Deformation and fault parameters of the 2005 Qeshm earthquake in Iran revisited: A Bayesian simulated annealing approach applied to the inversion of space geodetic data

Source parameters of the 2005 Qeshm earthquakes have already been estimated using various studies, including seismicity, the earth's surface deformation field, and rupture characteristics. Each of these studies proposes different mechanisms for the earthquakes. In this study, source parameters of the 2005 Qeshm earthquake and its main aftershock are determined with their precision by applying simulated annealing optimization in a Bayesian framework using a coseismal deformation field derived from Envisat radar interferometry. The results agree with surface ruptures and the proposed activation of the Qeshm and a NW-SE faults during main shock and main aftershock. This estimate indicates a reverse-slip of 88 ± 11 cm on the Qeshm fault and 38 ± 12 cm of strike-slip on the NW-SE fault.