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Huang Hao, Fu Hong, Sha Chengning, Wang Peiling. 2017: Relocation of the 2016 MS6.4 Menyuan, Qinghai earthquake. Acta Seismologica Sinica, 39(2): 176-187. DOI: 10.11939/jass.2017.02.002
Citation: Huang Hao, Fu Hong, Sha Chengning, Wang Peiling. 2017: Relocation of the 2016 MS6.4 Menyuan, Qinghai earthquake. Acta Seismologica Sinica, 39(2): 176-187. DOI: 10.11939/jass.2017.02.002
shu

Relocation of the 2016 MS6.4 Menyuan, Qinghai earthquake

  • 1.

    Earthquake Administration of Qinghai Province, Xining 810001, China

  • 2.

    Earthquake Administration of Yunnan Province, Kunming 650224, China

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  • Received Date: June 14, 2016
  • Revised Date: July 19, 2016
  • Published Date: February 28, 2017
    Graphical Abstract
    • Abstract
  • The rupture initiation point and hypocentoid of Menyuan MS6.4 earthquake, which occurred on January 21, 2016, were imaged out by means of time-reversal imaging technique (TRIT) using velocity models and waveforms from regional seismic network and China Seismic Array. The results show that, origin time of Menyuan MS6.4 earthquake was 01:13:11 on January 21, 2016 and rupture initiation point was at (37.67°N, 101.61°E), and the focal depth was 9.41 km. The migration of hypocentroid can be divided into two stages of 1--6 s and 7--10 s, which basically located at an inclined plane dipping to NE with an inclination about 75°. According to the characteristic of hypocentroid migration, we speculate that the nodal plane with strike of 335°, dip of 56° and rake of 97° is the rupture plane of Menyuan earthquake. Considering large rake angle, Menyuan earthquake shows characteristic of thrust tectonic activities with high dip angle, so we are likely to convince that Menyuan earthquake resulted from new activity of north Lenglongling secondary thrust fault with high dip angle.
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    • References (36)
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