[1]ZHANG Yong,HONG Min,CUI Xingping,et al.Evaluation of Near Field Activity in Xiaojiang Fault Zone[J].Journal of Seismological Research,2018,41(03):375-380.
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Journal of Seismological Research[ISSN 1000-0666/CN 53-1062/P] Volume:
41
Number of periods:
2018 03
Page number:
375-380
Column:
Public date:
2018-08-20
- Title:
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Evaluation of Near Field Activity in Xiaojiang Fault Zone
- Author(s):
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ZHANG Yong; HONG Min; CUI Xingping; GUO Huiwen; SHAO Desheng
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(Yunnan Earthquake Agency,Kunming 650224,Yunnan,China)
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- Keywords:
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Xiaojiang fault zone; strain analysis; near-field activity; segmentation characteristics
- CLC:
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P315.725
- DOI:
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- Abstract:
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The near-field deformation data of the faults from 2009 to 2018 were used to solve the results of maximum shear strain rate and surface strain rate of near-field in different sections in Xiaojiang fault zone by the least squares method of strain parameters.The results show that the maximum shear strain rate and surface strain rate on the belt in Xiaojiang fault are different from each segment.In a whole,the maximum shear strain rate ranges from 1.03×10-6/a to 4.10×10-6/a as well as the surface strain rate are(-1.18~0.33)×10-6/a.The fault exhibits the segmental activity characteristics of the strong shearing ductility in the northern section,weak shearing in the middle section,strong shearing and squeezing activities in the southern section.Further analysis shows that the mid-south section of the fault is a strain accumulation section.The seismic hazard of the segment is higher than that of the other segments.