IMHE OpenIR  > 山地灾害与地表过程重点实验室
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
2018-10-01
Source PublicationJOURNAL OF MOUNTAIN SCIENCE
ISSN1672-6316
Volume15Issue:10Pages:2266-2275
AbstractOn 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.
KeywordJiuzhaigou Earthquake Surface rupture Tectonic dynamics Radon activity
DOI10.1007/s11629-017-4703-6
WOS KeywordWENCHUAN EARTHQUAKE ; SURFACE RUPTURES ; SEISMOGENIC STRUCTURE ; MECHANISM ; FAULT
Language英语
Funding ProjectOpen 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 AreaEnvironmental Sciences & Ecology
WOS SubjectEnvironmental Sciences
WOS IDWOS:000447295900014
Funding OrganizationOpen 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)
PublisherSCIENCE PRESS
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Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/24049
Collection山地灾害与地表过程重点实验室
Corresponding AuthorLi Yu-sheng
Affiliation1.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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