Mass changes of the northern Antarctic Peninsula Ice Sheet derived from repeat bi-static synthetic aperture radar acquisitions for the period 2013–2017
Some of the highest specific mass change rates in Antarctica are reported for the Antarctic Peninsula. However, the existing estimates for the northern Antarctic Peninsula ( <70 ∘ S) are either spatially limited or are affected by considerable uncertainties. The complex topography, frequent c...
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ftcopernicus:oai:publications.copernicus.org:tc108439 2024-09-15T17:45:13+00:00 Mass changes of the northern Antarctic Peninsula Ice Sheet derived from repeat bi-static synthetic aperture radar acquisitions for the period 2013–2017 Seehaus, Thorsten Sommer, Christian Dethinne, Thomas Malz, Philipp 2023-11-06 application/pdf https://doi.org/10.5194/tc-17-4629-2023 https://tc.copernicus.org/articles/17/4629/2023/ eng eng doi:10.5194/tc-17-4629-2023 https://tc.copernicus.org/articles/17/4629/2023/ eISSN: 1994-0424 Text 2023 ftcopernicus https://doi.org/10.5194/tc-17-4629-2023 2024-08-28T05:24:15Z Some of the highest specific mass change rates in Antarctica are reported for the Antarctic Peninsula. However, the existing estimates for the northern Antarctic Peninsula ( <70 ∘ S) are either spatially limited or are affected by considerable uncertainties. The complex topography, frequent cloud cover, limitations in ice thickness information, boundary effects, and uncertain glacial–isostatic adjustment estimates affect the ice sheet mass change estimates using altimetry, gravimetry, or the input-output method. Within this study, the first assessment of the geodetic mass balance throughout the ice sheet of the northern Antarctic Peninsula is carried out employing bi-static synthetic aperture radar (SAR) data from the TanDEM-X satellite mission. Repeat coverages from the austral winters of 2013 and 2017 are employed. Overall, coverage of 96.4 % of the study area by surface elevation change measurements and a total mass budget of - 24.1 ± 2.8 <svg:svg xmlns:svg="http://www.w3.org/2000/svg" width="58pt" height="10pt" class="svg-formula" dspmath="mathimg" md5hash="3db16c0a953d98b866947d147ebdb7fc"><svg:image xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="tc-17-4629-2023-ie00001.svg" width="58pt" height="10pt" src="tc-17-4629-2023-ie00001.png"/> </svg:svg> Gt a −1 are revealed. The spatial distribution of the surface elevation and mass changes points out that the former ice shelf tributary glaciers of the Prince Gustav Channel, Larsen A and B, and Wordie ice shelves are the hotspots of ice loss in the study area and highlights the long-lasting dynamic glacier adjustments after the ice shelf break-up events. The highest mass change rate is revealed for the Airy–Seller–Fleming glacier system at - 4.9 ± 0.6 <svg:svg xmlns:svg="http://www.w3.org/2000/svg" width="52pt" height="10pt" class="svg-formula" dspmath="mathimg" md5hash="f9aaed9b17a621f3881ebff8c6239a6b"><svg:image xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="tc-17-4629-2023-ie00002.svg" width="52pt" ... Text Antarc* Antarctic Antarctic Peninsula Antarctica Ice Sheet Ice Shelf Ice Shelves Copernicus Publications: E-Journals The Cryosphere 17 11 4629 4644 |
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Open Polar |
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Copernicus Publications: E-Journals |
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ftcopernicus |
language |
English |
description |
