[1]XIE Chaodi,WANG Yingnan,YAN Ruyu,et al.Study on Stress Triggering of 2014 Kangding MS6.3 and MS5.8 Earthquakes[J].Journal of Seismological Research,2021,44(01):9-14.
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Study on Stress Triggering of 2014 Kangding MS6.3 and MS5.8 Earthquakes
Journal of Seismological Research[ISSN 1000-0666/CN 53-1062/P] Volume:
44
Number of periods:
2021 01
Page number:
9-14
Column:
Public date:
2021-01-15
- Title:
- Study on Stress Triggering of 2014 Kangding MS6.3 and MS5.8 Earthquakes
- Keywords:
- Kangding earthquake; Coulomb failure stress change; earthquake triggering; fault interaction effect
- CLC:
- P315.7
- DOI:
- -
- Abstract:
- In this study,the problem of earthquake triggering is discussed by using the MS6.3 earthquake on Nov.22,2014 and the MS5.8 earthquake on Nov.25,2014 in Kangding,Sichuan Province.Firstly,based on the regional tectonic stress field in this area,we calculated the spatial distributions of static stress changes caused by the Kangding MS6.3 and MS5.8 earthquakes on the optimal fault planes,and studied the stress triggering effect of the main shock to the aftershocks.Furthermore,we analyzed the stress loading and unloading effects of the two main-shocks on the surrounding faults by calculating the Coulomb rupture stress changes on the surrounding faults.The results show that the joint action of the two main earthquakes controls the evolution trend of the subsequent seismicity.Moreover,the Coulomb failure stress change produced by the Kangding MS6.3 earthquake has a good correlation with the aftershocks,and the triggering effect on the subsequent events is dominant.In addition,the southern segment of the Xianshuihe fault and the Anninghe fault are subjected to certain stress loading by two earthquakes,and the seismic activity may be strengthened in the future.
- References:
- -
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Last Update:
2021-01-15