[1]JIANG Fengyun,ZHU Liangyu,JI Lingyun,et al.Regional Crustal Horizontal Deformation Characteristics before Yunnan Tonghai MS5.0 Earthquakes in 2018[J].Journal of Seismological Research,2018,41(04):511-516.
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Regional Crustal Horizontal Deformation Characteristics before Yunnan Tonghai MS5.0 Earthquakes in 2018
Journal of Seismological Research[ISSN 1000-0666/CN 53-1062/P] Volume:
41
Number of periods:
2018 04
Page number:
511-516
Column:
Public date:
2018-10-20
- Title:
- Regional Crustal Horizontal Deformation Characteristics before Yunnan Tonghai MS5.0 Earthquakes in 2018
- Keywords:
- Tonghai MS5.0 earthquake; crust deformation; GPS; strain rate field
- CLC:
- P315.725
- DOI:
- -
- Abstract:
- According to crustal long-term horizontal movement field of GPS observation from 1991 to 2015,we studied the deformation features of crustal horizontal movement in epicenter area before two Yunnan Tonghai MS5.0 earthquakes occurred on Aug.13 and Aug.14 in 2018.Combined with the tectonic,the results show that:(1)The Tonghai earthquakes occurred in the region where the crustal horizontal movement was hindered and the strain energy accumulated rapidly,that is,the high value area of the plane strain rate and the maximum shear strain rate.The region is also located at the intersection of Xiaojiang Fault system and Qujiang Shiping fault system.According to the characteristics of background deformation,the study area still has a high risk of moderate-strong earthquake in the future.(2)Another rapid strain accumulation zone is lying at the area between Gejiu and Mile,we should pay attention to the possibility of moderate-strong strong earthquakes in the future.
- References:
- -
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Last Update:
2018-10-30