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 Ahmed4,5; Carling, Paul A.3; Cui, Peng2,4; Hao, Wang2,4; Zhang Guotao2; Liu Dingzhu1,2,7; Hassan, Javed6 |
| 刊名 | CRYOSPHERE
 |
| 出版日期 | 2024-12-17 |
| 卷号 | 18期号:12页码:5921-5938 |
| DOI | 10.5194/tc-18-5921-2024 |
| 产权排序 | 5 |
| 文献子类 | Article |
| 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 |
| WOS研究方向 | Physical Geography ; Geology |
| WOS记录号 | WOS:001378671900001 |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/210422]  |
| 专题 | 陆地表层格局与模拟院重点实验室_外文论文 |
| 通讯作者 | Cui, Peng |
| 作者单位 | 1.Minist Emergency Management, Natl Disaster Reduct Ctr China, Beijing, Peoples R China 2.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Beijing, Peoples R China 3.Univ Southampton, Sch Geog & Environm Sci, Southampton SO17 1BJ, Hants, England 4.Chinese Acad Sci, China Pakistan Joint Res Ctr Earth Sci, Islamabad, Pakistan 5.Chinese Acad Sci, Inst Mt Hazards & Environm, Key Lab Mt Hazards & Earth Surface Proc, Chengdu, Peoples R China 6.Tech Univ Denmark, DTU Space, DK-2800 Lyngby, Denmark 7.German Res Ctr Geosci GFZ, Earth Surface Proc Modelling, Potsdam, Germany |
| 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：地理科学与资源研究所
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