Seasonal ice dynamics in the lower ablation zone of Dagongba Glacier, southeastern Tibetan Plateau, from multitemporal UAV images
Most glaciers on the Tibetan Plateau have experienced continuous mass losses in response to global warming. However, the seasonal dynamics of glaciers on the southeastern Tibetan Plateau have rarely been reported in terms of glacier surface elevation and velocity. This paper presents a first attempt...
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Cambridge University Press
2022
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ftdoajarticles:oai:doaj.org/article:afd0db1256894387b396451e2b02b819 2023-05-15T16:57:35+02:00 Seasonal ice dynamics in the lower ablation zone of Dagongba Glacier, southeastern Tibetan Plateau, from multitemporal UAV images Yin Fu Qiao Liu Guoxiang Liu Bo Zhang Rui Zhang Jialun Cai Xiaowen Wang Wei Xiang 2022-08-01T00:00:00Z https://doi.org/10.1017/jog.2021.123 https://doaj.org/article/afd0db1256894387b396451e2b02b819 EN eng Cambridge University Press https://www.cambridge.org/core/product/identifier/S0022143021001234/type/journal_article https://doaj.org/toc/0022-1430 https://doaj.org/toc/1727-5652 doi:10.1017/jog.2021.123 0022-1430 1727-5652 https://doaj.org/article/afd0db1256894387b396451e2b02b819 Journal of Glaciology, Vol 68, Pp 636-650 (2022) Debris-covered glaciers glacier flow glacier mass balance mountain glaciers Environmental sciences GE1-350 Meteorology. Climatology QC851-999 article 2022 ftdoajarticles https://doi.org/10.1017/jog.2021.123 2023-03-12T01:30:54Z Most glaciers on the Tibetan Plateau have experienced continuous mass losses in response to global warming. However, the seasonal dynamics of glaciers on the southeastern Tibetan Plateau have rarely been reported in terms of glacier surface elevation and velocity. This paper presents a first attempt to explore the seasonal dynamics of the debris-covered Dagongba Glacier within the southeastern Tibetan Plateau. We use the multitemporal unoccupied aerial vehicle images collected over the lower ablation zone on 8 June and 17 October 2018, and 13 May 2019, and then perform an analysis concerning climatic fluctuations. The results reveal that the mean surface elevation decrease of the Dagongba Glacier during the warm season ($2.81\pm 0.44$ m) was remarkably higher than the cold season ($0.72\pm 0.45$ m). Particularly notable glacier surface elevation changes were found around supraglacial lakes and ice cliffs where ice ablation rates were $\sim$3 times higher than the average. In addition, a larger longitudinal decline of glacier surface velocity was observed in the warm season than that in the cold season. In terms of further comparative analysis, the Dagongba Glacier experienced a decrease in surface velocity between 1982–83 and 2018–19, with a decrease in the warm season possibly twice as large as that in the cold season. Article in Journal/Newspaper Journal of Glaciology Directory of Open Access Journals: DOAJ Articles Journal of Glaciology 68 270 636 650 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Debris-covered glaciers glacier flow glacier mass balance mountain glaciers Environmental sciences GE1-350 Meteorology. Climatology QC851-999 |
spellingShingle |
Debris-covered glaciers glacier flow glacier mass balance mountain glaciers Environmental sciences GE1-350 Meteorology. Climatology QC851-999 Yin Fu Qiao Liu Guoxiang Liu Bo Zhang Rui Zhang Jialun Cai Xiaowen Wang Wei Xiang Seasonal ice dynamics in the lower ablation zone of Dagongba Glacier, southeastern Tibetan Plateau, from multitemporal UAV images |
topic_facet |
Debris-covered glaciers glacier flow glacier mass balance mountain glaciers Environmental sciences GE1-350 Meteorology. Climatology QC851-999 |
description |
Most glaciers on the Tibetan Plateau have experienced continuous mass losses in response to global warming. However, the seasonal dynamics of glaciers on the southeastern Tibetan Plateau have rarely been reported in terms of glacier surface elevation and velocity. This paper presents a first attempt to explore the seasonal dynamics of the debris-covered Dagongba Glacier within the southeastern Tibetan Plateau. We use the multitemporal unoccupied aerial vehicle images collected over the lower ablation zone on 8 June and 17 October 2018, and 13 May 2019, and then perform an analysis concerning climatic fluctuations. The results reveal that the mean surface elevation decrease of the Dagongba Glacier during the warm season ($2.81\pm 0.44$ m) was remarkably higher than the cold season ($0.72\pm 0.45$ m). Particularly notable glacier surface elevation changes were found around supraglacial lakes and ice cliffs where ice ablation rates were $\sim$3 times higher than the average. In addition, a larger longitudinal decline of glacier surface velocity was observed in the warm season than that in the cold season. In terms of further comparative analysis, the Dagongba Glacier experienced a decrease in surface velocity between 1982–83 and 2018–19, with a decrease in the warm season possibly twice as large as that in the cold season. |
format |
Article in Journal/Newspaper |
author |
Yin Fu Qiao Liu Guoxiang Liu Bo Zhang Rui Zhang Jialun Cai Xiaowen Wang Wei Xiang |
author_facet |
Yin Fu Qiao Liu Guoxiang Liu Bo Zhang Rui Zhang Jialun Cai Xiaowen Wang Wei Xiang |
author_sort |
Yin Fu |
title |
Seasonal ice dynamics in the lower ablation zone of Dagongba Glacier, southeastern Tibetan Plateau, from multitemporal UAV images |
title_short |
Seasonal ice dynamics in the lower ablation zone of Dagongba Glacier, southeastern Tibetan Plateau, from multitemporal UAV images |
title_full |
Seasonal ice dynamics in the lower ablation zone of Dagongba Glacier, southeastern Tibetan Plateau, from multitemporal UAV images |
title_fullStr |
Seasonal ice dynamics in the lower ablation zone of Dagongba Glacier, southeastern Tibetan Plateau, from multitemporal UAV images |
title_full_unstemmed |
Seasonal ice dynamics in the lower ablation zone of Dagongba Glacier, southeastern Tibetan Plateau, from multitemporal UAV images |
title_sort |
seasonal ice dynamics in the lower ablation zone of dagongba glacier, southeastern tibetan plateau, from multitemporal uav images |
publisher |
Cambridge University Press |
publishDate |
2022 |
url |
https://doi.org/10.1017/jog.2021.123 https://doaj.org/article/afd0db1256894387b396451e2b02b819 |
genre |
Journal of Glaciology |
genre_facet |
Journal of Glaciology |
op_source |
Journal of Glaciology, Vol 68, Pp 636-650 (2022) |
op_relation |
https://www.cambridge.org/core/product/identifier/S0022143021001234/type/journal_article https://doaj.org/toc/0022-1430 https://doaj.org/toc/1727-5652 doi:10.1017/jog.2021.123 0022-1430 1727-5652 https://doaj.org/article/afd0db1256894387b396451e2b02b819 |
op_doi |
https://doi.org/10.1017/jog.2021.123 |
container_title |
Journal of Glaciology |
container_volume |
68 |
container_issue |
270 |
container_start_page |
636 |
op_container_end_page |
650 |
_version_ |
1766049140375027712 |