| Source tectonic dynamics features of Jiuzhaigou M-s 7.0 earthquake in Sichuan Province, China | |
Yi Shu-jian1,2,3; Wu Chun-hao2,3 ; Li Yu-sheng1; Huang Chao1
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| 2018-10-01 | |
| Source Publication | JOURNAL OF MOUNTAIN SCIENCE
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| ISSN | 1672-6316 |
| Volume | 15Issue:10Pages:2266-2275 |
| Abstract | On August 8, 2017, a M-s 7.0 earthquake occurred 5 km to the west of Jiuzhaigou National Park, causing 25 deaths and injuring 525. The objective of this study was to explore the seismogenic fault of the earthquake and tectonic dynamics of the source rupture. Field investigations, radon activity tests, remote sensing interpretations, and geophysical data analyses were carried out immediately after the earthquake. The Jiuzhaigou earthquake occurred at the intersection of the northern margin of the Minshan uplift belt and the south part of the Wenxian-Maqin fault in the south margin of the West Qinling geosyncline. There are two surface rupture zones trending northwest (NW), which are ground coseismic ruptures caused by concealed earthquake faults. The rupture on the southwest is the structure triggering the earthquake, along the Jiuzhaitiantang-Epicenter-Wuhuahai. The other one on the northeast (Shangsizhai-Zhongcha-Bimang) is a reactivation and extension of the secondary fault trending NW. The source rupture of this earthquake is a strike-slip shear fracture associated with the fault plane trending NW 331 degrees and steeply dipping 75 degrees, which is continuously expanding at both ends. The tectonic dynamics process of the source rupture is that the "Jiuzhaigou protrusion" is left-lateral sheared along the seismogenic fault in the NW direction. Finally, the Maqin fault and the arc fault system at the top of the "Wenxian protrusion" will be gradually broken through sometime in far future, as well as earthquake-triggered landslides will be further occurred along the narrow corridor between the seismogenic faults. The research results revealed the basic geological data and tectonic dynamic mechanism in this earthquake. |
| Keyword | Jiuzhaigou Earthquake Surface rupture Tectonic dynamics Radon activity |
| DOI | 10.1007/s11629-017-4703-6 |
| WOS Keyword | WENCHUAN EARTHQUAKE ; SURFACE RUPTURES ; SEISMOGENIC STRUCTURE ; MECHANISM ; FAULT |
| Language | 英语 |
| Funding Project | Open Research Fund from the Key Laboratory of Mountain Hazards and Earth Surface Process (Chinese Academy of Sciences)[KLMHESP-17-06] ; Independent Research Fund from the State Key Laboratory of Geohazard Prevention and Geoenvironment Protection (Chengdu University of Technology)[40100-00002219] |
| WOS Research Area | Environmental Sciences & Ecology |
| WOS Subject | Environmental Sciences |
| WOS ID | WOS:000447295900014 |
| Funding Organization | Open Research Fund from the Key Laboratory of Mountain Hazards and Earth Surface Process (Chinese Academy of Sciences) ; Independent Research Fund from the State Key Laboratory of Geohazard Prevention and Geoenvironment Protection (Chengdu University of Technology) |
| Publisher | SCIENCE PRESS |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imde.ac.cn/handle/131551/24049 |
| Collection | 山地灾害与地表过程重点实验室 |
| Corresponding Author | Li Yu-sheng |
| Affiliation | 1.Chengdu Univ Technol, State Key Lab Geohazard Prevent & Geoenvironm Pro, Chengdu 610059, Sichuan, Peoples R China 2.Chinese Acad Sci, Inst Mt Hazards & Environm, Key Lab Mt Hazards & Surface Proc, Chengdu 610041, Sichuan, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| First Author Affilication | 中国科学院水利部成都山地灾害与环境研究所 |
| Recommended Citation GB/T 7714 | Yi Shu-jian,Wu Chun-hao,Li Yu-sheng,et al. Source tectonic dynamics features of Jiuzhaigou M-s 7.0 earthquake in Sichuan Province, China[J]. JOURNAL OF MOUNTAIN SCIENCE,2018,15(10):2266-2275. |
| APA | Yi Shu-jian,Wu Chun-hao,Li Yu-sheng,&Huang Chao.(2018).Source tectonic dynamics features of Jiuzhaigou M-s 7.0 earthquake in Sichuan Province, China.JOURNAL OF MOUNTAIN SCIENCE,15(10),2266-2275. |
| MLA | Yi Shu-jian,et al."Source tectonic dynamics features of Jiuzhaigou M-s 7.0 earthquake in Sichuan Province, China".JOURNAL OF MOUNTAIN SCIENCE 15.10(2018):2266-2275. |
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| Source tectonic dyna（6807KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Application Full Text | |
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