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Pepen Supendi
Badan Meteorologi, Klimatologi, dan Geofisika (BMKG)
Earth & Planetary Sciences Energy Physics

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Relocation and Focal Mechanism of Aftershocks Pidie Jaya Earthquake (Mw6.5) Dec 7th, 2016 using BMKG Network Pepen Supendi; Andri D. Nugraha; Tony Agus Wijaya
Jurnal Geofisika Vol 15 No 3 (2017): Jurnal Geofisika
Publisher : Himpunan Ahli Geofisika Indonesia (HAGI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1668.997 KB) | DOI: 10.36435/jgf.v15i1.19

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.
Co-Authors Andri D. Nugraha Tony Agus Wijaya