Intermittent viscous debris flow formation in Jiangjia Gully from the perspectives of hydrological processes and material supply

doi:10.1016/j.jhydrol.2020.125184

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

	Intermittent viscous debris flow formation in Jiangjia Gully from the perspectives of hydrological processes and material supply
	Guo Xiaojun 1,2; Li Yong 1; Cui Peng 1,2; Yan Hua 1,3; Zhuang Jianqi 4
刊名	JOURNAL OF HYDROLOGY
	2020
卷号	589 页码:125184
关键词	Debris flow Formation process Slope failure Rainfall condition Jiangjia Gully
ISSN号	0022-1694
DOI	10.1016/j.jhydrol.2020.125184
产权排序	1
文献子类	Article
英文摘要	Debris flows are among the most destructive natural processes to affect areas of mountainous terrain. Debris flow formation involves watershed-scale processes of hydrology and material supply. This study explored both processes based on long-term monitoring data from the Jiangjia Gully in southwestern China. Based on hydrological simulations, we found that the debris flows formed as normal or abnormal hydrological processes. The former, with normal time lag tau and normal peak discharge Q(max) formed as a typical hydrological process in which slope failure material was mixed instantaneously with channel runoff. Conversely, the latter, with longer time lag tau and/or abnormal discharge Q(max), formed through blockage and outburst associated with landslides. We found that the different types of debris flow required similar rainfall conditions and that the threshold could be expressed as I = 6.25 D-0.73 (0.5 <= D <= 14.5 h). Furthermore, we established that rainfall pattern influences debris flow occurrence, that is, such events are more likely during short-duration rainfall. The findings of this study highlight the significance of soil supply to the process of debris flow formation via random disturbance of the normal hydrological process.
电子版国际标准刊号	1879-2707
语种	英语
WOS记录号	WOS:000568830400049
内容类型	期刊论文
源URL	[http://ir.imde.ac.cn/handle/131551/46282]
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.Key Laboratory of Mountain Hazards and Surface Process/Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu 610041, China; 2.CAS Center for Excellence in Tibetan Plateau Earth Sciences, Beijing 100101, China; 3.University of Chinese Academy of Science, Beijing 100039, China; 4.School of Geological Engineering and Surveying, Changan University, Xi’an 710064, China
推荐引用方式 GB/T 7714	Guo Xiaojun,Li Yong,Cui Peng,et al. Intermittent viscous debris flow formation in Jiangjia Gully from the perspectives of hydrological processes and material supply[J]. JOURNAL OF HYDROLOGY,2020,589:125184.
APA	Guo Xiaojun,Li Yong,Cui Peng,Yan Hua,&Zhuang Jianqi.(2020).Intermittent viscous debris flow formation in Jiangjia Gully from the perspectives of hydrological processes and material supply.JOURNAL OF HYDROLOGY,589,125184.
MLA	Guo Xiaojun,et al."Intermittent viscous debris flow formation in Jiangjia Gully from the perspectives of hydrological processes and material supply".JOURNAL OF HYDROLOGY 589(2020):125184.