Two decades of Antarctic coastal-change revealed by satellite imagery and deep learning
Antarctica’s coastline is constantly changing by moving glacier and ice shelf fronts. The extent of glaciers and ice shelves influences the ice discharge and sea level contribution of the Antarctic Ice Sheet. Therefore, it is crucial to assess where ice shelf areas with strong buttressing forces are...
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ftdlr:oai:elib.dlr.de:142260 2024-05-19T07:29:09+00:00 Two decades of Antarctic coastal-change revealed by satellite imagery and deep learning Baumhoer, Celia Dietz, Andreas Dirscherl, Mariel Künzer, Claudia 2021-04 application/pdf https://elib.dlr.de/142260/ https://elib.dlr.de/142260/1/2021-04-23_vEGU2021_Baumhoer.pdf en eng https://elib.dlr.de/142260/1/2021-04-23_vEGU2021_Baumhoer.pdf Baumhoer, Celia und Dietz, Andreas und Dirscherl, Mariel und Künzer, Claudia (2021) Two decades of Antarctic coastal-change revealed by satellite imagery and deep learning. vEGU21, 2021-04-19 - 2021-04-30, virtuell. Dynamik der Landoberfläche Konferenzbeitrag NonPeerReviewed 2021 ftdlr 2024-04-25T00:56:38Z Antarctica’s coastline is constantly changing by moving glacier and ice shelf fronts. The extent of glaciers and ice shelves influences the ice discharge and sea level contribution of the Antarctic Ice Sheet. Therefore, it is crucial to assess where ice shelf areas with strong buttressing forces are lost. So far, those changes have not been assessed for entire Antarctica within comparable time frames. We present a framework for circum-Antarctic coastline extraction based on a U-Net architecture. Antarctic coastal-change is calculated by using a deep learning derived coastline for the year 2018 in combination with earlier manual derived coastlines of 1997 and 2009. For the first time, this allows to compare circum-Antarctic changes in glacier and ice shelf front position for the last two decades. We found that the Antarctic Ice Sheet area decreased by -29,618±1,193 km2 in extent between 1997-2008 and gained an area of 7,108±1,029km2 between 2009 and 2018. Retreat dominated for the Antarctic Peninsula and West Antarctica and advance for the East Antarctic Ice Sheet over the entire investigation period. The only exception in East Antarctica was Wilkes Land experiencing simultaneous calving front retreat of several glaciers between 2009-2018. Biggest tabular iceberg calving events occurred at Ronne and Ross Ice Shelf within their natural calving cycle between 1997-2008. Future work includes the continuous mapping of Antarctica’s coastal-change on a more frequent temporal scale. Conference Object Antarc* Antarctic Antarctic Peninsula Antarctica East Antarctica Ice Sheet Ice Shelf Ice Shelves Iceberg* Ross Ice Shelf West Antarctica Wilkes Land German Aerospace Center: elib - DLR electronic library |
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German Aerospace Center: elib - DLR electronic library |
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English |
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Dynamik der Landoberfläche |
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Dynamik der Landoberfläche Baumhoer, Celia Dietz, Andreas Dirscherl, Mariel Künzer, Claudia Two decades of Antarctic coastal-change revealed by satellite imagery and deep learning |
topic_facet |
Dynamik der Landoberfläche |
description |
Antarctica’s coastline is constantly changing by moving glacier and ice shelf fronts. The extent of glaciers and ice shelves influences the ice discharge and sea level contribution of the Antarctic Ice Sheet. Therefore, it is crucial to assess where ice shelf areas with strong buttressing forces are lost. So far, those changes have not been assessed for entire Antarctica within comparable time frames. We present a framework for circum-Antarctic coastline extraction based on a U-Net architecture. Antarctic coastal-change is calculated by using a deep learning derived coastline for the year 2018 in combination with earlier manual derived coastlines of 1997 and 2009. For the first time, this allows to compare circum-Antarctic changes in glacier and ice shelf front position for the last two decades. We found that the Antarctic Ice Sheet area decreased by -29,618±1,193 km2 in extent between 1997-2008 and gained an area of 7,108±1,029km2 between 2009 and 2018. Retreat dominated for the Antarctic Peninsula and West Antarctica and advance for the East Antarctic Ice Sheet over the entire investigation period. The only exception in East Antarctica was Wilkes Land experiencing simultaneous calving front retreat of several glaciers between 2009-2018. Biggest tabular iceberg calving events occurred at Ronne and Ross Ice Shelf within their natural calving cycle between 1997-2008. Future work includes the continuous mapping of Antarctica’s coastal-change on a more frequent temporal scale. |
format |
Conference Object |
author |
Baumhoer, Celia Dietz, Andreas Dirscherl, Mariel Künzer, Claudia |
author_facet |
Baumhoer, Celia Dietz, Andreas Dirscherl, Mariel Künzer, Claudia |
author_sort |
Baumhoer, Celia |
title |
Two decades of Antarctic coastal-change revealed by satellite imagery and deep learning |
title_short |
Two decades of Antarctic coastal-change revealed by satellite imagery and deep learning |
title_full |
Two decades of Antarctic coastal-change revealed by satellite imagery and deep learning |
title_fullStr |
Two decades of Antarctic coastal-change revealed by satellite imagery and deep learning |
title_full_unstemmed |
Two decades of Antarctic coastal-change revealed by satellite imagery and deep learning |
title_sort |
two decades of antarctic coastal-change revealed by satellite imagery and deep learning |
publishDate |
2021 |
url |
https://elib.dlr.de/142260/ https://elib.dlr.de/142260/1/2021-04-23_vEGU2021_Baumhoer.pdf |
genre |
Antarc* Antarctic Antarctic Peninsula Antarctica East Antarctica Ice Sheet Ice Shelf Ice Shelves Iceberg* Ross Ice Shelf West Antarctica Wilkes Land |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Antarctica East Antarctica Ice Sheet Ice Shelf Ice Shelves Iceberg* Ross Ice Shelf West Antarctica Wilkes Land |
op_relation |
https://elib.dlr.de/142260/1/2021-04-23_vEGU2021_Baumhoer.pdf Baumhoer, Celia und Dietz, Andreas und Dirscherl, Mariel und Künzer, Claudia (2021) Two decades of Antarctic coastal-change revealed by satellite imagery and deep learning. vEGU21, 2021-04-19 - 2021-04-30, virtuell. |
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1799477776430923776 |