Jurnal Geofisika
Vol 15 No 3 (2017): Jurnal Geofisika

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))

Article Info

Publish Date
15 Nov 2017

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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Journal Info
Jurnal Geofisika
Website

Abbrev

jurnal-geofisika

Publisher

Himpunan Ahli Geofisika Indonesia

Subject

Earth & Planetary Sciences Energy Physics

Description

Jurnal Geofisika [e-ISSN : 2477-6084] is a scientific journal published by Himpunan Ahli Geofisika Indonesia (HAGI). This journal is referenced, each paper was assessed and evaluated by editors and reviewers who are experts in the relevant fields and come from education institutions and industry, ...