Identification of the Activated Fault Plane of the 16 June 2021 Earthquake (Mw=5.9) in the Banda Sea

DOI

10.2991/aer.k.211215.097How to use a DOI?

Keywords

Rupture directivity; Activated fault plane; Banda Arc; Rupture duration; P-wave

Abstract

On 16 June 2021, a moderate earthquake with Mw 5.9 occurred in the Banda Sea, precisely at the top of the Banda Arc. The fault plane mechanism in this area is still not well identified, and this problem can be solved by determining the activated fault plane. In this research, the activated fault plane was based on the estimation of rupture directivity of the earthquake using the curve fitting method between observed and calculated P-wave rupture duration data. The maximum epicentral distance between the station and the epicentre of the earthquake is 40°. The number of seismic stations used is 33 stations with good azimuthal coverage. The rupture directivity of the earthquake is towards the south-southwest (SSW) with an azimuth of 196.5° ± 3.3°. This research has activated fault plane results validated using five aftershocks epicentres from USGS and NP1 CMT catalogue from GEOFON. The consistent NP is NP1 with strike/dip/slip values, respectively as follows 217/57/-85. This research also revealed that the earthquake located at the top of the Band Arc had an SSW-NNE fault orientation.

Copyright

© 2021 The Authors. Published by Atlantis Press International B.V.

Open Access

This is an open access article under the CC BY-NC license.

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TY  - CONF
AU  - Muhammad N. Fahmi
AU  - Madlazim
AU  - Dyah P. Sari
PY  - 2021
DA  - 2021/12/16
TI  - Identification of the Activated Fault Plane of the 16 June 2021 Earthquake (Mw=5.9) in the Banda Sea
BT  - Proceedings of the International Joint Conference on Science and Engineering 2021 (IJCSE 2021)
PB  - Atlantis Press
SP  - 574
EP  - 579
SN  - 2352-5401
UR  - https://doi.org/10.2991/aer.k.211215.097
DO  - 10.2991/aer.k.211215.097
ID  - Fahmi2021
ER  -