[1]ZHAO Jing,NIU Anfu,LI Qiang,et al.Study on Dynamic Characteristics of Fault Locking and Fault Slip Deficit in the Faults around the Longxi Block[J].Journal of Seismological Research,2016,39(03):351-358.
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Study on Dynamic Characteristics of Fault Locking and Fault Slip Deficit in the Faults around the Longxi Block
Journal of Seismological Research[ISSN 1000-0666/CN 53-1062/P] Volume:
39
Number of periods:
2016 03
Page number:
351-358
Column:
Public date:
2016-07-23
- Title:
- Study on Dynamic Characteristics of Fault Locking and Fault Slip Deficit in the Faults around the Longxi Block
- Keywords:
- the faults around the Longxi Block; negative dislocation inversion of DEFNODE; fault locking; slip deficit
- CLC:
- P315.7
- DOI:
- -
- Abstract:
- By using GPS horizontal velocity field data during 1999～2007 and 2009～2013 periods and the negative dislocation model of DEFNODE, we inverted the dynamic spatial distribution of fault locking and fault slip deficit in the faults around the Longxi Block before and after the Wenchuan earthquake, such as Haiyuan-Qilian Mountain Fault, Liupan Mountain Fault, Zhuanglang River Fault, and north fringe fault of west Qinling Mountain. Then we discussed the influence of Wenchuan earthquake on the faults and analyzed the seismic potential sections combining with seismic gaps and some other research. The results show that the Wenchuan earthquake possibly has some influence on the north fringe fault of west Qinling Mountain, because its middle-western segment is locked weekly and its middle-eastern segment is locked tightly after the earthquake. The locking of the other faults are almost same before and after the Wenchuan earthquake, which means that the earthquake has little influence on these faults. At present, Lenglongling Fault, Jinqiang River Fault, Zhuanglang River Fault, Liupan Mountain Fault and middle-western segment of the north fringe fault of west Qinling Mountain are locked tightly and their locking depth is about 20～25 km. These faults are seismic potential segments considering seismic gaps along the faults in the geological scale. The parallel fault slip deficit in the faults around the Longxi Block are all sinistral strike-slip deficit except that the Zhuanglang River Fault is dextral strike-slip deficit before and after the Wenchuan earthquake, and the vertical fault slip deficit of the faults are all compression deficit.
- References:
- -
- Similar References:
Memo
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Last Update:
1900-01-01