Glacier Change, Supraglacial Debris Expansion and Glacial Lake Evolution in the Gyirong River Basin, Central Himalayas, between 1988 and 2015
Jiang, Sheng1,2; Nie, Yong2,3; Liu, Qiao2,3,4; Wang, Jida5; Liu, Linshan6; Hassan, Javed7; Liu, Xiangyang1; Xu, Xia1
刊名REMOTE SENSING
2018-07-01
卷号10期号:7页码:18
关键词Debris Cover Glofs Remote Sensing Climate Change The Himalayas Gyirong Pass
ISSN号2072-4292
DOI10.3390/rs10070986
英文摘要

Himalayan glacier changes in the context of global climate change have attracted worldwide attention due to their profound cryo-hydrological ramifications. However, an integrated understanding of the debris-free and debris-covered glacier evolution and its interaction with glacial lake is still lacking. Using one case study in the Gyirong River Basin located in the central Himalayas, this paper applied archival Landsat imagery and an automated mapping method to understand how glaciers and glacial lakes interactively evolved between 1988 and 2015. Our analyses identified 467 glaciers in 1988, containing 435 debris-free and 32 debris-covered glaciers, with a total area of 614.09 +/- 36.69 km(2). These glaciers decreased by 16.45% in area from 1988 to 2015, with an accelerated retreat rate after 1994. Debris-free glaciers retreated faster than debris-covered glaciers. As a result of glacial downwasting, supraglacial debris coverage expanded upward by 17.79 km2 (24.44%). Concurrent with glacial retreat, glacial lakes increased in both number (+41) and area (+54.11%). Glacier-connected lakes likely accelerated the glacial retreat via thermal energy transmission and contributed to over 15% of the area loss in their connected glaciers. On the other hand, significant glacial retreats led to disconnections from their proglacial lakes, which appeared to stabilize the lake areas. Continuous expansions in the lakes connected with debris-covered glaciers, therefore, need additional attention due to their potential outbursts. In comparison with precipitation variation, temperature increase was the primary driver of such glacier and glacial lake changes. In addition, debris coverage, size, altitude, and connectivity with glacial lakes also affected the degree of glacial changes and resulted in the spatial heterogeneity of glacial wastage across the Gyirong River Basin.

语种英语
出版者MDPI
WOS记录号WOS:000440332500009
内容类型期刊论文
源URL[http://ir.imde.ac.cn/handle/131551/23484]  
专题成都山地灾害与环境研究所_数字山地与遥感应用中心
成都山地灾害与环境研究所_山地表生过程与生态调控重点实验室
通讯作者Nie, Yong
作者单位1.Sichuan Normal Univ, Fac Geog & Resource Sci, Chengdu 610101, Sichuan, Peoples R China
2.Chinese Acad Sci, Inst Mt Hazards & Environm, Chengdu 610041, Sichuan, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
4.SinoNepal Joint Res Ctr Geog, Chengdu 610041, Sichuan, Peoples R China
5.Kansas State Univ, Dept Geog, Manhattan, KS 66506 USA
6.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Land Surface Pattern & Simulat, Beijing 100101, Peoples R China
7.Karakoram Int Univ, Dept Earth Sci, Gilgit Baltistan 15100, Pakistan
推荐引用方式
GB/T 7714
Jiang, Sheng,Nie, Yong,Liu, Qiao,et al. Glacier Change, Supraglacial Debris Expansion and Glacial Lake Evolution in the Gyirong River Basin, Central Himalayas, between 1988 and 2015[J]. REMOTE SENSING,2018,10(7):18.
APA Jiang, Sheng.,Nie, Yong.,Liu, Qiao.,Wang, Jida.,Liu, Linshan.,...&Xu, Xia.(2018).Glacier Change, Supraglacial Debris Expansion and Glacial Lake Evolution in the Gyirong River Basin, Central Himalayas, between 1988 and 2015.REMOTE SENSING,10(7),18.
MLA Jiang, Sheng,et al."Glacier Change, Supraglacial Debris Expansion and Glacial Lake Evolution in the Gyirong River Basin, Central Himalayas, between 1988 and 2015".REMOTE SENSING 10.7(2018):18.
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