The waveform inversion of mainshock and aftershock data of the 2006 M6.3 Yogyakarta earthquake

Abstract This study comprehensively investigates the source mechanisms associated with mainshock and aftershocks of Mw = 6.3 Yogyakarta earthquake which occurred on May 27, 2006. The process involved using moment tensor inversion to determine fault plane parameters joint were further applied understand spatial temporal slip distributions during earthquake. Moreover, coseismal distribution was overlaid relocated aftershock stress field variations around tectonic area. Meanwhile, made use near-field data its Green’s function calculated extended reflectivity method while used teleseismic body wave computed Kikuchi Kanamori methods. These filtered through a trial-and-error bandpass filter frequency pairs velocity models from several previous studies. Furthermore, Akaike Bayesian Information Criterion (ABIC) obtain more stable results different types discovered. Strike–slip dip-normal recorded for similar 8th 9th 16th June strike slips. However, showed two asperities. maximum 0.78 m first asperity observed at 10 km south/north hypocenter. discovered include total seismic M 0 0.4311E + 19 (Nm) or 6.4 depth 12 duration 28 s. tendency occur asperities zone normal oblique focus mechanism found inversion.