[1]CHEN Qifu,LI Le,JIANG Jinzhong.Deep Deformation Pattern of Strong Earthquakes in Mainland China[J].Journal of Seismological Research,2020,43(02):232-240.
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Deep Deformation Pattern of Strong Earthquakes in Mainland China
Journal of Seismological Research[ISSN 1000-0666/CN 53-1062/P] Volume:
43
Number of periods:
2020 02
Page number:
232-240
Column:
Public date:
2020-06-10
- Title:
- Deep Deformation Pattern of Strong Earthquakes in Mainland China
- CLC:
- P315.72
- DOI:
- -
- Abstract:
- In view of problems of the “inaccessible” deep Earth and “non-frequent” strong earthquakes in the earthquake prediction,this paper finalizes a deep deformation pattern of strong earthquake cycles in mainland China based on the comparative analysis of the slip rates inferred from repeating earthquakes and from surface GPS and geological data by piecing together slip rate‘snapshots’ from different stages of the earthquake cycle.Slip rate increases with depth and accelerated slip were thought to have preceded a number of recent large subduction zone earthquakes and the 2008 Wenchuan earthquake,and repeating earthquakes may document short-term precursory slip at depth.We suggest that slip rates at seismogenic depths are of critical importance in seismic hazard analysis.Repeating earthquakes can be regarded as “deep creepmeters” that measure the in-situ deep slip rate of active faults.The potential earthquake hazard of locked faults with unusually high inferred deep slip rates should be paid more attention.
- References:
- -
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Last Update:
2020-06-10