Automatic earthquake detection and phase picking in Muong Te, Lai Chau region: an application of machine learning in observational seismology in Vietnam

Nghia Nguyen Cong; Duong Nguyen Van; Giang Ha Thi; Van Dinh Quoc; Minh Nguyen Le; Bor-Shouh  Huang; Truyen Pham The; Hung Nguyen Tien; Khoi Le Quang; Hung Nguyen Huu

doi:10.15625/2615-9783/17253

Author affiliations

Authors

Nguyen Cong Nghia 1-Taiwan International Graduate Program Earth Sciences System (TIGP-ESS), Academia Sinica, Taiwan; 2- Department of Earth Sciences, National Central University, Taiwan
Nguyen Van Duong 1- Institute of Geophysics, Vietnam Academy of Science and Technology, Hanoi, Vietnam; 2- Graduate University of Science and Technology (GUST), Vietnam Academy of Science and Technology, Hanoi, Vietnam
Ha Thi Giang Institute of Geophysics, Vietnam Academy of Science and Technology, Hanoi, Vietnam
Dinh Quoc Van Institute of Geophysics, Vietnam Academy of Science and Technology, Hanoi, Vietnam
Nguyen Le Minh 1- Institute of Geophysics, Vietnam Academy of Science and Technology, Hanoi, Vietnam; 2- Graduate University of Science and Technology (GUST), Vietnam Academy of Science and Technology, Hanoi, Vietnam; 3- Department of International Cooperation, Vietnam Academy of Science and Technology, Hanoi, Vietnam
Bor-Shouh Huang Institute of Earth Sciences, Academia Sinica, Taipei, Taiwan
Pham The Truyen Institute of Geophysics, Vietnam Academy of Science and Technology, Hanoi, Vietnam
Nguyen Tien Hung 1- Institute of Geophysics, Vietnam Academy of Science and Technology, Hanoi, Vietnam; 2- Graduate University of Science and Technology (GUST), Vietnam Academy of Science and Technology, Hanoi, Vietnam
Le Quang Khoi Institute of Geophysics, Vietnam Academy of Science and Technology, Hanoi, Vietnam
Nguyen Huu Hung Department of Natural Science Hung Vuong University, Viet Tri, Phu Tho, Vietnam

DOI:

https://doi.org/10.15625/2615-9783/17253

Keywords:

Muong Te earthquake, machine learning, EQ Tranformer, Dien Bien Phu fault, upstream Da river fault, earthquake monitoring

Abstract

We applied the automatic detection and picking of P- and S-wave to one-year continuous raw seismic data from 17 seismic stations in the Muong Te area, northwestern Vietnam. The deep learning picker, Earthquake Transformer, has performed automatic picking of P- and S-waves, and phase association, then we located the earthquakes using Hypoinverse and NonLinLoc programs. The newly derived catalog consisted of 893 events, which is significantly higher than the number of events in the manual catalog. From this new catalog, we can observe more earthquakes related to the Muong Te M_L 4.9 earthquake on June 16, 2020, and the earthquake activity in other faults such as the Dien Bien Phu and Muong Nhe faults. The extended catalog can further study the seismogenesis and the seismic velocity structure of the crust beneath northwestern Vietnam.

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