Co-seismic slip distribution inversion applied to the MW 6.0 mutata eathquake (Colombia)
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2017
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Descripción general
Colombia se encuentra situado en la placa Suramérica con dos zonas de subducción, una al oeste en la región Pacífica (placa Nazca), y otra en el norte en la región caribe (placa Caribe). Esto conlleva la presencia de grandes y complejos sistemas de fallas alrededor de todo Colombia. En Septiembre 14 de 2016 un terremoto de magnitud 6.0 ocurrió en el noroeste de Colombia en la falla de Uramita, cerca del pueblo Mutata a una profundidad aproximada de 18km. El tensor de momento calculado por el USGS para este evento muestra un mecanismo focal para una falla inversa buzando a 35° y una pequeña componente lateral diestra. Este evento es una de los más superficiales y fuertes que ha ocurrido desde la instalación de la Red Sismológica Nacional Colombiana en 1993. En este trabajo se procesaron datos sismológicos para realizar la inversión matemática de los mismos y de esta forma
Colombia is located on the South American plate with two zones of subductions, one to the west on the Pacific side (Nazca plate), and one to the North on the Caribbean side (Caribbean plate). This leads to the presence of large and complex fault system within Colombia. On September 14, 2016, a Mw 6.0 earthquake occurred in Northwestern Colombia on the Uramita fault close to Mutata at a depth of approximately 18 km. The moment tensor calculated by the USGS for this event shows a thrust fault focal mechanism with a fault plane dipping at 35° and a small right-lateral component. Interestingly, the moment tensor decomposition shows a double couple component of only 55%. This event is both one of the most superficial and one of the strongest seismic events that occurred in Colombia since the installation of the national seismological network (RSNC) in 1993. In this work, we prepared
Colombia is located on the South American plate with two zones of subductions, one to the west on the Pacific side (Nazca plate), and one to the North on the Caribbean side (Caribbean plate). This leads to the presence of large and complex fault system within Colombia. On September 14, 2016, a Mw 6.0 earthquake occurred in Northwestern Colombia on the Uramita fault close to Mutata at a depth of approximately 18 km. The moment tensor calculated by the USGS for this event shows a thrust fault focal mechanism with a fault plane dipping at 35° and a small right-lateral component. Interestingly, the moment tensor decomposition shows a double couple component of only 55%. This event is both one of the most superficial and one of the strongest seismic events that occurred in Colombia since the installation of the national seismological network (RSNC) in 1993. In this work, we prepared