COULOMB STRESS CHANGES DUE TO RECENT ACEH EARTHQUAKES
Abstract: Coulomb stress
change analysis has been applied to understand whether the 2013/07/02 (Mw=6.1)
has been triggered by 2013/01/21 earthquake (Mw=6.1) the proximity to failure
on the Aceh segment of Sumatra Fault Zone (SFZ). We examine the problem of how
one earthquake might trigger another using Coulomb stress changes plotting. To
plot the Coulomb stress changes, we used Global CMT data for the both
earthquakes and used GEOFON data for manually revised epicenters of its
aftershocks. The earthquakes are located on Aceh segment of the historic no
recorded large earthquake. Coulomb stress changes modeling of the both
earthquakes and plot their aftershocks. Surprisingly, the 2013/07/02 earthquake
is located on increasing Coulomb stress changes region of 2013/01/21 earthquake
plotting. Here explain that the 2013/07/02 earthquake has been triggered by the
2013/01/21 earthquake. Further, the two aftershocks of the 2013/07/02 earthquake
is located on increasing Coulomb stress changes region of 2013/07/02 earthquake
plotting. So that, the aftershocks has been triggered by increasing Coulomb
stress changes of the 2013/07/02 earthquake.
Penulis: Madlazim
Kode Jurnal: jpfisikadd151034
