[1]LI Ning,ZHU Liangyu,LIU Lei.Study on Present-day Locking Degree and Seismic Hazard of the Lijiang-Xiaojinhe Fault Zone[J].Journal of Seismological Research,2018,41(02):244-250.
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Study on Present-day Locking Degree and Seismic Hazard of the Lijiang-Xiaojinhe Fault Zone
Journal of Seismological Research[ISSN 1000-0666/CN 53-1062/P] Volume:
41
Number of periods:
2018 02
Page number:
244-250
Column:
Public date:
2018-04-20
- Title:
- Study on Present-day Locking Degree and Seismic Hazard of the Lijiang-Xiaojinhe Fault Zone
- Keywords:
- Lijiang-Xiaojinhe fault zone; back-slip dislocation inversion of DEFNODE; fault locking degree; slip deficit rate; minor earthquakes
- CLC:
- P315.725
- DOI:
- -
- Abstract:
- Based on the GPS horizontal velocity field of 2009-2015 and the back-slip dislocation model of DEFNODE,we inverted for fault locking degree and fault slip deficit of the Lijiang-Xiaojinhe fault zone,and analyzed the potential seismic danger combining with the results of relocated small earthquakes. The results show that the fit results of GPS horizontal observation value and the simulated value are consistent,and there is also a certain correlation between the distribution of minor earthquakes and the degree of fault locking. The inversion results show that the southern part of the Lijiang-Xiaojinhe fault zone is basically completely locked except the southernmost,and the fault slip deficit rate is relatively large,which has the potential danger of a large earthquake. The middle section of the Lijiang-Xiaojinhe fault is different from the south to north,and the southern is locked seriously,which is also almost completely locked,and the degree of locking of the northern fault is much weaker. And for the northern part of the Lijiang-Xiaojinhe fault zone,the locking degree is very weak. Besides the partial locked in the south,there is no strong locking state in other parts,and the fracture is basically transformed from the locking state to the creep state at a 5 km depth,and the fault slip deficit rate is relatively small,while the possibility of larger earthquakes in this section is much smaller.
- References:
- -
- Similar References:
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Last Update:
2018-04-23