Recent high-resolution Antarctic ice velocity maps reveal increased mass loss in Wilkes Land, East Antarctica
We constructed Antarctic ice velocity maps from Landsat 8 images for the years 2014 and 2015 at a high spatial resolution (100 m). These maps were assembled from 10,690 scenes of displacement vectors inferred from more than 10,000 optical images acquired from December 2013 through March 2016. We est...
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ftpubmed:oai:pubmedcentral.nih.gov:5852037 2023-05-15T13:51:26+02:00 Recent high-resolution Antarctic ice velocity maps reveal increased mass loss in Wilkes Land, East Antarctica Shen, Qiang Wang, Hansheng Shum, C. K. Jiang, Liming Hsu, Hou Tse Dong, Jinglong 2018-03-14 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5852037/ http://www.ncbi.nlm.nih.gov/pubmed/29540750 https://doi.org/10.1038/s41598-018-22765-0 en eng Nature Publishing Group UK http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5852037/ http://www.ncbi.nlm.nih.gov/pubmed/29540750 http://dx.doi.org/10.1038/s41598-018-22765-0 © The Author(s) 2018 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/. CC-BY Article Text 2018 ftpubmed https://doi.org/10.1038/s41598-018-22765-0 2018-03-25T01:05:08Z We constructed Antarctic ice velocity maps from Landsat 8 images for the years 2014 and 2015 at a high spatial resolution (100 m). These maps were assembled from 10,690 scenes of displacement vectors inferred from more than 10,000 optical images acquired from December 2013 through March 2016. We estimated the mass discharge of the Antarctic ice sheet in 2008, 2014, and 2015 using the Landsat ice velocity maps, interferometric synthetic aperture radar (InSAR)-derived ice velocity maps (~2008) available from prior studies, and ice thickness data. An increased mass discharge (53 ± 14 Gt yr−1) was found in the East Indian Ocean sector since 2008 due to unexpected widespread glacial acceleration in Wilkes Land, East Antarctica, while the other five oceanic sectors did not exhibit significant changes. However, present-day increased mass loss was found by previous studies predominantly in west Antarctica and the Antarctic Peninsula. The newly discovered increased mass loss in Wilkes Land suggests that the ocean heat flux may already be influencing ice dynamics in the marine-based sector of the East Antarctic ice sheet (EAIS). The marine-based sector could be adversely impacted by ongoing warming in the Southern Ocean, and this process may be conducive to destabilization. Text Antarc* Antarctic Antarctic Peninsula Antarctica East Antarctica Ice Sheet Southern Ocean West Antarctica Wilkes Land PubMed Central (PMC) Antarctic Antarctic Peninsula East Antarctic Ice Sheet East Antarctica Indian Southern Ocean The Antarctic West Antarctica Wilkes Land ENVELOPE(120.000,120.000,-69.000,-69.000) Scientific Reports 8 1 |
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Article Shen, Qiang Wang, Hansheng Shum, C. K. Jiang, Liming Hsu, Hou Tse Dong, Jinglong Recent high-resolution Antarctic ice velocity maps reveal increased mass loss in Wilkes Land, East Antarctica |
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Article |
description |
We constructed Antarctic ice velocity maps from Landsat 8 images for the years 2014 and 2015 at a high spatial resolution (100 m). These maps were assembled from 10,690 scenes of displacement vectors inferred from more than 10,000 optical images acquired from December 2013 through March 2016. We estimated the mass discharge of the Antarctic ice sheet in 2008, 2014, and 2015 using the Landsat ice velocity maps, interferometric synthetic aperture radar (InSAR)-derived ice velocity maps (~2008) available from prior studies, and ice thickness data. An increased mass discharge (53 ± 14 Gt yr−1) was found in the East Indian Ocean sector since 2008 due to unexpected widespread glacial acceleration in Wilkes Land, East Antarctica, while the other five oceanic sectors did not exhibit significant changes. However, present-day increased mass loss was found by previous studies predominantly in west Antarctica and the Antarctic Peninsula. The newly discovered increased mass loss in Wilkes Land suggests that the ocean heat flux may already be influencing ice dynamics in the marine-based sector of the East Antarctic ice sheet (EAIS). The marine-based sector could be adversely impacted by ongoing warming in the Southern Ocean, and this process may be conducive to destabilization. |
format |
Text |
author |
Shen, Qiang Wang, Hansheng Shum, C. K. Jiang, Liming Hsu, Hou Tse Dong, Jinglong |
author_facet |
Shen, Qiang Wang, Hansheng Shum, C. K. Jiang, Liming Hsu, Hou Tse Dong, Jinglong |
author_sort |
Shen, Qiang |
title |
Recent high-resolution Antarctic ice velocity maps reveal increased mass loss in Wilkes Land, East Antarctica |
title_short |
Recent high-resolution Antarctic ice velocity maps reveal increased mass loss in Wilkes Land, East Antarctica |
title_full |
Recent high-resolution Antarctic ice velocity maps reveal increased mass loss in Wilkes Land, East Antarctica |
title_fullStr |
Recent high-resolution Antarctic ice velocity maps reveal increased mass loss in Wilkes Land, East Antarctica |
title_full_unstemmed |
Recent high-resolution Antarctic ice velocity maps reveal increased mass loss in Wilkes Land, East Antarctica |
title_sort |
recent high-resolution antarctic ice velocity maps reveal increased mass loss in wilkes land, east antarctica |
publisher |
Nature Publishing Group UK |
publishDate |
2018 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5852037/ http://www.ncbi.nlm.nih.gov/pubmed/29540750 https://doi.org/10.1038/s41598-018-22765-0 |
long_lat |
ENVELOPE(120.000,120.000,-69.000,-69.000) |
geographic |
Antarctic Antarctic Peninsula East Antarctic Ice Sheet East Antarctica Indian Southern Ocean The Antarctic West Antarctica Wilkes Land |
geographic_facet |
Antarctic Antarctic Peninsula East Antarctic Ice Sheet East Antarctica Indian Southern Ocean The Antarctic West Antarctica Wilkes Land |
genre |
Antarc* Antarctic Antarctic Peninsula Antarctica East Antarctica Ice Sheet Southern Ocean West Antarctica Wilkes Land |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Antarctica East Antarctica Ice Sheet Southern Ocean West Antarctica Wilkes Land |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5852037/ http://www.ncbi.nlm.nih.gov/pubmed/29540750 http://dx.doi.org/10.1038/s41598-018-22765-0 |
op_rights |
© The Author(s) 2018 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/. |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1038/s41598-018-22765-0 |
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Scientific Reports |
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