Assessment of debris-flow potential dangers in the Jiuzhaigou Valley following the August 8, 2017, Jiuzhaigou earthquake, western China

doi:10.1016/j.enggeo.2019.05.004

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

	Assessment of debris-flow potential dangers in the Jiuzhaigou Valley following the August 8, 2017, Jiuzhaigou earthquake, western China
	Hu, Xudong 1,2,3; Hu, Kaiheng1,2 ; Tang, Jinbo1,2 ; You, Yong1,2 ; Wu, Chaohua 1,2,3
刊名	ENGINEERING GEOLOGY
	2019-06-05
卷号	256 页码:57-66
关键词	Jiuzhaigou earthquake Debris flow Sediment augmentation Potential danger assessment
ISSN号	0013-7952
DOI	10.1016/j.enggeo.2019.05.004
通讯作者	Hu, Kaiheng(khhu@imde.ac.cn)
英文摘要	On August 8, 2017, an M-s 7.0 earthquake occurred at the Jiuzhaigou World Natural and Cultural Heritage, Sichuan Province, southwestern China. Eighty-three earthquake-induced landslides that directly damaged the Jiuzhaigou heritage sites were identified via remote-sensing interpretation and field survey. The coseismic landslides were concentrated primarily within 3 km of the seismogenic fault. Large volumes of sediments were transported into catchments of the Jiuzhaigou Valley, creating a geo-environment conducive to debris flow hazards triggered by post-earthquake heavy rainfall. A methodology combining the calculation of sediment augmentation, particle model, and numerical algorithm is developed to assess the potential dangers of post-quake debris flows. Five typical catchments strongly affected by the earthquake are chosen as study cases. The simulation results at Xiajijiehai Gully show a good agreement with the actual inundation area of the debris-flow event on September 25, 2017. The comparison of pre- and post-earthquake scenarios shows that an increase in sediment supply can greatly increase the debris-flow potential dangers characterized by higher maximum flow depths and larger inundation areas.
资助项目	National Key R&D Program of China[2018YFC1505205] ; National Basic Research Program of China (973 Program)[2015CB452704] ; National Natural Science Foundation of China[41601011]
WOS关键词	2008 WENCHUAN EARTHQUAKE ; INDUCED LANDSLIDES ; HAZARD ASSESSMENT ; IMPACT ; SIMULATION ; PREDICTION ; DISTANCES ; MODEL ; TIME ; AREA
WOS研究方向	Engineering ; Geology
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000472690300004
资助机构	National Key R&D Program of China ; National Basic Research Program of China (973 Program) ; National Natural Science Foundation of China
内容类型	期刊论文
源URL	[http://ir.imde.ac.cn/handle/131551/26503]
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	Hu, Kaiheng
作者单位	1.Chinese Acad Sci, Key Lab Mt Hazards & Earth Surface Proc, Chengdu 610041, Sichuan, Peoples R China 2.Chinese Acad Sci, Inst Mt Hazards & Environm, Chengdu 610041, Sichuan, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Hu, Xudong,Hu, Kaiheng,Tang, Jinbo,et al. Assessment of debris-flow potential dangers in the Jiuzhaigou Valley following the August 8, 2017, Jiuzhaigou earthquake, western China[J]. ENGINEERING GEOLOGY,2019,256:57-66.
APA	Hu, Xudong,Hu, Kaiheng,Tang, Jinbo,You, Yong,&Wu, Chaohua.(2019).Assessment of debris-flow potential dangers in the Jiuzhaigou Valley following the August 8, 2017, Jiuzhaigou earthquake, western China.ENGINEERING GEOLOGY,256,57-66.
MLA	Hu, Xudong,et al."Assessment of debris-flow potential dangers in the Jiuzhaigou Valley following the August 8, 2017, Jiuzhaigou earthquake, western China".ENGINEERING GEOLOGY 256(2019):57-66.