Japan Geoscience Union Meeting 2019

Presentation information

[E] Oral

S (Solid Earth Sciences ) » S-SS Seismology

[S-SS05] Induced and triggered seismicity: case-studies, monitoring and modeling techniques

Sun. May 26, 2019 1:45 PM - 3:15 PM A04 (TOKYO BAY MAKUHARI HALL)

convener:Luca Urpi(Swiss Seismological Service - ETH Zurich), Bogdan Enescu(Department of Geophysics, Kyoto University), Yosuke Aoki(Earthquake Research Institute, University of Tokyo), Francesco Grigoli(ETH-Zurich, Swiss Seismological Service), Chairperson:Luca Urpi(ETH-Zurich; Swiss Seismological Service), Bogdan Enescu(Graduate Schoold of Science, Kyoto University), Francesco Grigoli(ETH-Zurich; Swiss Seismological Service), Yosuke Aoki

2:15 PM - 2:30 PM

[SSS05-03] Seismicity induced by Multi-cycle operation of Hutubi underground gas storage, Xinjiang, China

*Baoshan Wang1,2, Bo Zhang2, Zhanbo Ji2, Jinxin Hou2, Lu Li2 (1.University of Science and Technology of China, 2.Institute of Geophysics, China Earthquake Administration)

Keywords:Underground Gas Storage, Multi-cycle operation, Induced Seismicity

In 2013, one of the largest UGSs in China, the Hubuti UGS started to operate in Xinjiang, northwestern China. To monitor the seismicity near the Hutubi UGS and adjacent area, we deployed 36 portable broadband 3-component seismic stations, complementing four permanent seismic stations within 100 km from the Hutubi UGS. We calibrate the 1-D model with the active source record and relocated the events which are used as template to search for the missed events with the Match and Located method. In the period of January 2013 to December 2017, we detected and located more than 3000 earthquakes, 5 times more than the catalog. Our results suggest a possible correlation of seismicity and the gas injection/extraction process, and it is spread to 10-20 km in the last two cycles. Control the rate of gas injection and extraction can reduce the risk from seismic events.