Revisiting Ice Flux and Mass Balance of the Lambert Glacier–Amery Ice Shelf System Using Multi-Remote-Sensing Datasets, East Antarctica
Due to rapid global warming, the relationship between the mass loss of the Antarctic ice sheet and rising sea levels are attracting widespread attention. The Lambert–Amery glacial system is the largest drainage system in East Antarctica, and its mass balance has an important influence on the stabili...
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ftmdpi:oai:mdpi.com:/2072-4292/14/2/391/ 2023-08-20T03:59:31+02:00 Revisiting Ice Flux and Mass Balance of the Lambert Glacier–Amery Ice Shelf System Using Multi-Remote-Sensing Datasets, East Antarctica Derui Xu Xueyuan Tang Shuhu Yang Yun Zhang Lijuan Wang Lin Li Bo Sun agris 2022-01-14 application/pdf https://doi.org/10.3390/rs14020391 EN eng Multidisciplinary Digital Publishing Institute Remote Sensing Image Processing https://dx.doi.org/10.3390/rs14020391 https://creativecommons.org/licenses/by/4.0/ Remote Sensing; Volume 14; Issue 2; Pages: 391 Lambert Glacier remote sensing data ice flux mass balance BedMachine v2 Landsat-8 Text 2022 ftmdpi https://doi.org/10.3390/rs14020391 2023-08-01T03:50:39Z Due to rapid global warming, the relationship between the mass loss of the Antarctic ice sheet and rising sea levels are attracting widespread attention. The Lambert–Amery glacial system is the largest drainage system in East Antarctica, and its mass balance has an important influence on the stability of the Antarctic ice sheet. In this paper, the recent ice flux in the Lambert Glacier of the Lambert–Amery system was systematically analyzed based on recently updated remote sensing data. According to Landsat-8 ice velocity data from 2018 to April 2019 and the updated Bedmachine v2 ice thickness dataset in 2021, the contribution of ice flux approximately 140 km downstream from Dome A in the Lambert Glacier area to downstream from the glacier is 8.5 ± 1.9Gt·a−1, and the ice flux in the middle of the convergence region is 18.9 ± 2.9Gt·a−1. The ice mass input into the Amery ice shelf through the grounding line of the whole glacier is 19.9 ± 1.3Gt·a−1. The ice flux output from the mainstream area of the grounding line is 19.3 ± 1.0Gt·a−1. Using the annual SMB data of the regional atmospheric climate model (RACMO v2.3) as the quality input, the mass balance of the upper, middle, and lower reaches of the Lambert Glacier was analyzed. The results show that recent positive accumulation appears in the middle region of the glacier (about 74–78°S, 67–85°E) and the net accumulation of the whole glacier is 2.4 ± 3.5Gt·a−1. Although the mass balance of the Lambert Glacier continues to show a positive accumulation, and the positive value in the region is decreasing compared with values obtained in early 2000. Text Amery Ice Shelf Antarc* Antarctic Antarctica East Antarctica Ice Sheet Ice Shelf Lambert Glacier MDPI Open Access Publishing Antarctic The Antarctic East Antarctica Amery ENVELOPE(-94.063,-94.063,56.565,56.565) Amery Ice Shelf ENVELOPE(71.000,71.000,-69.750,-69.750) Lambert Glacier ENVELOPE(67.490,67.490,-73.065,-73.065) Remote Sensing 14 2 391 |
institution |
Open Polar |
collection |
MDPI Open Access Publishing |
op_collection_id |
ftmdpi |
language |
English |
topic |
Lambert Glacier remote sensing data ice flux mass balance BedMachine v2 Landsat-8 |
spellingShingle |
Lambert Glacier remote sensing data ice flux mass balance BedMachine v2 Landsat-8 Derui Xu Xueyuan Tang Shuhu Yang Yun Zhang Lijuan Wang Lin Li Bo Sun Revisiting Ice Flux and Mass Balance of the Lambert Glacier–Amery Ice Shelf System Using Multi-Remote-Sensing Datasets, East Antarctica |
topic_facet |
Lambert Glacier remote sensing data ice flux mass balance BedMachine v2 Landsat-8 |
description |
