Martínez-Torres, Fernando A.

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Time domain moment tensor inversion applied to earthquakes in the Northeastern Caribbean
(2017) Martínez-Torres, Fernando A.; López-Venegas, Alberto M.; College of Arts and Sciences - Arts; Von Hillebrandt Andrade, Christa; Vanacore, Elizabeth; Department of Geology; Huertas, Carlos
This research project tests a thoroughly validated, well-formulated time-domain moment tensor inversion code in order to obtain in quasi real-time faulting parameters of signi cant earthquakes in the Northeastern Caribbean. The inversion code has been developed by Dreger and Helbei, (1991), and the main attractive feature is to decrease the time necessary to compute a moment tensor for any major earthquake using regional data. Six earthquakes in the study region have been used as testbed to the inversion code con gured for this area. In order to compare the results, previously computed and published moment tensor inversions from the Global Centroid Moment Tensor for the same events were used. Our results indicate the inversion method is capable of reproducing the regional solutions, and thus can be used for quick estimation of fault mechanism. However, a priori knowledge of which stations or station combination to use is needed to compute a moment tensor in real time applications.