TY - JOUR
T1 - Foreshock–mainshock–aftershock sequence analysis of the 14 January 2021 (Mw 6.2) Mamuju–Majene (West Sulawesi, Indonesia) earthquake
AU - Supendi, Pepen
AU - Ramdhan, Mohamad
AU - Priyobudi, null
AU - Sianipar, Dimas
AU - Wibowo, Adhi
AU - Gunawan, Mohamad Taufik
AU - Rohadi, Supriyanto
AU - Riama, Nelly Florida
AU - Daryono, null
AU - Prayitno, Bambang Setiyo
AU - Murjaya, Jaya
AU - Karnawati, Dwikorita
AU - Meilano, Irwan
AU - Rawlinson, Nicholas
AU - Widiyantoro, Sri
AU - Nugraha, Andri Dian
AU - Marliyani, Gayatri Indah
AU - Palgunadi, Kadek Hendrawan
AU - Elsera, Emelda Meva
N1 - KAUST Repository Item: Exported on 2021-05-27
Acknowledgements: This research was supported and funded by Komite Kajian Gempabumi dan Tsunami BMKG 2021.
PY - 2021/5/17
Y1 - 2021/5/17
N2 - AbstractWe 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 and their focal mechanisms show that they occurred on two different fault planes, in which the foreshock perturbed the stress state of a nearby fault segment, causing the fault plane to subsequently rupture. The mainshock had relatively few aftershocks, an observation that is likely related to the kinematics of the fault rupture, which is relatively small in size and of short duration, thus indicating a high stress-drop earthquake rupture. The Coulomb stress change shows that areas to the northwest and southeast of the mainshock have increased stress, consistent with the observation that most aftershocks are in the northwest.
AB - AbstractWe 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 and their focal mechanisms show that they occurred on two different fault planes, in which the foreshock perturbed the stress state of a nearby fault segment, causing the fault plane to subsequently rupture. The mainshock had relatively few aftershocks, an observation that is likely related to the kinematics of the fault rupture, which is relatively small in size and of short duration, thus indicating a high stress-drop earthquake rupture. The Coulomb stress change shows that areas to the northwest and southeast of the mainshock have increased stress, consistent with the observation that most aftershocks are in the northwest.
UR - http://hdl.handle.net/10754/669267
UR - https://earth-planets-space.springeropen.com/articles/10.1186/s40623-021-01436-x
U2 - 10.1186/s40623-021-01436-x
DO - 10.1186/s40623-021-01436-x
M3 - Article
SN - 1880-5981
VL - 73
JO - Earth, Planets and Space
JF - Earth, Planets and Space
IS - 1
ER -