Due to rapid global warming, the relationship between the mass loss of the Antarctic ice sheet and rising sea levels are attracting widespread attention. The Lambert–Amery glacial system is the largest drainage system in East Antarctica, and its mass balance has an important influence on the stability of the Antarctic ice sheet. In this paper, the recent ice flux in the Lambert Glacier of the Lambert–Amery system was systematically analyzed based on recently updated remote sensing data. According to Landsat-8 ice velocity data from 2018 to April 2019 and the updated Bedmachine v2 ice thickness dataset in 2021, the contribution of ice flux approximately 140 km downstream from Dome A in the Lambert Glacier area to downstream from the glacier is 8.5 ± 1.9Gt·a−1, and the ice flux in the middle of the convergence region is 18.9 ± 2.9Gt·a−1. The ice mass input into the Amery ice shelf through the grounding line of the whole glacier is 19.9 ± 1.3Gt·a−1. The ice flux output from the mainstream area of the grounding line is 19.3 ± 1.0Gt·a−1. Using the annual SMB data of the regional atmospheric climate model (RACMO v2.3) as the quality input, the mass balance of the upper, middle, and lower reaches of the Lambert Glacier was analyzed. The results show that recent positive accumulation appears in the middle region of the glacier (about 74–78°S, 67–85°E) and the net accumulation of the whole glacier is 2.4 ± 3.5Gt·a−1. Although the mass balance of the Lambert Glacier continues to show a positive accumulation, and the positive value in the region is decreasing compared with values obtained in early 2000. |
format |
Text |
author |
Derui Xu Xueyuan Tang Shuhu Yang Yun Zhang Lijuan Wang Lin Li Bo Sun |
author_facet |
Derui Xu Xueyuan Tang Shuhu Yang Yun Zhang Lijuan Wang Lin Li Bo Sun |
author_sort |
Derui Xu |
title |
Revisiting Ice Flux and Mass Balance of the Lambert Glacier–Amery Ice Shelf System Using Multi-Remote-Sensing Datasets, East Antarctica |
title_short |
Revisiting Ice Flux and Mass Balance of the Lambert Glacier–Amery Ice Shelf System Using Multi-Remote-Sensing Datasets, East Antarctica |
title_full |
Revisiting Ice Flux and Mass Balance of the Lambert Glacier–Amery Ice Shelf System Using Multi-Remote-Sensing Datasets, East Antarctica |
title_fullStr |
Revisiting Ice Flux and Mass Balance of the Lambert Glacier–Amery Ice Shelf System Using Multi-Remote-Sensing Datasets, East Antarctica |
title_full_unstemmed |
Revisiting Ice Flux and Mass Balance of the Lambert Glacier–Amery Ice Shelf System Using Multi-Remote-Sensing Datasets, East Antarctica |
title_sort |
revisiting ice flux and mass balance of the lambert glacier–amery ice shelf system using multi-remote-sensing datasets, east antarctica |
publisher |
Multidisciplinary Digital Publishing Institute |
publishDate |
2022 |
url |
https://doi.org/10.3390/rs14020391 |
op_coverage |
agris |
long_lat |
ENVELOPE(-94.063,-94.063,56.565,56.565) ENVELOPE(71.000,71.000,-69.750,-69.750) ENVELOPE(67.490,67.490,-73.065,-73.065) |
geographic |
Antarctic The Antarctic East Antarctica Amery Amery Ice Shelf Lambert Glacier |
geographic_facet |
Antarctic The Antarctic East Antarctica Amery Amery Ice Shelf Lambert Glacier |
genre |
Amery Ice Shelf Antarc* Antarctic Antarctica East Antarctica Ice Sheet Ice Shelf Lambert Glacier |
genre_facet |
Amery Ice Shelf Antarc* Antarctic Antarctica East Antarctica Ice Sheet Ice Shelf Lambert Glacier |
op_source |
Remote Sensing; Volume 14; Issue 2; Pages: 391 |
op_relation |
Remote Sensing Image Processing https://dx.doi.org/10.3390/rs14020391 |
op_rights |
https://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.3390/rs14020391 |
container_title |
Remote Sensing |
container_volume |
14 |
container_issue |
2 |
container_start_page |
391 |
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1774713329299750912 |