[1]JIANG Fengyun,ZHU Liangyu,LI Yujiang.Study of the Co-seismic and post-seismic deformation Deduced by the Wenchuan earthquake in the Sichuan-Yunnan region by three dimensional viscoelastic finite element model[J].Journal of Seismological Research,2018,41(02):233-243.
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Study of the Co-seismic and post-seismic deformation Deduced by the Wenchuan earthquake in the Sichuan-Yunnan region by three dimensional viscoelastic finite element model
Journal of Seismological Research[ISSN 1000-0666/CN 53-1062/P] Volume:
41
Number of periods:
2018 02
Page number:
233-243
Column:
Public date:
2018-04-20
- Title:
- Study of the Co-seismic and post-seismic deformation Deduced by the Wenchuan earthquake in the Sichuan-Yunnan region by three dimensional viscoelastic finite element model
- Keywords:
- the Wenchuan earthquake; Finite elements model(FEM); viscoelastic relaxation; Sichuan-Yunnan region
- CLC:
- P315.725
- DOI:
- -
- Abstract:
- Considering the characters of horizontal blocks and vertical layers of the crust and the asymmetry of the coseismic static dislocation on fault plane of the Wenchuan earthquake,we study the co-seismic and post-seismic effect deduced by the Wenchuan earthquake in the Sichuan-Yunnan region by three dimensional viscoelastic finite element model. The results indicate:(1)horizontal deformation due to the medium viscoelastic relaxation effect reaches 20mm in the Sichuan-Yunnan block ten years after the earthquake.vertical deformation due to the medium viscoelastic relaxation effect is approximately 0～4mm in most of the Sichuan-Yunnan block,and is smaller than the horizontal deformation.(2)post-seismic horizontal and vertical deformation gradient values are more obvious in the Xianshuihe and Dongkunlun faults.(3)we calculate the horizontal main stress and Coulomb failure stress changes in main faults,which agree with the distribution of the seismicity distribution in Sichuan-Yunnan regions.
- References:
- -
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Last Update:
2018-04-23