Open AccessEarthquake Swarm Analysis around Mt. Salak, West Java, Indonesia, Using BMKG Data from August 10 to November 24, 2019
Author(s) -
Pepen Supendi,
Nanang T. Puspito,
Andri Dian Nugraha,
Sri Widiyantoro,
Chalid Idham Abdullah,
- Daryono,
Dwikorita Karnawati,
Supriyanto Rohadi,
Zulfakriza Zulfakriza,
David P. Sahara
Publication year - 2021
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/873/1/012002
Subject(s) - earthquake swarm , seismology , swarm behaviour , geology , volcano , hypocenter , java , tectonics , induced seismicity , mathematical optimization , mathematics , computer science , programming language
Earthquake swarms commonly come approximately active tectonic and volcanic area. Interestingly, the swarm events occurred ~23 km southwest from Mt. Salak-Bogor, West Java, Indonesia, from August 10 to November 24, 2019, and were recorded by local/regional network of the Indonesian Agency for Meteorology, Climatology, and Geophysics (BMKG). Our previous study showed that in this area a destructive M L 4.6 earthquake with thrust faulting occurred on September 8, 2012. The double-difference method was applied to update the hypocenter locations from the BMKG data. In the time period of ~3.5 months, we relocated 79 swarm events with ~9.4 km depth average for local magnitude (M L ) 2.2 to 4.2. The source mechanism result for selected events shows a strike-slip faulting. Our interpretation is that these swarm events are probably related to stress change due to volcano-tectonic activity.