The TsuJal Amphibious Seismic Network: A Passive-Source Seismic Experiment in Western Mexico
نویسندگان
چکیده
The geodynamic complexity in the western Mexican margin is controlled by multiple interactions between Rivera, Pacific, Cocos, and North American plates, as evidenced a high seismicity rate, most of whose hypocenters are poorly located. To mitigate this uncertainty with aim improving these hypocentral locations, we undertook TsuJal Project, passive seafloor seismic project conducted from April to November 2016. In addition Jalisco Seismic Network, 10 LCHEAPO 2000 Ocean Bottom Seismometers (OBSs) were deployed BO El Puma array Islas Marías Archipelago (Nayarit) offshore contact states Colima Michoacan. We located 445 earthquakes four or more OBSs within array. Most occurred region Cocos first analysis suggests existence three seismogenic zones (West, Center, East) along Rivera Transform fault that can be correlated its morphological expression throughout zones. estimates Moho discontinuity at km depth supports earlier works regarding West zone earthquake distribution. Subcrustal Central Intra-Transform Spreading Basin domain an ultra-low spreading ridge. A swarm during May June 2016 eastern tip Paleo-Rivera northern East Pacific Rise-Pacific Segment, illuminating some unidentified tectonic feature.
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ژورنال
عنوان ژورنال: Frontiers in Earth Science
سال: 2021
ISSN: ['2296-6463']
DOI: https://doi.org/10.3389/feart.2021.738515