globalchange  > 气候减缓与适应
DOI: 10.1016/j.geomorph.2019.05.009
WOS记录号: WOS:000476965100001
论文题名:
Evolution of a debris-covered glacier in the western Himalaya during the last four decades (1971-2016): A multiparametric assessment using remote sensing and field observations
作者: Shukla, Aparna1; Garg, Purushottam Kumar2,3,4
通讯作者: Shukla, Aparna
刊名: GEOMORPHOLOGY
ISSN: 0169-555X
EISSN: 1872-695X
出版年: 2019
卷: 341, 页码:1-14
语种: 英语
英文关键词: Glacier thinning ; Surface ice velocity ; Multiparametric approach ; Western Himalaya
WOS关键词: CHHOTA-SHIGRI GLACIER ; SUPRAGLACIAL LAKES ; HIMACHAL HIMALAYA ; CLIMATE-CHANGE ; MASS BALANCES ; CHANDRA BASIN ; ICE MELT ; INDIA ; REGION ; KARAKORAM
WOS学科分类: Geography, Physical ; Geosciences, Multidisciplinary
WOS研究方向: Physical Geography ; Geology
英文摘要:

This study assesses the response of the Panchi Nala glacier, Bhaga Basin, western Himalaya to climate change by monitoring multiple glacier parameters namely, length, area, debris cover, snowline altitude (SLA), surface ice velocity (Sly), and surface elevation change (Delta h). These parameters were analysed using high-resolution satellite images (Corona KH-4B and Sentinel-2 MSI) and medium-resolution ones (Landsat TM/ETM+/OLI and Terra ASTER) acquired between 1971 and 2016, along with extensive field observations. Considering only dimensional changes, the glacier appears to have low rates of recession (4.54 +/- 2.56 m y(-1)) and deglaciation (0.11 +/- 0.04% y(-1)) over the study period (1971-2016). However, SIV and Delta h values reveal a significant slowdown (33.87%; 1992/93-2015/16), and an extensive lowering (-1.62 +/- 0.06 m y(-1); 2000-2013) on the glacier. The debris cover area and SIA also increased by 23.50 +/- 1.74% and 287.63 m, respectively, during 1971-2016. Increase in the mean winter minimum temperature, and decrease in the winter snowfall are probably the main drivers of glacier depletion. We conclude that the significant slowdown, extensive surface lowering, development of a proglacial lake and appearance of the supraglacial lakes collectively indicate a severe glacier degeneration. This forewarns that the glacier may experience an accelerated pace of wastage in the future. (C) 2019 Elsevier B.V. All rights reserved.


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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/124684
Appears in Collections:气候减缓与适应

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作者单位: 1.Wadia Inst Himalayan Geol, 33 GMS Rd, Dehra Dun 248001, India
2.Wadia Inst Himalayan Geol, Ctr Glaciol, 33 GMS Rd, Dehra Dun 248001, India
3.Univ Jammu, Postgrad Dept Remote Sensing, Jammu 180006, Jammu & Kashmir, India
4.Univ Jammu, GIS, Jammu 180006, Jammu & Kashmir, India

Recommended Citation:
Shukla, Aparna,Garg, Purushottam Kumar. Evolution of a debris-covered glacier in the western Himalaya during the last four decades (1971-2016): A multiparametric assessment using remote sensing and field observations[J]. GEOMORPHOLOGY,2019-01-01,341:1-14
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