气候变化领域集成服务门户(CCPortal): A generic framework for glacial lake outburst flood investigation: A case study of Zalai Tsho, Southeast Tibet

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DOI	10.1016/j.catena.2023.107614
	A generic framework for glacial lake outburst flood investigation: A case study of Zalai Tsho, Southeast Tibet
	Wang, Wen; Nie, Yong; Zhang, Huayu; Wang, Jida; Deng, Qian; Liu, Lijun; Liu, Fei; Zhang, Sihui; Lyu, Qiyuan; Zhang, Liqi
发表日期	2024
ISSN	0341-8162
EISSN	1872-6887
卷号	234
英文摘要	Glacial lake outburst floods (GLOFs) are one of the most severe natural disasters, resulting in enormous socioeconomic losses as well as threatening downstream settlements and infrastructure in the alpine region. Understanding historical GLOFs benefits disaster reduction and landscape conservation, but many GLOF events remain unreported or lack critical attributes. In this study, a novel framework was proposed to detect historical GLOFs and populate related attributes using a combination of Landsat, Sentinel-2 and Planet optical images, Sentinel-1 Synthetic Aperture Radar (SAR) images, field surveys, and documentation. The framework was implemented successfully on the case of Zalai Tsho, which revealed a previously unknown GLOF with critical attributes including the associated lake evolution, the flood process, and the impacts. The Zalai Tsho GLOF event in Bomi County, Southeast Tibet, occurred on July 7, 2018. Zalai Tsho emerged in 1994, and its surface area increased by 178% between 1994 and 2018, followed by a complete disappearance after the dam failure. A total water volume of 2.7 +/- 0.2 x 105 m3 was released from Zalai Tsho to generate a peak discharge of 558.4 m3/s estimated by hydrological models, which destroyed a bridge, 23.2 ha of woodland, and 1.7 ha of farmland. The Zalai Tsho GLOF was initiated by intense melting waters, superimposed on water from an upstream supraglacial lake, eventually resulted in serious socio-economic losses and long-term environmental effects. Post-GLOF conservation projects play a positive role in protecting residents against flooding, while soil erosion has been exacerbated in certain areas without artificial countermeasures. This study provided an up-to-date, prototype framework for the identification of historical GLOF events to enrich the GLOF dataset and contributed to the risk assessment of GLOF and landscape conservation.
关键词	Glacial lake outburst floods Satellite remote sensing observation Long-term environmental impact Geomorphological change Hydrodynamic model
英文关键词	TERMINATING GLACIERS; SURFACE VELOCITIES; MASS-LOSS; INVENTORY; LANDSAT; HIMALAYAS; EVOLUTION; IMPACTS; HAZARD; BASIN
WOS研究方向	Geosciences, Multidisciplinary ; Soil Science ; Water Resources
WOS记录号	WOS:001106162100001
来源期刊	CATENA
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/283031
作者单位	Chinese Academy of Sciences; Institute of Mountain Hazards & Environment, CAS; University of Illinois System; University of Illinois Urbana-Champaign; Kansas State University; Hohai University; Chinese Academy of Sciences; University of Chinese Academy of Sciences, CAS; Sichuan Normal University
推荐引用方式 GB/T 7714	Wang, Wen,Nie, Yong,Zhang, Huayu,et al. A generic framework for glacial lake outburst flood investigation: A case study of Zalai Tsho, Southeast Tibet[J],2024,234.
APA	Wang, Wen.,Nie, Yong.,Zhang, Huayu.,Wang, Jida.,Deng, Qian.,...&Zhang, Liqi.(2024).A generic framework for glacial lake outburst flood investigation: A case study of Zalai Tsho, Southeast Tibet.CATENA,234.
MLA	Wang, Wen,et al."A generic framework for glacial lake outburst flood investigation: A case study of Zalai Tsho, Southeast Tibet".CATENA 234(2024).