Source tectonic dynamics features of Jiuzhaigou M-s 7.0 earthquake in Sichuan Province, China

doi:10.1007/s11629-017-4703-6

CORC > 成都山地灾害与环境研究所 > 中国科学院水利部成都山地灾害与环境研究所 > Journal of Mountain Science > Journal of Mountain Science-2018 > Vol15 No.10

	Source tectonic dynamics features of Jiuzhaigou M-s 7.0 earthquake in Sichuan Province, China
	Yi Shu-jian; Wu Chun-hao; Li Yu-sheng; Huang Chao
刊名	JOURNAL OF MOUNTAIN SCIENCE
	2018
卷号	15 期号:10 页码:2266-2275
关键词	Jiuzhaigou Earthquake Surface rupture Tectonic dynamics Radon activity
ISSN号	1672-6316
DOI	10.1007/s11629-017-4703-6
文献子类	Article
英文摘要	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.
电子版国际标准刊号	1993-0321
语种	英语
WOS记录号	WOS:000447295900014
内容类型	期刊论文
源URL	[http://ir.imde.ac.cn/handle/131551/46331]
专题	Journal of Mountain Science_Journal of Mountain Science-2018_Vol15 No.10
推荐引用方式 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.