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Treffer: Seismic source analysis of the destructive earthquake November 21, 2022, M w 5.6 Cianjur (Indonesia) from relocated aftershock.

Title:
Seismic source analysis of the destructive earthquake November 21, 2022, M w 5.6 Cianjur (Indonesia) from relocated aftershock.
Authors:
Zulfakriza Z; Global Geophysics Research Group, Faculty of Mining and Petroleum Engineering, Institut Teknologi Bandung, Bandung, 40132, Indonesia. zulfakriza@itb.ac.id.; Research Center for Disaster Mitigation, Institut Teknologi Bandung, Bandung, 40132, Indonesia. zulfakriza@itb.ac.id., Nugraha AD; Global Geophysics Research Group, Faculty of Mining and Petroleum Engineering, Institut Teknologi Bandung, Bandung, 40132, Indonesia.; Research Center for Disaster Mitigation, Institut Teknologi Bandung, Bandung, 40132, Indonesia., Heryandoko N; Indonesian Meteorological Climatological and Geophysical Agency, Jakarta, Indonesia.; Geophysical Engineering Study Program, Faculty of Mining and Petroleum Engineering, Institut Teknologi Bandung, Bandung, 40132, Indonesia., Ry RV; Global Geophysics Research Group, Faculty of Mining and Petroleum Engineering, Institut Teknologi Bandung, Bandung, 40132, Indonesia.; Geophysical Engineering Study Program, Faculty of Mining and Petroleum Engineering, Institut Teknologi Bandung, Bandung, 40132, Indonesia., Muttaqy F; Research Center for Geological Disaster, National Research and Innovation Agency (BRIN), Bandung, 40135, Indonesia., Andika A; Indonesian Meteorological Climatological and Geophysical Agency, Jakarta, Indonesia., Azhari MF; Earth Science Study Program, Faculty of Earth Science and Technology, Institut Teknologi Bandung, Bandung, 40132, Indonesia., Putra AS; Research Center for Disaster Mitigation, Institut Teknologi Bandung, Bandung, 40132, Indonesia.; Research Center for Geological Disaster, National Research and Innovation Agency (BRIN), Bandung, 40135, Indonesia., Palgunadi KH; Geophysical Engineering Department, Insitut Teknologi Sepuluh Nopember, Surabaya, Indonesia.; Swiss Seismological Service (SED), ETH Zürich, Zürich, Switzerland., Cummins PR; Global Geophysics Research Group, Faculty of Mining and Petroleum Engineering, Institut Teknologi Bandung, Bandung, 40132, Indonesia.; Research School of Earth Sciences, The Australian National University, Canberra, Australia., Supendi P; Indonesian Meteorological Climatological and Geophysical Agency, Jakarta, Indonesia.; Department of Earth Sciences - Bullard Labs, University of Cambridge, Cambridge, CB30EZ, UK., Lesmana A; Geophysical Engineering Study Program, Faculty of Mining and Petroleum Engineering, Institut Teknologi Bandung, Bandung, 40132, Indonesia., Sahara DP; Global Geophysics Research Group, Faculty of Mining and Petroleum Engineering, Institut Teknologi Bandung, Bandung, 40132, Indonesia.; Research Center for Disaster Mitigation, Institut Teknologi Bandung, Bandung, 40132, Indonesia., Puspito NT; Global Geophysics Research Group, Faculty of Mining and Petroleum Engineering, Institut Teknologi Bandung, Bandung, 40132, Indonesia.; Research Center for Disaster Mitigation, Institut Teknologi Bandung, Bandung, 40132, Indonesia.
Source:
Scientific reports [Sci Rep] 2024 May 27; Vol. 14 (1), pp. 12142. Date of Electronic Publication: 2024 May 27.
Publication Type:
Journal Article
Language:
English
Journal Info:
Publisher: Nature Publishing Group Country of Publication: England NLM ID: 101563288 Publication Model: Electronic Cited Medium: Internet ISSN: 2045-2322 (Electronic) Linking ISSN: 20452322 NLM ISO Abbreviation: Sci Rep Subsets: PubMed not MEDLINE; MEDLINE
Imprint Name(s):
Original Publication: London : Nature Publishing Group, copyright 2011-
References:
ACM Trans Math Softw. 2014 Feb;40(2):. (PMID: 25328255)
Entry Date(s):
Date Created: 20240527 Latest Revision: 20240530
Update Code:
20250114
PubMed Central ID:
PMC11130185
DOI:
10.1038/s41598-024-60408-9
PMID:
38802381
Database:
MEDLINE

Weitere Informationen

A destructive shallow earthquake with a magnitude of 5.6 struck Cianjur, West Java, Indonesia on November 21, 2022. This earthquake resulted in 602 casualties and the collapse of over 67,504 residences. The day after the mainshock, we deployed 19 temporary seismic stations to monitor aftershocks for a period of 30 days. We manually picked arrival times for 4499 P-waves and 3419 S-waves and determined locations for 514 events. Following the velocity model update, phase refinement through waveform cross correlation, and relocation using double-difference methods, we were able to determine 442 well-defined hypocenters of the aftershocks. We identified two clusters of aftershocks: one in the NNW-SSE direction, with a length of about 8 km, and another in the WSW-ENE direction, with a length of around 6 km. The seismogenic zone of these clusters ranges from a depth of 3 to 13 km. Our interpretation suggests that these clusters may indicate a conjugate fault. It is possible that the mainshock (Mw5.6) Cianjur earthquake on November 21, 2022 occurred on the WSW-ENE direction with sinistral movement.
(© 2024. The Author(s).)