Details of the Abstract
| Title of paper |
Study on the relationship between pre-earthquake variation of resistivity and regional stress field |
| List of authors | Ji Tang，Lifeng Wang，Bing Han，Zeyi Dong and Shun Yang |
| Affiliation(s) | Institute of Geology, China Earthquake Administration |
| Summary | The occurrence of earthquakes is closely related to tectonic stress. MT can obtain electrical structures related to fluids and their variations at different depths. The deep fluid content and its changes can reflect the underground stress state. In the paper, We use the long-term continuous observation data of MT response over time during the occurrence of two moderate to strong earthquake swarms in Yunnan, and analyzes their pre earthquake characteristics. It is found that the variation of apparent resistivity in pre-earthquake is closely related to regional stress. About 2 month before the earthquake, there was a significant decrease in the apparent resistivity of the stress stretching direction in the regional stress extension zone, while the performance in the vertical direction was not significant change. This variation gradually disappeared in impending time. |
| Session Keyword | 5.0 Monitoring: of GICs, environmental, tectonic and geomorphological hazards |
| File upload |
5.0_study_on_the_relationship_tang_02.pdf
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