中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
Refining lake volume estimation and critical depth identification for enhanced glacial lake outburst flood (GLOF) event anticipation

文献类型:期刊论文

作者Bazai, Nazir Ahmed6,7,8; Carling, Paul A.5; Cui, Peng4,6,7; Hao, Wang4,6,7; Zhang Guotao4; Liu Dingzhu2,3,4; Hassan, Javed1
刊名CRYOSPHERE
出版日期2024-12-17
卷号18期号:12页码:5921-5938
关键词
ISSN号1994-0416
DOI10.5194/tc-18-5921-2024
英文摘要

Climate change leads to changes in glacier mass balance, including steady advancements and surges that reposition the glacier snouts. Glacier advancement can dam proglacial meltwater lakes. Within the Karakoram and surrounding regions, the positive feedback of climate change has resulted in more frequent ice-dammed glacial lake outburst floods (GLOFs), often facilitated by englacial conduits. However, the complex and multi-factor processes of conduit development are difficult to measure. Determining the lake depths that might trigger GLOFs and the numerical model specifications for breaching is challenging. Empirical estimates of lake volumes, along with field-based monitoring of lake levels and depths and the assessment of GLOF hazards, enable warnings and damage mitigation. Using historical data, remote sensing techniques, high-resolution imagery, cross-correlation feature tracking, and field-based data, we identified the processes of lake formation, drainage timing, and triggering depth. We developed empirical approaches to determine lake volume and trigger water pressure leading to a GLOF. A correlation, albeit a weak one, between glacier surge velocity and lake volume reveals that glacier surge may play a crucial role in lake formation and thus controls the size and volume of the lake. Lake volume estimation involves geometric considerations of the lake basin shape. A GLOF becomes likely when the lake's normalized depth (n ') exceeds 0.60, equivalent to a typical water pressure on the dam face of 510 kPa. These field and remotely sensed findings not only offer valuable insights for early warning procedures in the Karakoram but also suggest that similar approaches might be effectively applied to other mountain environments worldwide where GLOFs pose a hazard.

WOS关键词MORAINE-DAMMED LAKES ; BRIEF COMMUNICATION ; HAZARD ASSESSMENT ; KYAGAR GLACIER ; MASS-LOSS ; KARAKORAM-HIMALAYA ; GLOBAL ASSESSMENT ; SURGE DYNAMICS ; AVALANCHE ; BALANCES
资助项目National Natural Science Foundation of China ; Quaid-i-Azam University, and Karakoram International University ; Special Research Assistant Program of the Chinese Academy of Sciences
WOS研究方向Physical Geography ; Geology
语种英语
WOS记录号WOS:001378671900001
出版者COPERNICUS GESELLSCHAFT MBH
资助机构National Natural Science Foundation of China ; Quaid-i-Azam University, and Karakoram International University ; Special Research Assistant Program of the Chinese Academy of Sciences
源URL[http://ir.imde.ac.cn/handle/131551/58620]  
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Carling, Paul A.; Cui, Peng
作者单位1.Tech Univ Denmark, DTU Space, DK-2800 Lyngby, Denmark
2.Minist Emergency Management, Natl Disaster Reduct Ctr China, Beijing, Peoples R China
3.German Res Ctr Geosci GFZ, Earth Surface Proc Modelling, Potsdam, Germany
4.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Beijing, Peoples R China
5.Univ Southampton, Sch Geog & Environm Sci, Southampton SO17 1BJ, Hants, England
6.HEC, Islamabad, Pakistan
7.Chinese Acad Sci, China Pakistan Joint Res Ctr Earth Sci, Islamabad, Pakistan
8.Chinese Acad Sci, Inst Mt Hazards & Environm, Key Lab Mt Hazards & Earth Surface Proc, Chengdu, Peoples R China
推荐引用方式
GB/T 7714
Bazai, Nazir Ahmed,Carling, Paul A.,Cui, Peng,et al. Refining lake volume estimation and critical depth identification for enhanced glacial lake outburst flood (GLOF) event anticipation[J]. CRYOSPHERE,2024,18(12):5921-5938.
APA Bazai, Nazir Ahmed.,Carling, Paul A..,Cui, Peng.,Hao, Wang.,Zhang Guotao.,...&Hassan, Javed.(2024).Refining lake volume estimation and critical depth identification for enhanced glacial lake outburst flood (GLOF) event anticipation.CRYOSPHERE,18(12),5921-5938.
MLA Bazai, Nazir Ahmed,et al."Refining lake volume estimation and critical depth identification for enhanced glacial lake outburst flood (GLOF) event anticipation".CRYOSPHERE 18.12(2024):5921-5938.

入库方式: OAI收割

来源:成都山地灾害与环境研究所

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