Abstract
We have successfully relocated 74 out of 89 aftershocks until December 19, 2016, by using hypocenter double-difference method. We also have conducted focal mechanism analysis to estimate the type of fault slip. The results indicate improvement in hypocenter location, where the initial earthquakes focus depth at a fixed depth of 10 km have been updated and have described the patterns of active fault in the area trending Northwest-Southeast. The validity through the histogram of travel-time residual shows fairly good data processing where the residual value is close to zero (t.obs - t.cal ~ 0). Based on focal mechanism solutions of mainshock and two selected aftershocks, the type of fault is right lateral strike-slip.
Highlights
On December 7th, 2016 an earthquake occurred in Pidie Jaya, Aceh, Indonesia
According to Indonesian Agency for Meteorological, Climatological and Geophysics (BMKG), this earthquake occurred at 05:03:36 a.m with a magnitude Mw 6.5, the epicenter is located at 5.29o N, 96.22o E with a depth of 15 km
The velocity model of IASPEI91 was used for the hypocenter determination in BMKG catalogue (Kennett and Engdahl, 1991) by using SeisComP3 Program (GFZ)
Summary
On December 7th, 2016 an earthquake occurred in Pidie Jaya, Aceh, Indonesia. According to Indonesian Agency for Meteorological, Climatological and Geophysics (BMKG), this earthquake occurred at 05:03:36 a.m with a magnitude Mw 6.5, the epicenter is located at 5.29o N, 96.22o E with a depth of 15 km. The authority has been reported at least 102 fatalities and 700 people were injured and thousands of buildings were damaged. About a minute after the mainshock, followed by sequences aftershocks until a few weeks later
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