气候变化领域集成服务门户(CCPortal): Process, mechanisms, and early warning of glacier collapse-induced river blocking disasters in the Yarlung Tsangpo Grand Canyon, southeastern Tibetan Plateau

CCPortal

DOI	10.1016/j.scitotenv.2021.151652
	Process, mechanisms, and early warning of glacier collapse-induced river blocking disasters in the Yarlung Tsangpo Grand Canyon, southeastern Tibetan Plateau
	An, Baosheng; Wang, Weicai; Yang, Wei; Wu, Guangjian; Guo, Yanhong; Zhu, Haifeng; Gao, Yang; Bai, Ling; Zhang, Fan; Zeng, Chen; Wang, Lei; Zhou, Jing; Li, Xin; Li, Jia; Zhao, Zhijun; Chen, Yingying; Liu, Jingshi; Li, Jiule; Wang, Zhongyan; Chen, Wenfeng; Yao, Tandong
通讯作者	An, BS ; Wang, WC ; Yang, W (通讯作者)
发表日期	2022
ISSN	0048-9697
EISSN	1879-1026
卷号	816
英文摘要	Glacier collapse is a fairly new type of glacier-related disasters on the Asian Water Towers (AWTs) in the warming climate. On 16 October and 29 October 2018, two glacier collapses occurred in the Sedongpu Basin, 7 km downstream from Gyala Village, Paizhen Town, Miling County, on the Yarlung Tsangpo River (YTR). The ice and entrained debris flows caused by the glacier collapses blocked the YTR, resulting in a potential threat to residents and transport lines upstream and downstream. Through post-event field investigations with a helicopter and an unmanned aerial vehicle (UAV), remote sensing interpretation, and seismic, hydrological, and meteorological observations, the process and potential mechanisms of the glacier collapse-induced river blocking (GCRB) disasters were investigated. We confirmed that the first glacier collapse event occurred at 22:48 (Beijing time) on 16 October 2018 and the second began at 08:03 on 29 October 2018. Approximately 130 x 10(6) m(3) of ice and debris detached from the glacier during the glacier collapse, and we calculated that the river blocking fans caused by the first and second glacier collapse event covered similar to 1.36 km(2) and similar to 1.29 km(2) on the main watercourse of the YTR, respectively. We determined that the GCRB incidents represent a disaster chain of glacier collapse -> glacial debris flow -> river blockage -> dammed lake -> outburst flood. These incidents arise due to a combination of factors, including glacier activity, climate warming, heavy precipitation, pre-seismic activity, and high topographic relief. In the context of climate warming on the Tibetan Plateau, such glacier collapse induced disaster chains will continue or even intensify in the future. To protect against glacier collapse disasters in the Grand Canyon on the YTR, we established a monitoring and early warning system (EWS), which has already successfully sounded alerts for GCRB incidents. As a major element of an integrated risk management strategy, the EWS represents a viable and promising tool for mitigating climate change-related risks. (C) 2021 Published by Elsevier B.V.
关键词	DAMMED LAKES MASS-BALANCE WATER EARTHQUAKE INSTABILITIES LANDSLIDES TRACKING CAUCASUS FLOW
英文关键词	Glacier collapse; River blockage; Yarlung Tsangpo Grand Canyon; Sedongpu Basin; Early warning system
语种	英语
WOS研究方向	Environmental Sciences & Ecology
WOS类目	Environmental Sciences
WOS记录号	WOS:000766809100013
来源期刊	SCIENCE OF THE TOTAL ENVIRONMENT
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/260717
推荐引用方式 GB/T 7714	An, Baosheng,Wang, Weicai,Yang, Wei,et al. Process, mechanisms, and early warning of glacier collapse-induced river blocking disasters in the Yarlung Tsangpo Grand Canyon, southeastern Tibetan Plateau[J]. 中国科学院青藏高原研究所,2022,816.
APA	An, Baosheng.,Wang, Weicai.,Yang, Wei.,Wu, Guangjian.,Guo, Yanhong.,...&Yao, Tandong.(2022).Process, mechanisms, and early warning of glacier collapse-induced river blocking disasters in the Yarlung Tsangpo Grand Canyon, southeastern Tibetan Plateau.SCIENCE OF THE TOTAL ENVIRONMENT,816.
MLA	An, Baosheng,et al."Process, mechanisms, and early warning of glacier collapse-induced river blocking disasters in the Yarlung Tsangpo Grand Canyon, southeastern Tibetan Plateau".SCIENCE OF THE TOTAL ENVIRONMENT 816(2022).