Seismogenic fault and topography control on the spatial patterns of landslides triggered by the 2017 Jiuzhaigou earthquake

doi:10.1007/s11629-017-4761-9

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 > 山地灾害与地表过程重点实验室

	Seismogenic fault and topography control on the spatial patterns of landslides triggered by the 2017 Jiuzhaigou earthquake
	Wu, Chun-hao1,2 ; Cui, Peng1,3 ; Li, Yu-sheng 4; Ayala, Irasema Alcantara 5; Huang, Chao 4; Yi, Shu-jian 4
刊名	JOURNAL OF MOUNTAIN SCIENCE
	2018-04-01
卷号	15 期号:4 页码:793-807
关键词	2017 Jiuzhaigou earthquake Landslide Seismogenic fault Topography Spatial pattern
ISSN号	1672-6316
DOI	10.1007/s11629-017-4761-9
英文摘要	Jiuzhaigou National Park, located in northwest plateau of Sichuan Province, is a UNESCO World Heritage Site, and one of the most popular scenic areas in China. On August 8, 2017, a Mw 6.5 earthquake occurred 5 km to the west of a major scenic area, causing 25 deaths and injuring 525, and the Park was seriously affected. The objective of this study was to explore the controls of seismogenic fault and topographic factors on the spatial patterns of these landslides. Immediately after the main shock, field survey, remote-sensing investigations, and statistical and spatial analysis were undertaken. At least 2212 earthquake-triggered landslides were identified, covering a total area of 11.8 km2. These were mainly shallow landslides and rock falls. Results demonstrated that landslides exhibited a close spatial correlation with seismogenic faults. More than 85% of the landslides occurred at 2200 to 3700 m elevations. The largest quantity of landslides was recorded in places with local topographic reliefs ranging from 200 to 500 m. Slopes in the range of similar to 20A degrees-50A degrees are the most susceptible to failure. Landslides occurred mostly on slopes facing east-northeast (ENE), east (E), east-southeast (ESE), and southeast (SE), which were nearly vertical to the orientation of the seismogenic fault slip. The back-slope direction and thin ridge amplification effects were documented. These results provide insights on the control of the spatial pattern of earthquake-triggered landslides modified by the synergetic effect of seismogenic faults and topography.
语种	英语
出版者	SCIENCE PRESS
WOS记录号	WOS:000429949900010
内容类型	期刊论文
源URL	[http://ir.imde.ac.cn/handle/131551/21447]
专题	成都山地灾害与环境研究所_山地灾害与地表过程重点实验室
通讯作者	Cui, Peng
作者单位	1.Chinese Acad Sci, Inst Mt Hazards & Environm, Key Lab Mt Surface Proc & Hazards, Chengdu 610041, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Chinese Acad Sci, Ctr Excellence Tibetan Plateau Earth Sci, Beijing 100101, Peoples R China 4.Chengdu Univ Technol, State Key Lab Geohazard Prevent & Geoenvironm Pro, Chengdu 610059, Sichuan, Peoples R China 5.Univ Nacl Autonoma Mexico, Inst Geog, Circuito Exterior S-N,Ciudad Univ, Mexico City 04510, DF, Mexico
推荐引用方式 GB/T 7714	Wu, Chun-hao,Cui, Peng,Li, Yu-sheng,et al. Seismogenic fault and topography control on the spatial patterns of landslides triggered by the 2017 Jiuzhaigou earthquake[J]. JOURNAL OF MOUNTAIN SCIENCE,2018,15(4):793-807.
APA	Wu, Chun-hao,Cui, Peng,Li, Yu-sheng,Ayala, Irasema Alcantara,Huang, Chao,&Yi, Shu-jian.(2018).Seismogenic fault and topography control on the spatial patterns of landslides triggered by the 2017 Jiuzhaigou earthquake.JOURNAL OF MOUNTAIN SCIENCE,15(4),793-807.
MLA	Wu, Chun-hao,et al."Seismogenic fault and topography control on the spatial patterns of landslides triggered by the 2017 Jiuzhaigou earthquake".JOURNAL OF MOUNTAIN SCIENCE 15.4(2018):793-807.