气候变化领域集成服务门户(CCPortal): Expansion and hazard risk assessment of glacial lake Jialong Co in the central Himalayas by using an unmanned surface vessel and remote sensing

CCPortal

DOI	10.1016/j.scitotenv.2021.147249
	Expansion and hazard risk assessment of glacial lake Jialong Co in the central Himalayas by using an unmanned surface vessel and remote sensing
	Li, Da; Shangguan, Donghui; Wang, Xinyue; Ding, Yongjian; Su, Pengcheng; Liu, Ruilian; Wang, Meixia
通讯作者	Shangguan, DH (通讯作者)，Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, State Key Lab Cryospher Sci, Lanzhou 730000, Peoples R China.
发表日期	2021
ISSN	0048-9697
EISSN	1879-1026
卷号	784
英文摘要	Glacial lake outburst floods (GLOFs) are a severe hazard in the Himalayas. Glacial lake expansion and the corresponding volume increase play major roles in GLOFs as well as climate change. Furthermore, mass movement and dam conditions play a major role in the GLOF initiation process. Recently, because of global warming, glacial lakes in the central Himalayas have been expanding rapidly. Owing to a lack of systematic assessment and meticulous field surveys, people living downstream are at great risk of GLOFs. Comprehensive investigations and assessment of the relationships among lake expansion, lake dam conditions, and GLOF risk are urgently needed. In this study, we surveyed Jialong Co, a typical end-moraine dammed lake in Poiqu River in the central Himalayas by using Landsat and Sentinel satellite images from the past 32 years, field work, and depth measurements using an unmanned surface vessel on August 28, 2020. The results showed that Jialong Co had experienced slow-quick-slow expansion, increasing in area from 0.13 +/- 0.03 to 0.60 +/- 0.02 km(2). The lake bathymetric map revealed that the lake volume was (3.75 +/- 0.38) x 10(7) m(3) in 2020. Lake expansion occurred in the area from which the mother glacier retreated, indicating a close connection between the lake and its mother glacier and revealing that topography controlled the lake expansion process. Furthermore, thorough field work revealed that outlet dynamics and external water erosion are vulnerable elements in the disaster chain that initiate and affect the GLOF hazard of Jialong Co. Overall, this case study could help scholars understand the expansion mechanism of end-moraine dammed lakes and aid in hazard assessment of glacial lakes in the central Himalayas. (C) 2021 Elsevier B.V. All rights reserved.
关键词	MOUNT EVEREST REGION TIBETAN PLATEAU RAPID EXPANSION INVENTORY EVOLUTION CLIMATE
英文关键词	Glacial lake; GLOFs; USV; Remote sensing; Hazard assessment
语种	英语
WOS研究方向	Environmental Sciences & Ecology
WOS类目	Environmental Sciences
WOS记录号	WOS:000657591100012
来源期刊	SCIENCE OF THE TOTAL ENVIRONMENT
来源机构	中国科学院西北生态环境资源研究院
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/254522
作者单位	[Li, Da; Shangguan, Donghui; Wang, Xinyue; Ding, Yongjian; Liu, Ruilian; Wang, Meixia] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, State Key Lab Cryospher Sci, Lanzhou 730000, Peoples R China; [Li, Da; Shangguan, Donghui; Wang, Xinyue; Ding, Yongjian; Liu, Ruilian; Wang, Meixia] Univ Chinese Acad Sci, Beijing 100049, Peoples R China; [Shangguan, Donghui; Ding, Yongjian] China Pakistan Joint Res Ctr Earth Sci, CAS HEC, Islamabad 45320, Pakistan; [Su, Pengcheng] Chinese Acad Sci, Inst Mt Hazards & Environm, Key Lab Mt Hazards & Earth Surface Proc, Chengdu 610041, Peoples R China
推荐引用方式 GB/T 7714	Li, Da,Shangguan, Donghui,Wang, Xinyue,et al. Expansion and hazard risk assessment of glacial lake Jialong Co in the central Himalayas by using an unmanned surface vessel and remote sensing[J]. 中国科学院西北生态环境资源研究院,2021,784.
APA	Li, Da.,Shangguan, Donghui.,Wang, Xinyue.,Ding, Yongjian.,Su, Pengcheng.,...&Wang, Meixia.(2021).Expansion and hazard risk assessment of glacial lake Jialong Co in the central Himalayas by using an unmanned surface vessel and remote sensing.SCIENCE OF THE TOTAL ENVIRONMENT,784.
MLA	Li, Da,et al."Expansion and hazard risk assessment of glacial lake Jialong Co in the central Himalayas by using an unmanned surface vessel and remote sensing".SCIENCE OF THE TOTAL ENVIRONMENT 784(2021).