California, Mexico, aglez@cicese.mx David T. Sandwell bScripps Institution of Oceanography, UC San Diego, La Jolla, California 92093‐0225 U.S.A. Publisher: Seismological Society of America First Online: 14 Feb 2018 Online Issn: 1938-2057 Print Issn: 0895-0695 © Seismological Society of America Seismological Research Letters (2018) 89 (2A): 526–533. https://doi.org/10.1785/0220170133 Article history First Online: 14 Feb 2018 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Get Permissions Search Site Citation J. Alejandro González‐Ortega, J. Javier González‐García, David T. Sandwell; Interseismic Velocity Field and Seismic Moment Release in Northern Baja California, Mexico. Seismological Research Letters 2018;; 89 (2A): 526–533. doi: https://doi.org/10.1785/0220170133 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentBy SocietySeismological Research Letters Search Advanced Search ABSTRACT We have analyzed all available continuous Global Positioning System (cGPS) and campaign‐mode GPS data from northern Baja California, Mexico, covering the 1993.1–2010.1 period to obtain a consistent interseismic velocity field to derive a continuous strain‐rate field. The analysis shows concentrations of high strain rate along the Imperial/Cerro Prieto fault system extending from the Salton Sea to the Gulf of California, with strike‐slip faulting consistent with principal strain axes direction within the area of largest historical and instrumental seismic release. We translated the strain rate into geodetic moment accumulation rate to evaluate the potential of seismic activity of the region and compare with the actual seismic release of historical and instrumental earthquake catalog. Comparison of regional moment accumulation rate based on geodesy (⁠M˙0g=6.3±1.3×1018 N·m/yr⁠) to the corresponding moment release rate by earthquakes (⁠M˙0s=2.7±0.8×1018 N·m/yr⁠) highlights a moment rate deficit equivalent to an Mw 7.5–7.8 earthquake. As part of this accumulated moment was released by the recent 2010 Mw 7.2 El Mayor–Cucapah earthquake, these results can provide input constraints on earthquake forecasts for the northern Baja California fault system. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.