Variation of debris flow/flood formation conditions at the watershed scale in the Wenchuan Earthquake area

doi:10.1007/s10346-021-01644-2

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

	Variation of debris flow/flood formation conditions at the watershed scale in the Wenchuan Earthquake area
	Guo, Xiaojun 2,3; Li, Yong 3; Chen, Xingchang 1; Zhang, Ju 1; Sun, Yuqing 1
刊名	LANDSLIDES
	2021-03-03
卷号	18 期号:7 页码:2427-2443
关键词	Debris flow flood formation Runoff condition Rainfall threshold Revegetation Wenchuan Earthquake
ISSN号	1612-510X
DOI	10.1007/s10346-021-01644-2
英文摘要	A channelized debris flow/flood generally originates from initial gully erosion by superficial runoff that evolves rapidly into massive erosion of the channel bed. Knowledge of the formation conditions of such events is crucial for accurate forecasting, and determination of rainfall and runoff thresholds for such hazards is a primary concern following a strong earthquake. This work proposed a framework for debris flow/flood formation at the watershed scale in two watersheds (area: 2.4 and 32.4 km(2)) in the Wenchuan Earthquake area (China). The critical runoff and rainfall conditions required for debris flow/flood formation were simulated and their annual variations investigated. Ultimately, the runoff conditions required for debris flow/flood formation in the two studied watersheds were calculated on an annual basis and found to increase in time. Similarly, following consideration of three different rainfall types, critical rainfall conditions were proposed that also showed an increasing tendency. The increase of rainfall and runoff conditions for debris flow/flood formation is attributable to both the recovery of vegetation and the reduction of source materials. In comparison with actual monitored flow behaviors and previously proposed rainfall thresholds, the results showed strong consistency and high forecasting efficiency.
资助项目	Strategic Priority Research Program of CAS[XDA20030301] ; Strategic Priority Research Program of CAS[XDA23090202] ; National Research and Development Program[2017YFC1502504] ; NSFC[41977257] ; Western Light of Young Scholars, CAS
WOS研究方向	Engineering ; Geology
语种	英语
出版者	SPRINGER HEIDELBERG
WOS记录号	WOS:000625058300001
资助机构	Strategic Priority Research Program of CAS ; National Research and Development Program ; NSFC ; Western Light of Young Scholars, CAS
内容类型	期刊论文
源URL	[http://ir.imde.ac.cn/handle/131551/56075]
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	Guo, Xiaojun
作者单位	1.Southwest Univ Sci & Technol, Sch Environm & Resource, Mianyang 621020, Sichuan, Peoples R China 2.CAS Ctr Excellence Tibetan Plateau Earth Sci, Beijing 100101, Peoples R China 3.Chinese Acad Sci, Inst Mt Hazards & Environm, Key Lab Mt Hazards & Surface Proc, Chengdu 610041, Peoples R China
推荐引用方式 GB/T 7714	Guo, Xiaojun,Li, Yong,Chen, Xingchang,et al. Variation of debris flow/flood formation conditions at the watershed scale in the Wenchuan Earthquake area[J]. LANDSLIDES,2021,18(7):2427-2443.
APA	Guo, Xiaojun,Li, Yong,Chen, Xingchang,Zhang, Ju,&Sun, Yuqing.(2021).Variation of debris flow/flood formation conditions at the watershed scale in the Wenchuan Earthquake area.LANDSLIDES,18(7),2427-2443.
MLA	Guo, Xiaojun,et al."Variation of debris flow/flood formation conditions at the watershed scale in the Wenchuan Earthquake area".LANDSLIDES 18.7(2021):2427-2443.