The October 2010 earthquake is thought to have been a result of thrust faulting along or near the plate interface from the calculated focal mechanism and the focal depth . According to seismic hazard potentials and deformation features , the Sunda Trench can be divided into several segments . The southern segment lies to the south of Siberut Island . The rupture area of this earthquake is situated within the southern segment , where historical earthquakes include the earthquake of 1797 and the ~ 9.0 1833 Sumatra earthquake
earthquake of 1797
1797 Sumatra earthquake
2010 Mentawai earthquake and tsunami