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Zhang Yunyun, Tang Qijia, Huang Jingtang. 2019: Remote triggering of non-volcanic tremor in southern Taiwan. Acta Seismologica Sinica, 41(5): 633-645. DOI: 10.11939/jass.20190017
Citation: Zhang Yunyun, Tang Qijia, Huang Jingtang. 2019: Remote triggering of non-volcanic tremor in southern Taiwan. Acta Seismologica Sinica, 41(5): 633-645. DOI: 10.11939/jass.20190017
shu

Remote triggering of non-volcanic tremor in southern Taiwan

  • 1.

    Institute of Geophysics and Geomatics，China University of Geosciences （Wuhan），Wuhan 430074，China

  • 2.

    Hubei Subsurface Multi-Scale Imaging Key Laboratory，Wuhan 430074，China

  • 3.

    State Key Laboratory of Geological Processes and Mineral Resources，China University of Geosciences （Wuhan），Wuhan 430074，China　　　　　　

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  • Received Date: January 24, 2019
  • Revised Date: March 19, 2019
  • Available Online: October 15, 2019
  • Published Date: August 31, 2019
    Graphical Abstract
    • Abstract
  • We selected three-hour continuous waveforms after 38 MW≥7.5 earthquakes with epicentral distance larger than 1 000 km during 2011 to 2016 in Taiwan region of China to investigate whether it has triggered non-volcanic tremors （NVTs） by using visual identification. Out of the 38 earthquakes, we identified four teleseismic events which triggered NVTs with duration ranging from 300 s to 500 s. Using grid search, four tremor sources were located in the southern Central Range in Taiwan and the focal depth ranges from 21 to 53 km. Based on the local geophysical observation data, we proposed that the transient stress change induced by surface wave of large teleseisms could lead to the fault creep, which is the critical factor for tremor generation.
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