Understanding the interrelationships among mass balance, meteorology, discharge and surface velocity on Chhota Shigri Glacier over 2002–2019 using in situ measurements
Abstract The Himalayan glaciers contribute significantly to regional water resources. However, limited field observations restrict our understanding of glacier dynamics and behaviour. Here, we investigated the long-term in situ mass balance, meteorology, ice velocity and discharge of the Chhota Shig...
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Language: | English |
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Cambridge University Press (CUP)
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Online Access: | http://dx.doi.org/10.1017/jog.2020.42 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143020000428 |
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crcambridgeupr:10.1017/jog.2020.42 2024-10-13T14:08:40+00:00 Understanding the interrelationships among mass balance, meteorology, discharge and surface velocity on Chhota Shigri Glacier over 2002–2019 using in situ measurements Mandal, Arindan Ramanathan, Alagappan Azam, Mohd. Farooq Angchuk, Thupstan Soheb, Mohd Kumar, Naveen Pottakkal, Jose George Vatsal, Sarvagya Mishra, Somdutta Singh, Virendra Bahadur 2020 http://dx.doi.org/10.1017/jog.2020.42 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143020000428 en eng Cambridge University Press (CUP) http://creativecommons.org/licenses/by-nc-sa/4.0/ Journal of Glaciology volume 66, issue 259, page 727-741 ISSN 0022-1430 1727-5652 journal-article 2020 crcambridgeupr https://doi.org/10.1017/jog.2020.42 2024-09-18T04:03:45Z Abstract The Himalayan glaciers contribute significantly to regional water resources. However, limited field observations restrict our understanding of glacier dynamics and behaviour. Here, we investigated the long-term in situ mass balance, meteorology, ice velocity and discharge of the Chhota Shigri Glacier. The mean annual glacier-wide mass balance was negative, −0.46 ± 0.40 m w.e. a −1 for the period 2002–2019 corresponding to a cumulative wastage of −7.87 m w.e. Winter mass balance was 1.15 m w.e. a −1 and summer mass balance was −1.35 m w.e. a −1 over 2009–2019. Surface ice velocity has decreased on average by 25–42% in the lower and middle ablation zone (below 4700 m a.s.l.) since 2003; however, no substantial change was observed at higher altitudes. The decrease in velocity suggests that the glacier is adjusting its flow in response to negative mass balance. The summer discharge begins to rise from May and peaks in July, with a contribution of 43%, followed by 38% and 19% in August and September, respectively. The discharge pattern closely follows the air temperature. The long-term observation on the ‘Chhota Shigri – a benchmark glacier’, shows a mass wastage which corresponds to the slowdown of the glacier in the past two decades. Article in Journal/Newspaper Journal of Glaciology Cambridge University Press Journal of Glaciology 66 259 727 741 |
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Open Polar |
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Cambridge University Press |
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crcambridgeupr |
language |
English |
description |
Abstract The Himalayan glaciers contribute significantly to regional water resources. However, limited field observations restrict our understanding of glacier dynamics and behaviour. Here, we investigated the long-term in situ mass balance, meteorology, ice velocity and discharge of the Chhota Shigri Glacier. The mean annual glacier-wide mass balance was negative, −0.46 ± 0.40 m w.e. a −1 for the period 2002–2019 corresponding to a cumulative wastage of −7.87 m w.e. Winter mass balance was 1.15 m w.e. a −1 and summer mass balance was −1.35 m w.e. a −1 over 2009–2019. Surface ice velocity has decreased on average by 25–42% in the lower and middle ablation zone (below 4700 m a.s.l.) since 2003; however, no substantial change was observed at higher altitudes. The decrease in velocity suggests that the glacier is adjusting its flow in response to negative mass balance. The summer discharge begins to rise from May and peaks in July, with a contribution of 43%, followed by 38% and 19% in August and September, respectively. The discharge pattern closely follows the air temperature. The long-term observation on the ‘Chhota Shigri – a benchmark glacier’, shows a mass wastage which corresponds to the slowdown of the glacier in the past two decades. |
format |
Article in Journal/Newspaper |
author |
Mandal, Arindan Ramanathan, Alagappan Azam, Mohd. Farooq Angchuk, Thupstan Soheb, Mohd Kumar, Naveen Pottakkal, Jose George Vatsal, Sarvagya Mishra, Somdutta Singh, Virendra Bahadur |
spellingShingle |
Mandal, Arindan Ramanathan, Alagappan Azam, Mohd. Farooq Angchuk, Thupstan Soheb, Mohd Kumar, Naveen Pottakkal, Jose George Vatsal, Sarvagya Mishra, Somdutta Singh, Virendra Bahadur Understanding the interrelationships among mass balance, meteorology, discharge and surface velocity on Chhota Shigri Glacier over 2002–2019 using in situ measurements |
author_facet |
Mandal, Arindan Ramanathan, Alagappan Azam, Mohd. Farooq Angchuk, Thupstan Soheb, Mohd Kumar, Naveen Pottakkal, Jose George Vatsal, Sarvagya Mishra, Somdutta Singh, Virendra Bahadur |
author_sort |
Mandal, Arindan |
title |
Understanding the interrelationships among mass balance, meteorology, discharge and surface velocity on Chhota Shigri Glacier over 2002–2019 using in situ measurements |
title_short |
Understanding the interrelationships among mass balance, meteorology, discharge and surface velocity on Chhota Shigri Glacier over 2002–2019 using in situ measurements |
title_full |
Understanding the interrelationships among mass balance, meteorology, discharge and surface velocity on Chhota Shigri Glacier over 2002–2019 using in situ measurements |
title_fullStr |
Understanding the interrelationships among mass balance, meteorology, discharge and surface velocity on Chhota Shigri Glacier over 2002–2019 using in situ measurements |
title_full_unstemmed |
Understanding the interrelationships among mass balance, meteorology, discharge and surface velocity on Chhota Shigri Glacier over 2002–2019 using in situ measurements |
title_sort |
understanding the interrelationships among mass balance, meteorology, discharge and surface velocity on chhota shigri glacier over 2002–2019 using in situ measurements |
publisher |
Cambridge University Press (CUP) |
publishDate |
2020 |
url |
http://dx.doi.org/10.1017/jog.2020.42 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143020000428 |
genre |
Journal of Glaciology |
genre_facet |
Journal of Glaciology |
op_source |
Journal of Glaciology volume 66, issue 259, page 727-741 ISSN 0022-1430 1727-5652 |
op_rights |
http://creativecommons.org/licenses/by-nc-sa/4.0/ |
op_doi |
https://doi.org/10.1017/jog.2020.42 |
container_title |
Journal of Glaciology |
container_volume |
66 |
container_issue |
259 |
container_start_page |
727 |
op_container_end_page |
741 |
_version_ |
1812815386354122752 |