Identification of Fault Poso Earthquake Causes 2017 Mw 6.6 with Gradient Vertical Gravity Satellite Imagery

5th Geoinformation Science Symposium 2017

地球科学;计算机科学

Simamora, B.M.M.^1 ; Fajerianti, I.^1,2 ; Utaminingtyas, B.^1 ; Apriliaji, T.M.^1 ; Fatimah, A.^1 ; Nafi, K.^1

State College of Meteorology, Climatology and Geophysics, Indonesia^1

Meteorology, Climatology and Geophysics Agency, Indonesia^2

关键词: Absolute values;    Fault orientations;    Normal faults;    Poso;    Source mechanisms;    Vertical derivatives;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/98/1/012009/pdf
DOI  :  10.1088/1755-1315/98/1/012009

学科分类：计算机科学（综合）

来源: IOP

【 摘 要 】

May 29, 2017 a devastating earthquake occurred in the district of Poso, Central Sulawesi. This earthquake can be affected significantly by the people. Based on the analysis of the source mechanism, an earthquake caused by a normal fault around the graben zone of Palopo. The purpose of this research is to identify Earthquake-causing fault of Poso 2017 Mw 6,6 by using Second Vertical Derivative (SVD) analysis of gravity. The result of profiles line that bypass the alleged fault orientation indicates the existence of normal fault structure indicating the absolute value of the minimum SVD anomaly is relatively smaller than the maximum SVD anomaly value in the epicenter zone of the earthquake.