Understanding the interrelationships among mass balance, meteorology, discharge and surface velocity on Chhota Shigri Glacier over 2002–2019 using in situ measurements
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 Glacie...
Published in: | Journal of Glaciology |
---|---|
Main Authors: | , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Cambridge University Press
2020
|
Subjects: | |
Online Access: | https://doi.org/10.1017/jog.2020.42 https://doaj.org/article/8998322a98314a57a91e14b123fd1fa1 |
id |
ftdoajarticles:oai:doaj.org/article:8998322a98314a57a91e14b123fd1fa1 |
---|---|
record_format |
openpolar |
spelling |
ftdoajarticles:oai:doaj.org/article:8998322a98314a57a91e14b123fd1fa1 2023-05-15T16:57:34+02:00 Understanding the interrelationships among mass balance, meteorology, discharge and surface velocity on Chhota Shigri Glacier over 2002–2019 using in situ measurements Arindan Mandal Alagappan Ramanathan Mohd. Farooq Azam Thupstan Angchuk Mohd Soheb Naveen Kumar Jose George Pottakkal Sarvagya Vatsal Somdutta Mishra Virendra Bahadur Singh 2020-10-01T00:00:00Z https://doi.org/10.1017/jog.2020.42 https://doaj.org/article/8998322a98314a57a91e14b123fd1fa1 EN eng Cambridge University Press https://www.cambridge.org/core/product/identifier/S0022143020000428/type/journal_article https://doaj.org/toc/0022-1430 https://doaj.org/toc/1727-5652 doi:10.1017/jog.2020.42 0022-1430 1727-5652 https://doaj.org/article/8998322a98314a57a91e14b123fd1fa1 Journal of Glaciology, Vol 66, Pp 727-741 (2020) Glacier discharge glacier mass balance ice velocity Western Himalaya Environmental sciences GE1-350 Meteorology. Climatology QC851-999 article 2020 ftdoajarticles https://doi.org/10.1017/jog.2020.42 2023-03-12T01:30:57Z 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 Directory of Open Access Journals: DOAJ Articles Journal of Glaciology 66 259 727 741 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Glacier discharge glacier mass balance ice velocity Western Himalaya Environmental sciences GE1-350 Meteorology. Climatology QC851-999 |
spellingShingle |
Glacier discharge glacier mass balance ice velocity Western Himalaya Environmental sciences GE1-350 Meteorology. Climatology QC851-999 Arindan Mandal Alagappan Ramanathan Mohd. Farooq Azam Thupstan Angchuk Mohd Soheb Naveen Kumar Jose George Pottakkal Sarvagya Vatsal Somdutta Mishra Virendra Bahadur Singh Understanding the interrelationships among mass balance, meteorology, discharge and surface velocity on Chhota Shigri Glacier over 2002–2019 using in situ measurements |
topic_facet |
Glacier discharge glacier mass balance ice velocity Western Himalaya Environmental sciences GE1-350 Meteorology. Climatology QC851-999 |
description |
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 |
Arindan Mandal Alagappan Ramanathan Mohd. Farooq Azam Thupstan Angchuk Mohd Soheb Naveen Kumar Jose George Pottakkal Sarvagya Vatsal Somdutta Mishra Virendra Bahadur Singh |
author_facet |
Arindan Mandal Alagappan Ramanathan Mohd. Farooq Azam Thupstan Angchuk Mohd Soheb Naveen Kumar Jose George Pottakkal Sarvagya Vatsal Somdutta Mishra Virendra Bahadur Singh |
author_sort |
Arindan Mandal |
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 |
publishDate |
2020 |
url |
https://doi.org/10.1017/jog.2020.42 https://doaj.org/article/8998322a98314a57a91e14b123fd1fa1 |
genre |
Journal of Glaciology |
genre_facet |
Journal of Glaciology |
op_source |
Journal of Glaciology, Vol 66, Pp 727-741 (2020) |
op_relation |
https://www.cambridge.org/core/product/identifier/S0022143020000428/type/journal_article https://doaj.org/toc/0022-1430 https://doaj.org/toc/1727-5652 doi:10.1017/jog.2020.42 0022-1430 1727-5652 https://doaj.org/article/8998322a98314a57a91e14b123fd1fa1 |
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_ |
1766049139439697920 |