[1]WANG Guangming,LIU Zifeng,ZHAO Xiaoyan,et al.Relocation of Tonghai MS5.0 Earthquake Sequence in 2018 and Discussion of it's Seismogenic Fault[J].Journal of Seismological Research,2018,41(04):503-510.
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Relocation of Tonghai MS5.0 Earthquake Sequence in 2018 and Discussion of it's Seismogenic Fault
Journal of Seismological Research[ISSN 1000-0666/CN 53-1062/P] Volume:
41
Number of periods:
2018 04
Page number:
503-510
Column:
Public date:
2018-10-20
- Title:
- Relocation of Tonghai MS5.0 Earthquake Sequence in 2018 and Discussion of it's Seismogenic Fault
- Keywords:
- Tonghai MS5.0 earthquake; double-difference location algorithm; seismogenic fault; Mingxing-Erjie Fault
- CLC:
- P315.53
- DOI:
- -
- Abstract:
- Using catalog data and seismic waveform data recorded by the Yunnan Digital Seismic Network,we relocated Tonghai MS5.0 earthquake sequence with double-difference location algorithm.In the meantime,we inversed focal mechanism of the mainshocks with Seis_CAP program and improved grid point test method.After relocation,the epicentral location of Tonghai MS5.0 earthquake sequence exhibited in a narrow band along the NE-SW direction,and the predominant range of depth distribution was 3～12 km.The distance between two mainshocks was shorter after relocation,and the focal depth of two mainshocks were 11.08 km and 9.24 km respectively.The inversion results of focal mechanism show that the types of two MS5.0 mainshocks were both strike-slip earthquakes and the best fitting focal depts of them are 8.1 km and 6.4 km respectively.Based on the comprehensive analysis of the spatial distribution of Tonghai earthquake sequence after relocation,focal mechanism solutions and the geological data,we deduced that the seismogenic fault of Tonghai earthquake sequence may be the Mingxing-Erjie Fault or a hidden fault which was parallel to it in the western branch of the Xiaojiang Fault.
- References:
- -
- Similar References:
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Last Update:
2018-10-30