Some of the highest specific mass change rates in Antarctica are reported for the Antarctic Peninsula. However, the existing estimates for the northern Antarctic Peninsula ( <70 ∘ S) are either spatially limited or are affected by considerable uncertainties. The complex topography, frequent cloud cover, limitations in ice thickness information, boundary effects, and uncertain glacial–isostatic adjustment estimates affect the ice sheet mass change estimates using altimetry, gravimetry, or the input-output method. Within this study, the first assessment of the geodetic mass balance throughout the ice sheet of the northern Antarctic Peninsula is carried out employing bi-static synthetic aperture radar (SAR) data from the TanDEM-X satellite mission. Repeat coverages from the austral winters of 2013 and 2017 are employed. Overall, coverage of 96.4 % of the study area by surface elevation change measurements and a total mass budget of - 24.1 ± 2.8 <svg:svg xmlns:svg="http://www.w3.org/2000/svg" width="58pt" height="10pt" class="svg-formula" dspmath="mathimg" md5hash="3db16c0a953d98b866947d147ebdb7fc"><svg:image xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="tc-17-4629-2023-ie00001.svg" width="58pt" height="10pt" src="tc-17-4629-2023-ie00001.png"/> </svg:svg> Gt a −1 are revealed. The spatial distribution of the surface elevation and mass changes points out that the former ice shelf tributary glaciers of the Prince Gustav Channel, Larsen A and B, and Wordie ice shelves are the hotspots of ice loss in the study area and highlights the long-lasting dynamic glacier adjustments after the ice shelf break-up events. The highest mass change rate is revealed for the Airy–Seller–Fleming glacier system at - 4.9 ± 0.6 <svg:svg xmlns:svg="http://www.w3.org/2000/svg" width="52pt" height="10pt" class="svg-formula" dspmath="mathimg" md5hash="f9aaed9b17a621f3881ebff8c6239a6b"><svg:image xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="tc-17-4629-2023-ie00002.svg" width="52pt" ... |
format |
Text |
author |
Seehaus, Thorsten Sommer, Christian Dethinne, Thomas Malz, Philipp |
spellingShingle |
Seehaus, Thorsten Sommer, Christian Dethinne, Thomas Malz, Philipp Mass changes of the northern Antarctic Peninsula Ice Sheet derived from repeat bi-static synthetic aperture radar acquisitions for the period 2013–2017 |
author_facet |
Seehaus, Thorsten Sommer, Christian Dethinne, Thomas Malz, Philipp |
author_sort |
Seehaus, Thorsten |
title |
Mass changes of the northern Antarctic Peninsula Ice Sheet derived from repeat bi-static synthetic aperture radar acquisitions for the period 2013–2017 |
title_short |
Mass changes of the northern Antarctic Peninsula Ice Sheet derived from repeat bi-static synthetic aperture radar acquisitions for the period 2013–2017 |
title_full |
Mass changes of the northern Antarctic Peninsula Ice Sheet derived from repeat bi-static synthetic aperture radar acquisitions for the period 2013–2017 |
title_fullStr |
Mass changes of the northern Antarctic Peninsula Ice Sheet derived from repeat bi-static synthetic aperture radar acquisitions for the period 2013–2017 |
title_full_unstemmed |
Mass changes of the northern Antarctic Peninsula Ice Sheet derived from repeat bi-static synthetic aperture radar acquisitions for the period 2013–2017 |
title_sort |
mass changes of the northern antarctic peninsula ice sheet derived from repeat bi-static synthetic aperture radar acquisitions for the period 2013–2017 |
publishDate |
2023 |
url |
https://doi.org/10.5194/tc-17-4629-2023 https://tc.copernicus.org/articles/17/4629/2023/ |
genre |
Antarc* Antarctic Antarctic Peninsula Antarctica Ice Sheet Ice Shelf Ice Shelves |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Antarctica Ice Sheet Ice Shelf Ice Shelves |
op_source |
eISSN: 1994-0424 |
op_relation |
doi:10.5194/tc-17-4629-2023 https://tc.copernicus.org/articles/17/4629/2023/ |
op_doi |
https://doi.org/10.5194/tc-17-4629-2023 |
container_title |
The Cryosphere |
container_volume |
17 |
container_issue |
11 |
container_start_page |
4629 |
op_container_end_page |
4644 |
_version_ |
1810492956028698624 |