Debris-cover impact on glacier melting in the Upper Indus Basin
Out of 4530 glaciers covering ∼4770 km2 in the Upper Indus Basin, viz., Chenab, Zanaskar and Suru sub-basins, we selected topographically and morphologically homogeneous set of 98 glaciers; 56 debris-covered and 42 clean to assess the impact of debris-cover on glacier melting. Satellite data analysi...
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ftnipr:oai:nipr.repo.nii.ac.jp:00016970 2023-05-15T18:02:48+02:00 Debris-cover impact on glacier melting in the Upper Indus Basin 2022-09 https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=16970 http://id.nii.ac.jp/1291/00016839/ en eng https://doi.org/10.1016/j.polar.2022.100867 https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=16970 http://id.nii.ac.jp/1291/00016839/ Polar Science, 33, 100867(2022-09) 18739652 Glacier recession Debris-cover Topographical characteristics Himalaya Journal Article 2022 ftnipr https://doi.org/10.1016/j.polar.2022.100867 2022-12-03T19:43:26Z Out of 4530 glaciers covering ∼4770 km2 in the Upper Indus Basin, viz., Chenab, Zanaskar and Suru sub-basins, we selected topographically and morphologically homogeneous set of 98 glaciers; 56 debris-covered and 42 clean to assess the impact of debris-cover on glacier melting. Satellite data analysis from 2000 to 2017 showed that the debris-covered glaciers have melted slower (2.49 ± 0.05%; 0.15%a−1) than the clean glaciers (4.07 ± 0.03%; 0.24%a−1). The intra-basin analysis revealed that clean and debris-covered glaciers in the Chenab have melted 2.34 ± 0.17% and 1.1 ± 0.30% (0.14%a−1 and 0.06%a−1) and retreated 8.82 ± 2.67ma−1 and 5.7 ± 2.67ma−1 respectively. Similarly, clean and debris-covered glaciers in the Zanaskar have melted at similar rates of 4.58 ± 0.07% and 4.55 ± 0.21% (0.27%a−1 and 0.25%a−1) and retreated 10.0 ± 2.67ma−1 and 8.4 ± 2.67ma−1 respectively. Clean and debris-covered glaciers in the Suru have melted 5.56 ± 0.09% and 4.53 ± 0.14% (0.33%a−1 and 0.27%a−1) and retreated 9.6 ± 2.67ma−1 and 7.0 ± 2.67ma−1 respectively. Extensive debris-cover of ∼32.3% modulates glacier loss in the Chenab and sparse debris-cover of 11.4% and 6.4% in the Suru and Zanaskar enhances the melting of the debris-covered glaciers. Overall, debris-covered glaciers melted slower than the clean glaciers, with inter- and intra-basin variations, suggesting that debris-cover plays a complex but significant role in modulating glacier melting under climate change. Article in Journal/Newspaper Polar Science Polar Science National Institute of Polar Research Repository, Japan Polar Science 33 100867 |
institution |
Open Polar |
collection |
National Institute of Polar Research Repository, Japan |
op_collection_id |
ftnipr |
language |
English |
topic |
Glacier recession Debris-cover Topographical characteristics Himalaya |
spellingShingle |
Glacier recession Debris-cover Topographical characteristics Himalaya Debris-cover impact on glacier melting in the Upper Indus Basin |
topic_facet |
Glacier recession Debris-cover Topographical characteristics Himalaya |
description |
Out of 4530 glaciers covering ∼4770 km2 in the Upper Indus Basin, viz., Chenab, Zanaskar and Suru sub-basins, we selected topographically and morphologically homogeneous set of 98 glaciers; 56 debris-covered and 42 clean to assess the impact of debris-cover on glacier melting. Satellite data analysis from 2000 to 2017 showed that the debris-covered glaciers have melted slower (2.49 ± 0.05%; 0.15%a−1) than the clean glaciers (4.07 ± 0.03%; 0.24%a−1). The intra-basin analysis revealed that clean and debris-covered glaciers in the Chenab have melted 2.34 ± 0.17% and 1.1 ± 0.30% (0.14%a−1 and 0.06%a−1) and retreated 8.82 ± 2.67ma−1 and 5.7 ± 2.67ma−1 respectively. Similarly, clean and debris-covered glaciers in the Zanaskar have melted at similar rates of 4.58 ± 0.07% and 4.55 ± 0.21% (0.27%a−1 and 0.25%a−1) and retreated 10.0 ± 2.67ma−1 and 8.4 ± 2.67ma−1 respectively. Clean and debris-covered glaciers in the Suru have melted 5.56 ± 0.09% and 4.53 ± 0.14% (0.33%a−1 and 0.27%a−1) and retreated 9.6 ± 2.67ma−1 and 7.0 ± 2.67ma−1 respectively. Extensive debris-cover of ∼32.3% modulates glacier loss in the Chenab and sparse debris-cover of 11.4% and 6.4% in the Suru and Zanaskar enhances the melting of the debris-covered glaciers. Overall, debris-covered glaciers melted slower than the clean glaciers, with inter- and intra-basin variations, suggesting that debris-cover plays a complex but significant role in modulating glacier melting under climate change. |
format |
Article in Journal/Newspaper |
title |
Debris-cover impact on glacier melting in the Upper Indus Basin |
title_short |
Debris-cover impact on glacier melting in the Upper Indus Basin |
title_full |
Debris-cover impact on glacier melting in the Upper Indus Basin |
title_fullStr |
Debris-cover impact on glacier melting in the Upper Indus Basin |
title_full_unstemmed |
Debris-cover impact on glacier melting in the Upper Indus Basin |
title_sort |
debris-cover impact on glacier melting in the upper indus basin |
publishDate |
2022 |
url |
https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=16970 http://id.nii.ac.jp/1291/00016839/ |
genre |
Polar Science Polar Science |
genre_facet |
Polar Science Polar Science |
op_relation |
https://doi.org/10.1016/j.polar.2022.100867 https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=16970 http://id.nii.ac.jp/1291/00016839/ Polar Science, 33, 100867(2022-09) 18739652 |
op_doi |
https://doi.org/10.1016/j.polar.2022.100867 |
container_title |
Polar Science |
container_volume |
33 |
container_start_page |
100867 |
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1766173452178292736 |