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利用水位同震阶变资料反演汶川8级地震应力场变化
The adjustment variation of Wenchuan 8 earthquake co-seismic stress field inversed by the observational data of water level
- DOI:
- 作者:
- 杨明波 马霁 柴金翼
- 作者单位:
- 中国北京100080北京市地震局
- 关键词:
- 汶川8.0地震；含水层；区域应力场；应力调整；水位同震阶变
Wenchuan 8 earthquake，Aquifer，stress field, stress adjust, Step variation in water level
- 摘要:
-
分析汶川地震的水位同震响应阶变变化发现，地震时应力场的调整与中国大陆板块的背景应力场受力状态基本一致，只是对华北和西南地区有所加强，对西北和东南有所减弱。可见，汶川地震释放积累的应力后，对于震后大陆的应力场变化有一定调整作用。
This paper Analysis co-seismic water level step variations of 131 wells at the time of Wenchuan earthquake, the results show that the stress adjustment of Wenchuan earthquake are basically consistent with the background stress field of the Chinese continental plates, Just for the north and southwest China, there are few strengthen, and few weaken for the northwest and southeast. It show that Wenchuan 8 earthquake bring Certain adjustments for the mainland stress field after the Wenchuan earthquake released the accumulated stress,
