Future glacial lakes in High Mountain Asia: an inventory and assessment of hazard potential from surrounding slopes
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TLDR
In this article, the authors present the first complete inventory for future glacial lakes in High Mountain Asia by computing the subglacial bedrock for ~100 000 glaciers and estimating overdeepening area, volume and impact hazard for the larger potential lakes.Abstract:
Bedrock overdeepenings exposed by continued glacial retreat can store precipitation and meltwater, potentially leading to the formation of new proglacial lakes. These lakes may pose threats of glacial lake outburst floods (GLOFs) in high mountain areas, particularly if new lakes form in geomorphological setups prone to triggering events such as landslides or moraine collapses. We present the first complete inventory for future glacial lakes in High Mountain Asia by computing the subglacial bedrock for ~100 000 glaciers and estimating overdeepening area, volume and impact hazard for the larger potential lakes. We detect 25 285 overdeepenings larger than 104 m2 with a volume of 99.1 ± 28.6 km3 covering an area of 2683 ± 773.8 km2. For the 2700 overdeepenings larger than 105 m2, we assess the lake predisposition for mass-movement impacts that could trigger a GLOF by estimating the hazard of material detaching from surrounding slopes. Our findings indicate a shift in lake area, volume and GLOF hazard from the southwestern Himalayan region toward the Karakoram. The results of this study can be used for anticipating emerging threats and potentials connected to glacial lakes and as a basis for further studies at suspected GLOF hazard hotspots.read more
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Contrasted evolution of glacial lakes along the Hindu-Kush Himalaya mountain range between 1990 and 2009
TL;DR: In this article, the authors presented a first regional assessment of glacial lake distribution and evolution in the Himalaya (HKH) and selected seven sites between Bhutan and Afghanistan, to capture the climatic variability along the 2000 km long mountain range.
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Progress and challenges in glacial lake outburst flood research (2017–2021): a research community perspective
Adam Emmer,Simon K. Allen,Mark Carey,Holger Frey,Christian Huggel,Oliver Korup,Martin Mergili,Ashim Sattar,Georg Veh,Thomas Chen,Simon E. Cook,-. MarianaCorreas,González,Soumik Das,Alejandro Diaz Moreno,Fabian Drenkhan,Melanie K. Fischer,William Walter,Immerzeel,Eñaut Izagirre,R. C. Joshi,Ioannis Kougkoulos,Riamsara Kuyakanon,Knapp,Dongfeng Li,Ulfat Majeed,Stephanie A. Matti,Holly Moulton,Faezeh M. Nick,Valentine Piroton,Irfan Rashid,Masoom Reza,A. R. D. Figueiredo,Christian,Riveros,Finu Shrestha,Milan Shrestha,Jakob F. Steiner,Noah Walker-Crawford,Laurence Sylvia Joanne,10,Wood,Jacob C. Yde +42 more
TL;DR: A comprehensive overview of GLOF research can be found in this article , where the authors analyze 594 peer-reviewed GLOF studies published between 2017 and 2021 (Web of Science and Scopus databases).
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Glacial Lake Area Changes in High Mountain Asia during 1990–2020 Using Satellite Remote Sensing
TL;DR: Wang et al. as discussed by the authors developed a per-pixel composited method named the "multitemporal mean NDWI composite" to automatically extract the glacial lake area in HMA from 1990 to 2020 using time-series Landsat data.
References
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Journal ArticleDOI
Glacial lakes exacerbate Himalayan glacier mass loss.
TL;DR: The continued expansion of established glacial lakes, and the preconditioning of land-terminating glaciers for new lake development increases the likelihood of enhanced ice mass loss from the region in coming decades; a scenario not currently considered in regional ice mass Loss projections.
Journal ArticleDOI
Estimating the volume of Alpine glacial lakes
Simon J. Cook,Duncan J. Quincey +1 more
TL;DR: In this paper, the authors evaluate the performance of existing empirical relationships to predict lake volume given a measurement of lake surface area obtained from satellite imagery such relationships are based on the notion that lake depth, area and volume scale predictably.
Journal ArticleDOI
Topographic curvature effects in applied avalanche modeling
TL;DR: In this paper, the authors describe the implementation of topographic curvature effects within the RApid Mass MovementS (RAMMS) snow avalanche simulation toolbox, which is used for snow avalanche risk assessment in Switzerland.
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New lakes in deglaciating high-mountain regions – opportunities and risks
Wilfried Haeberli,Michael Buetler,Christian Huggel,Therese Lehmann Friedli,Yvonne Schaub,Anton Schleiss +5 more
TL;DR: In this paper, an inter-and transdisciplinary study was performed for the currently glacierized areas of the Swiss Alps and the results of this study may serve as an example for dealing with the consequences of rapid climate-induced changes in other populated regions with rugged icy mountains.
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Glacial lake inventory of high-mountain Asia in 1990 and 2018 derived from Landsat images
Xin Wang,Xin Wang,Xiaoyu Guo,Chengde Yang,Qionghuan Liu,Junfeng Wei,Yong Zhang,Shiyin Liu,Yanlin Zhang,Zongli Jiang,Zhiguang Tang +10 more
TL;DR: Wang et al. as mentioned in this paper integrated glacier inventory data and 426 Landsat TM/ETM+/OLI images, and adopted manual visual interpretation to extract glacial lake boundaries within a 10-km buffer from glacier terminals using ArcGIS and ENVI software, normalized difference water index maps, and Google Earth images.