Abstract
AbstractOn 18 September 2022, the MW 6.9 Chihshang earthquake struck the south half of the Longitudinal Valley, Taiwan, and caused severe damage. A precise and rapid report for the distribution of aftershock sequence after a devastating earthquake provides key information for deciphering the seismogenic structure in the source region. The utilization of deep-learning methodologies for earthquake event detection offers a significant acceleration in data analysis. In this study, we use SeisBlue, a deep-learning platform/package, to extract the whole earthquake sequence from September to October 2022, including the MW 6.5 Guanshan foreshock, the MW 6.9 mainshock, over 14,000 aftershocks, and 866 foal mechanisms from two sets of broadband networks. After applying hypoDD for earthquakes, the distribution of aftershock sequence clearly depicts not only the Central Range Fault and the Longitudinal Valley Fault but also several local, shallow tectonic structures that have not been observed along the southern Longitudinal Valley.
Funder
National Science and Technology Council
National Science and Technology council
Publisher
Springer Science and Business Media LLC
Reference53 articles.
1. Angelier J, Chu HT, Lee JC, Hu JC (2000) Active faulting and earthquake hazard: the case study of the Chihshang fault, Taiwan. Jx Geodyn 29(3–5):151–185
2. Anikiev D, Birnie C, Bin Waheed U, Alkhalifah T, Gu C, Verschuur DJ, Eisner L (2023) Machine learning in microseismic monitoring. Earth Sci Rev 239:104371
3. Central Geological Survey in Taiwan (2022). 2022 Chihshang Earthquake Sequence Geological Survey Report (in Chinese). https://faultnew.moeacgs.gov.tw/Reports/More/63cc5a4b2020403d9f79d3c33a7aba0c. Accessed 22 Aug 2023
4. Central Weather Administration (CWA, Taiwan) (2012) Central weather administration seismographic network. Int Feder Dig Seismogr Netw. https://doi.org/10.7914/SN/T5
5. Chang CP, Angelier J, Huang CY (2000) Origin and evolution of a melange: the active plate boundary and suture zone of the Longitudinal Valley, Taiwan. Tectonophysics 325(1–2):43–62
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