Using EH4 audio-magnetotelluric sounder to detect the gigantic Qiaojia paleo-landslide and its structural characteristics
In this study, we used the EH4 audio-magnetotelluric sounding, combining with the drilling data, to detect and define the spatial electrical properties and structural characteristics of the Qiaojia paleo-landslide. Based on the detection results, the average depth of the main sliding surface is cons...
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | zho |
| Published: |
Institute of Geomechanics, Chinese Academy of Geological Sciences
2021-04-01
|
| Series: | Dizhi lixue xuebao |
| Subjects: | |
| Online Access: | https://journal.geomech.ac.cn//article/doi/10.12090/j.issn.1006-6616.2021.27.02.029 |
| _version_ | 1797893856712196096 |
|---|---|
| author | LI Zhong WU Zhonghai WANG Jinming ZHANG Xiaobing FENG Zhen HU Mengmeng |
| author_facet | LI Zhong WU Zhonghai WANG Jinming ZHANG Xiaobing FENG Zhen HU Mengmeng |
| author_sort | LI Zhong |
| collection | DOAJ |
| description | In this study, we used the EH4 audio-magnetotelluric sounding, combining with the drilling data, to detect and define the spatial electrical properties and structural characteristics of the Qiaojia paleo-landslide. Based on the detection results, the average depth of the main sliding surface is considered to be 250 m and six faults (F1-F6) were identified, among which the Xiaojiang fault zone (F1) is the main active fault. Meanwhile, it is inferred from the sounding results and drill date that the terrace along the Jinsha River fall into four layers from the surface (Qh) to the deep, namely the sandy clay layer, gravel layer, broken limestone layer, and complete limestone bedrock. The broken limestone layer and the complete limestone bedrock are in the bedrock outcrop area from the surface to the deep. The comprehensive analysis shows that the paleo-landslide is temporarily stable at present, but along with large earthquake activity in the north section of Xiaojiang fault zone in the future, whether the paleo-landslide is likely to revive or similar paleo-landslides will reoccur in this region needs further study. Our study proved the effectiveness of the EH4 audio-magnetotelluric method in detecting gigantic paleo-landslide. |
| first_indexed | 2024-04-10T06:59:37Z |
| format | Article |
| id | doaj.art-8f8e7cb929e14c4993a5bf9eb337e958 |
| institution | Directory Open Access Journal |
| issn | 1006-6616 |
| language | zho |
| last_indexed | 2024-04-10T06:59:37Z |
| publishDate | 2021-04-01 |
| publisher | Institute of Geomechanics, Chinese Academy of Geological Sciences |
| record_format | Article |
| series | Dizhi lixue xuebao |
| spelling | doaj.art-8f8e7cb929e14c4993a5bf9eb337e9582023-02-28T01:32:35ZzhoInstitute of Geomechanics, Chinese Academy of Geological SciencesDizhi lixue xuebao1006-66162021-04-0127231732510.12090/j.issn.1006-6616.2021.27.02.029Using EH4 audio-magnetotelluric sounder to detect the gigantic Qiaojia paleo-landslide and its structural characteristicsLI ZhongWU Zhonghai0WANG JinmingZHANG XiaobingFENG Zhen1HU Mengmeng2Institute of Geomechanics, Chinese Academy of Geological Sciences, Beijing 100081, ChinaGuiding Center of Geo-hazards Prevention and Mitigation Techniques, Ministry of Natural Resources, Beijing 100081, ChinaInstitute of Geomechanics, Chinese Academy of Geological Sciences, Beijing 100081, ChinaIn this study, we used the EH4 audio-magnetotelluric sounding, combining with the drilling data, to detect and define the spatial electrical properties and structural characteristics of the Qiaojia paleo-landslide. Based on the detection results, the average depth of the main sliding surface is considered to be 250 m and six faults (F1-F6) were identified, among which the Xiaojiang fault zone (F1) is the main active fault. Meanwhile, it is inferred from the sounding results and drill date that the terrace along the Jinsha River fall into four layers from the surface (Qh) to the deep, namely the sandy clay layer, gravel layer, broken limestone layer, and complete limestone bedrock. The broken limestone layer and the complete limestone bedrock are in the bedrock outcrop area from the surface to the deep. The comprehensive analysis shows that the paleo-landslide is temporarily stable at present, but along with large earthquake activity in the north section of Xiaojiang fault zone in the future, whether the paleo-landslide is likely to revive or similar paleo-landslides will reoccur in this region needs further study. Our study proved the effectiveness of the EH4 audio-magnetotelluric method in detecting gigantic paleo-landslide.https://journal.geomech.ac.cn//article/doi/10.12090/j.issn.1006-6616.2021.27.02.029xiaojiang fault zonegigantic paleo-landslideeh4 audio-magnetotelluric methodsliding surfaceqiaojia |
| spellingShingle | LI Zhong WU Zhonghai WANG Jinming ZHANG Xiaobing FENG Zhen HU Mengmeng Using EH4 audio-magnetotelluric sounder to detect the gigantic Qiaojia paleo-landslide and its structural characteristics Dizhi lixue xuebao xiaojiang fault zone gigantic paleo-landslide eh4 audio-magnetotelluric method sliding surface qiaojia |
| title | Using EH4 audio-magnetotelluric sounder to detect the gigantic Qiaojia paleo-landslide and its structural characteristics |
| title_full | Using EH4 audio-magnetotelluric sounder to detect the gigantic Qiaojia paleo-landslide and its structural characteristics |
| title_fullStr | Using EH4 audio-magnetotelluric sounder to detect the gigantic Qiaojia paleo-landslide and its structural characteristics |
| title_full_unstemmed | Using EH4 audio-magnetotelluric sounder to detect the gigantic Qiaojia paleo-landslide and its structural characteristics |
| title_short | Using EH4 audio-magnetotelluric sounder to detect the gigantic Qiaojia paleo-landslide and its structural characteristics |
| title_sort | using eh4 audio magnetotelluric sounder to detect the gigantic qiaojia paleo landslide and its structural characteristics |
| topic | xiaojiang fault zone gigantic paleo-landslide eh4 audio-magnetotelluric method sliding surface qiaojia |
| url | https://journal.geomech.ac.cn//article/doi/10.12090/j.issn.1006-6616.2021.27.02.029 |
| work_keys_str_mv | AT lizhong usingeh4audiomagnetotelluricsoundertodetectthegiganticqiaojiapaleolandslideanditsstructuralcharacteristics AT wuzhonghai usingeh4audiomagnetotelluricsoundertodetectthegiganticqiaojiapaleolandslideanditsstructuralcharacteristics AT wangjinming usingeh4audiomagnetotelluricsoundertodetectthegiganticqiaojiapaleolandslideanditsstructuralcharacteristics AT zhangxiaobing usingeh4audiomagnetotelluricsoundertodetectthegiganticqiaojiapaleolandslideanditsstructuralcharacteristics AT fengzhen usingeh4audiomagnetotelluricsoundertodetectthegiganticqiaojiapaleolandslideanditsstructuralcharacteristics AT humengmeng usingeh4audiomagnetotelluricsoundertodetectthegiganticqiaojiapaleolandslideanditsstructuralcharacteristics |