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Heterogeneous glacial lake changes and links of lake expansions to the rapid thinning of adjacent glacier termini in the Himalayas
Song, Chunqiao1; Sheng, Yongwei1; Wang, Jida2; Ke, Linghong3; Madson, Austin1; Nie, Yong4
Corresponding AuthorChunqiao Song
2017-03-01
Source PublicationGEOMORPHOLOGY
ISSN0169-555X
Volume280Pages:30-38
SubtypeArticle
Abstract

Glacier mass loss in the Himalayas has far-reaching implications for the alteration of regional hydrologic regimes, an increased risk of glacial lake outburst, downstream water resource abundance, and contributions to sea level rise. However, the mass losses of Himalayan glaciers are not well understood towing to the scarcity of observations and the heterogeneous responses of Himalayan glaciers to climate change and local factors (e.g., glacier surge, interacting with proglacial lakes). In particular, there is a lack of understanding on the unique interactions between moraine-dammed glacial lakes and their effects on debris cover on valley glacier termini. In this study, we examined the temporal evolution of 151 large glacial lakes across the Himalayas and then classified these glacial lakes into three categories: proglacial lakes in contact with full or partial debris-covered glaciers (debris-contact lakes), ice cliff-contact lakes, and non-glacier-contact lakes. The results show that debris-contact lakes experienced a dramatic areal increase of 36.5% over the years 2000 to 2014, while the latter two categories of lakes remained generally stable. The majority of lake expansions occurred at the glacier front without marked lake level rises. This suggests that the rapid expansion of these debris-contact lakes can be largely attributed to the thinning of debris-covered ice as caused by the melting of glacial fronts and the subsequent glacial retreat. We reconstructed the height variations of glacier fronts in contact with 57 different proglacial lakes during the years 2000 to 2014. These reconstructed surface elevation changes of debris-covered, lake-contact glacier fronts reveal significant thinning trends with considerable lowering rates that range from 1.0 to 9.7 m/y. Our study reveals that a substantial average ice thinning of 3.9 m/y occurred at the glacier fronts that are in contact with glacial lakes. (C) 2016 Elsevier B.V. All rights reserved.

KeywordGlacial Lake Glacier Debris Himalaya Remote Sensing Climate Change
WOS HeadingsScience & Technology ; Physical Sciences
DOI10.1016/j.geomorph.2016.12.002
WOS Subject ExtendedPhysical Geography ; Geology
Indexed BySCI
WOS KeywordNEPAL HIMALAYA ; TIBETAN PLATEAU ; CLIMATE-CHANGE ; MASS BALANCES ; LEVEL CHANGES ; ICE CAPS ; ALTIMETRY ; IMAGERY ; OCEAN ; RIVER
Language英语
Quartile2区
TOP
WOS SubjectGeography, Physical ; Geosciences, Multidisciplinary
WOS IDWOS:000393931400003
Funding OrganizationU.S. Geological Survey (USGS) Landsat Science Team Program(G12PC00071)
Citation statistics
Cited Times:45[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/18508
Collection数字山地与遥感应用中心
Affiliation1.Univ Calif Los Angeles, Dept Geog, Los Angeles, CA 90095 USA
2.Kansas State Univ, Dept Geog, Manhattan, KS 66506 USA
3.Hong Kong Polytech Univ, Dept Land Surveying & Geoinformat, Hong Kong 999077, Hong Kong, Peoples R China
4.Chinese Acad Sci, Inst Mt Hazards & Environm, Chengdu, Peoples R China
Recommended Citation
GB/T 7714
Song, Chunqiao,Sheng, Yongwei,Wang, Jida,et al. Heterogeneous glacial lake changes and links of lake expansions to the rapid thinning of adjacent glacier termini in the Himalayas[J]. GEOMORPHOLOGY,2017,280:30-38.
APA Song, Chunqiao,Sheng, Yongwei,Wang, Jida,Ke, Linghong,Madson, Austin,&Nie, Yong.(2017).Heterogeneous glacial lake changes and links of lake expansions to the rapid thinning of adjacent glacier termini in the Himalayas.GEOMORPHOLOGY,280,30-38.
MLA Song, Chunqiao,et al."Heterogeneous glacial lake changes and links of lake expansions to the rapid thinning of adjacent glacier termini in the Himalayas".GEOMORPHOLOGY 280(2017):30-38.
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