[1]HU Xiaohui,SHENG Shuzhong,WAN Yongge,et al.Fault Plane Parameters of 2017 Jiuzhaigou MS7.0 Earthquake Determined by Aftershock Distribution[J].Journal of Seismological Research,2019,42(03):366-371.
Copy
Fault Plane Parameters of 2017 Jiuzhaigou MS7.0 Earthquake Determined by Aftershock Distribution
Journal of Seismological Research[ISSN 1000-0666/CN 53-1062/P] Volume:
42
Number of periods:
2019 03
Page number:
366-371
Column:
Public date:
2019-07-24
- Title:
- Fault Plane Parameters of 2017 Jiuzhaigou MS7.0 Earthquake Determined by Aftershock Distribution
- CLC:
- P315.1
- DOI:
- -
- Abstract:
- Based on the 4 035 relocated aftershock data of the 2017 Jiuzhaigou MS7.0 earthquake,we obtain the fault plane parameters of the earthquake by the method of determining the fault plane parameter according to the distribution of small earthquakes. Taking the sparse area of aftershocks as the boundry,the aftershocks are divided into north and south segments for segmentation fitting,and finally the seismogenic structure of the earthquake is determined. The results show that the parameters of the seismogenic fault of the Jiuzhaigou earthquake are as follows:the strike is 151.3°,the dip angle is 84.0°,the obtained parameters could be regarded as the first approximation of the fault plane parameter. The strike and dip angles of the north and south segments is 147.4° and 88.3°,169.2° and 76.8° respectively,which caused the aftershock sparse area. Combining with the surrounding structural features,we infer that the seismogenic fault of the Jiuzhaigou earthquake is a concealed fault extending northwest from the Huya fault.
- References:
- -
- Similar References:
Memo
-
Last Update:
2019-07-24