Relocation and Focal Mechanism of Aftershocks Pidie Jaya Earthquake (Mw6.5) Dec 7th, 2016 using BMKG Network

  • Pepen Supendi Badan Meteorologi, Klimatologi, dan Geofisika (BMKG)
  • Andri D. Nugraha Institut Teknologi Bandung (ITB)
  • Tony Agus Wijaya Badan Meteorologi, Klimatologi, dan Geofisika (BMKG)

Keywords

Relocation, Focal Mechanism, Fault

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.

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Published
Nov 15, 2017
How to Cite
SUPENDI, Pepen; NUGRAHA, Andri D.; WIJAYA, Tony Agus. Relocation and Focal Mechanism of Aftershocks Pidie Jaya Earthquake (Mw6.5) Dec 7th, 2016 using BMKG Network. Jurnal Geofisika, [S.l.], v. 15, n. 3, p. 17-20, nov. 2017. ISSN 2477-6084. Available at: <https://jurnal-geofisika.or.id/index.php/jurnal-geofisika/article/view/19>. Date accessed: 03 apr. 2020. doi: http://dx.doi.org/10.36435/jgf.v15i1.19.