5.9 M_w, 18th June 2010 earthquake and fault segment linkage at Andaman - A study based on macroseismic survey, GPS geodesy and Coulomb stress changes

摘要

18th June, 2010 5.9 M_w earthquake at North Andaman triggered along NW-SE pre-existing fault with reverse fault mechanism. Macroseismic survey and GPS geodesy reveal maximum damages following NE-SW trend due to normal fault mechanism. Coulomb stress modeling for post- and inter-seismic earthquakes after the 2004 mega-earthquake show different stages of fault segment linkage at North Andaman. The present earthquake has been explained as co-shock due to asiesmic soft linkage of fault propagation.