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Glacier mass loss in the Alaknanda basin, Garhwal Himalaya on a decadal scale

Remya, SN and Kulkarni, AV and Hassan Syed, T and Nainwal, HC (2022) Glacier mass loss in the Alaknanda basin, Garhwal Himalaya on a decadal scale. In: Geocarto International, 37 (10). pp. 3014-3032.

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Official URL: https://doi.org/10.1080/10106049.2020.1844309


The Himalayan glaciers significantly contribute to the largest river systems like the Indus, Ganga, and the Brahmaputra. The change in glacial area and mass can affect the mountain community and people living in the Indo-Gangetic plain. The present study adopted the geodetic method to estimate the elevation change and mass budget of 61 glaciers in the Alaknanda Basin, using the satellite data of Cartosat-1 (2011, 2014, 2017) and SRTM (2000). Besides, the DEM of 1962 (SOI Toposheet) and 2000 (SRTM) is used to estimate the mass budget of Satopanth (SPG) and Bhagirath Kharak glaciers (BKG). The field debris thickness of SPG (2015-2017) is compared with the elevation change (2000-2017). Further, we have compared the mass loss of the glaciers with their volume. The results suggest the sustained mass loss of 1.85 ± 0.10 Gt out of 33.9 ± 8.8 Gt for 61 glaciers in the basin from 2000-2017. The mass loss of SPG and BKG during 2000-2017 is 0.20 ± 0.02 Gt and 0.24 ± 0.03 Gt, whereas from 1962 to 2000, is 0.083 ± 0.03 Gt and 0.091 ± 0.04 Gt, respectively. The analysis facilitates a better understanding of glacier mass changes in the Alaknanda basin on a multi-decadal scale. © 2020 Informa UK Limited, trading as Taylor & Francis Group.

Item Type: Journal Article
Publication: Geocarto International
Publisher: Taylor and Francis Ltd.
Additional Information: The copyright for this article belongs to the Taylor and Francis Ltd.
Keywords: geodetic datum; glacier dynamics; glacier mass balance, Alaknanda River; Garhwal Himalayas; Himalayas; India; Uttarakhand
Department/Centre: Division of Mechanical Sciences > Divecha Centre for Climate Change
Date Deposited: 21 Sep 2022 09:40
Last Modified: 21 Sep 2022 09:40
URI: https://eprints.iisc.ac.in/id/eprint/76919

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