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DOI	10.5194/tc-12-3891-2018
	Glacial and geomorphic effects of a supraglacial lake drainage and outburst event, Everest region, Nepal Himalaya
	Miles E.S.; Scott Watson C.; Brun F.; Berthier E.; Esteves M.; Quincey D.J.; Miles K.E.; Hubbard B.; Wagnon P.
发表日期	2018
ISSN	19940416
卷号	12 期号:12
英文摘要	A set of supraglacial ponds filled rapidly between April and July 2017 on Changri Shar Glacier in the Everest region of Nepal, coalescing into a ∼ 180 000m 2 lake before sudden and complete drainage through Changri Shar and Khumbu glaciers (15-17 July).We use PlanetScope and Pleiádes satellite orthoimagery to document the system's evolution over its very short filling period and to assess the glacial and proglacial effects of the outburst flood.We also use highresolution stereo digital elevation models (DEMs) to complete a detailed analysis of the event's glacial and geomorphic effects. Finally, we use discharge records at a stream gauge 4 km downstream to refine our interpretation of the chronology and magnitude of the outburst. We infer largely subsurface drainage through both of the glaciers located on its flow path, and efficient drainage through the lower portion of Khumbu Glacier. The drainage and subsequent outburst of 1.36±0.19×10 6 m 3 of impounded water had a clear geomorphic impact on glacial and proglacial topography, including deep incision and landsliding along the Changri Nup proglacial stream, the collapse of shallow englacial conduits near the Khumbu terminus and extensive, enhanced bank erosion at least as far as 11 km downstream below Khumbu Glacier. These sudden changes destroyed major trails in three locations, demonstrating the potential hazard that short-lived, relatively small glacial lakes pose. © 2018 Author(s).
学科领域	bank erosion; digital elevation model; discharge; drainage; glacial lake; outburst; Pleiades; stereo image; Himalayas; Khumbu Glacier; Khumbu Himal; Mount Everest; Nepal; Nepal; Sagarmatha [(ADS) Nepal]
语种	英语
scopus关键词	bank erosion; digital elevation model; discharge; drainage; glacial lake; outburst; Pleiades; stereo image; Himalayas; Khumbu Glacier; Khumbu Himal; Mount Everest; Nepal; Nepal; Sagarmatha [(ADS) Nepal]
来源期刊	Cryosphere
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/119013
作者单位	School of Geography, University of Leeds, Leeds, LS29JT, United Kingdom; Swiss Federal Research Institute WSL, Birmensdorf, 8903, Switzerland; Department of Hydrology and Atmospheric Sciences, University of Arizona, Tucson, AZ 85721, United States; LEGOS, Université de Toulouse, CNES, Toulouse, 31400, France; Univ. Grenoble Alpes, CNRS, IRD, Grenoble, 38000, France; Department of Geography and Earth Sciences, Aberystwyth University, Aberystwyth, SY233DB, United Kingdom
推荐引用方式 GB/T 7714	Miles E.S.,Scott Watson C.,Brun F.,et al. Glacial and geomorphic effects of a supraglacial lake drainage and outburst event, Everest region, Nepal Himalaya[J],2018,12(12).
APA	Miles E.S..,Scott Watson C..,Brun F..,Berthier E..,Esteves M..,...&Wagnon P..(2018).Glacial and geomorphic effects of a supraglacial lake drainage and outburst event, Everest region, Nepal Himalaya.Cryosphere,12(12).
MLA	Miles E.S.,et al."Glacial and geomorphic effects of a supraglacial lake drainage and outburst event, Everest region, Nepal Himalaya".Cryosphere 12.12(2018).