Morpho-sedimentary and stratigraphic characteristics of the 2000 Yigong River landslide dam outburst flood deposits, eastern Tibetan Plateau

doi:10.1016/j.geomorph.2020.107293

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

	Morpho-sedimentary and stratigraphic characteristics of the 2000 Yigong River landslide dam outburst flood deposits, eastern Tibetan Plateau
	Wu Chaohua 1,2,3; Hu Kaiheng 1,2; Liu Weiming 1,2; Wang Hao 1,3,4; Hu Xudong 5; Zhang Xiaopeng 1,2,3
刊名	GEOMORPHOLOGY
	2020
卷号	367 页码:107293
关键词	Yigong River Eastern Tibet Landslide dammed lake Outburst flood Sedimentology
ISSN号	0169-555X
DOI	10.1016/j.geomorph.2020.107293
通讯作者	Hu, Kaiheng(khhu@imde.ac.cn)
产权排序	1
文献子类	Article
英文摘要	Sedimentary characteristics of landslide dam outburst flood deposits are distinct from those of rainfall flood deposits due to their very high hydraulic energy and sediment concentration. While they have been studied well in geological record, investigations of modern outburst flood deposits are relatively rare. Well-preserved flood deposits and landforms caused by the June 2000 landslide dam outburst flood in the Yigong River, eastern Tibet provide an opportunity to evaluate such sedimentological response to a high energy modern event. The sedimentary characteristics of boulder bars and channel evolution over c. 17 km downstream of the breach were investigated by field survey and remote sensing interpretation. The results show that the post-flood channel migrated downstream and increased in curvature. The bar shape is very little changed toward downstream, but the bar area shows a fluctuating decrease. Poorly sorted accumulations composed of massive granular gravels and boulders near the breach indicate sediment-rich bedload depositing processes occurred during rapid rising stage flows. In contrast, there are eddy bars and deposition of fine gravel with horizontally bedded laminations 17 km downstream of the dam, suggesting suspended sediment dominated deposition with a rapid loss of transport capacity. Comparison with previous hydrodynamic simulations indicates that the rates of the rising stage and the falling stage strongly affect the sedimentary characteristics of boulder bars and slackwater deposits. (C) 2020 Elsevier B.V. All rights reserved.
电子版国际标准刊号	1872-695X
资助项目	National Natural Science Foundation of China[41790434] ; National Key Research and Development Program of China[2018YFC1505205]
WOS关键词	NAMCHE-BARWA SYNTAXIS ; HIMALAYAN SYNTAXIS ; TSANGPO GORGE ; LATE PLEISTOCENE ; METAMORPHIC EVOLUTION ; JOKULHLAUP DEPOSITS ; CHANNELED SCABLANDS ; ALTAI MOUNTAINS ; LAKE ; EROSION
WOS研究方向	Physical Geography ; Geology
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:000564548800006
资助机构	National Natural Science Foundation of China ; National Key Research and Development Program of China
内容类型	期刊论文
源URL	[http://ir.imde.ac.cn/handle/131551/35614]
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中国科学院水利部成都山地灾害与环境研究所
通讯作者	Hu Kaiheng
作者单位	1.Key Laboratory of Mountain Hazards and Earth Surface Process, Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu 610041, China;; 2.Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu 610041, China;; 3.University of Chinese Academy of Sciences, Beijing 100149, China;; 4.Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing, China;; 5.College of Civil Engineering & Architecture, China Three Gorges University, Hubei, Yichang 443002, China
推荐引用方式 GB/T 7714	Wu Chaohua,Hu Kaiheng,Liu Weiming,et al. Morpho-sedimentary and stratigraphic characteristics of the 2000 Yigong River landslide dam outburst flood deposits, eastern Tibetan Plateau[J]. GEOMORPHOLOGY,2020,367:107293.
APA	Wu Chaohua,Hu Kaiheng,Liu Weiming,Wang Hao,Hu Xudong,&Zhang Xiaopeng.(2020).Morpho-sedimentary and stratigraphic characteristics of the 2000 Yigong River landslide dam outburst flood deposits, eastern Tibetan Plateau.GEOMORPHOLOGY,367,107293.
MLA	Wu Chaohua,et al."Morpho-sedimentary and stratigraphic characteristics of the 2000 Yigong River landslide dam outburst flood deposits, eastern Tibetan Plateau".GEOMORPHOLOGY 367(2020):107293.