%A Wibowo, Adhi %A Supendi, Pepen %A Nugraha, Andri D. %D 2020 %T Coulomb Stress Change of Mw 7.5 Palu-Donggala Earthquake, Sulawesi (28 September 2018) %B 2020 %9 %! Coulomb Stress Change of Mw 7.5 Palu-Donggala Earthquake, Sulawesi (28 September 2018) %K %X The Mw 7.5 Palu earthquake that occurred in Palu-Central Sulawesi, Indonesia, on September 28, 2018 , accompanied by the tsunami and liquefaction caused casualties and building damage in the city of Palu and its surroundings. One month later , a series of earthquakes swarm occurred in Mamasa, West Sulawesi. In this study, coulomb stress were calculated using a half-space elastic model in a square plane which is assumed to be homogeneous isotropy to analyze whether there is a relationship between earthquakes that occur in Palu and earthquake s swam in the coulomb stress field changes. The results show that the area that experienced a stress reduction predominantly towards the north and south of the main shock hypocenter, while the aftershocks were at an increase in coul o mb stress changes, so that the Mamasa earthquake s swarm probably have been triggered by the Palu earthquake . %U https://jurnal-geofisika.or.id/index.php/jurnal-geofisika/article/view?path= %J Jurnal Geofisika %0 Journal Article %R 10.36435/jgf.v18i1.423 %& 19 %P 4 %V 18 %N 1 %@ 2477-6084 %8 2020-09-29 %7 2020-09-29