Foreshock–mainshock–aftershock sequence analysis of the 14 January 2021 (Mw 6.2) Mamuju–Majene (West Sulawesi, Indonesia) earthquake

Abstract We present here an analysis of the destructive Mw 6.2 earthquake sequence that took place on 14 January 2021 in Mamuju–Majene, West Sulawesi, Indonesia. Our relocated foreshocks, mainshock, and aftershocks their focal mechanisms show they occurred two different fault planes, which foreshock perturbed stress state a nearby segment, causing plane to subsequently rupture. The mainshock had relatively few aftershocks, observation is likely related kinematics rupture, small size short duration, thus indicating high stress-drop Coulomb change shows areas northwest southeast have increased stress, consistent with most are northwest.