Linear snow dunes orientation in Antarctica ...
<!--!introduction!--> The wide range of wind regimes in Antarctica interacts with the snow surface topography and shapes various snow bedforms, such as linear dunes or barchans. They are representative of the local scale processes of accumulation and erosion, and thus adapt to the change in sn...
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GFZ German Research Centre for Geosciences
2023
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ftdatacite:10.57757/iugg23-0016 2023-06-11T04:07:13+02:00 Linear snow dunes orientation in Antarctica ... Poizat, Marine Picard, Ghislain Arnaud, Laurent Narteau, Clément Amory, Charles 2023 https://dx.doi.org/10.57757/iugg23-0016 https://gfzpublic.gfz-potsdam.de/pubman/item/item_5017063 unknown GFZ German Research Centre for Geosciences Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 ConferencePaper Oral Article 2023 ftdatacite https://doi.org/10.57757/iugg23-0016 2023-06-01T11:29:54Z <!--!introduction!--> The wide range of wind regimes in Antarctica interacts with the snow surface topography and shapes various snow bedforms, such as linear dunes or barchans. They are representative of the local scale processes of accumulation and erosion, and thus adapt to the change in snow structure, metamorphism, snow precipitation, and redistribution. Understanding these interactions is important to better constrain the surface mass balance, interpretation of ice core, and modelling of the near-surface wind field in Antarctica. While the wide variety of snow bedforms encountered at the Antarctic surface have been qualitatively described, little is known about their spatial distribution. In this study, we present a continent-wide study of linear dunes orientation in Antarctica in relation to wind regimes. We used Sentinel-2 and Landsat-8 images with, respectively, a 10 m and 15 m resolution to retrieve dune orientation. Using wind direction and speed from ERA5 Reanalysis with a 0.25°x0.25° ... : The 28th IUGG General Assembly (IUGG2023) (Berlin 2023) ... Conference Object Antarc* Antarctic Antarctica ice core Barchans DataCite Metadata Store (German National Library of Science and Technology) Antarctic Barchans ENVELOPE(-64.333,-64.333,-65.233,-65.233) The Antarctic |
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<!--!introduction!--> The wide range of wind regimes in Antarctica interacts with the snow surface topography and shapes various snow bedforms, such as linear dunes or barchans. They are representative of the local scale processes of accumulation and erosion, and thus adapt to the change in snow structure, metamorphism, snow precipitation, and redistribution. Understanding these interactions is important to better constrain the surface mass balance, interpretation of ice core, and modelling of the near-surface wind field in Antarctica. While the wide variety of snow bedforms encountered at the Antarctic surface have been qualitatively described, little is known about their spatial distribution. In this study, we present a continent-wide study of linear dunes orientation in Antarctica in relation to wind regimes. We used Sentinel-2 and Landsat-8 images with, respectively, a 10 m and 15 m resolution to retrieve dune orientation. Using wind direction and speed from ERA5 Reanalysis with a 0.25°x0.25° ... : The 28th IUGG General Assembly (IUGG2023) (Berlin 2023) ... |
format |
Conference Object |
author |
Poizat, Marine Picard, Ghislain Arnaud, Laurent Narteau, Clément Amory, Charles |
spellingShingle |
Poizat, Marine Picard, Ghislain Arnaud, Laurent Narteau, Clément Amory, Charles Linear snow dunes orientation in Antarctica ... |
author_facet |
Poizat, Marine Picard, Ghislain Arnaud, Laurent Narteau, Clément Amory, Charles |
author_sort |
Poizat, Marine |
title |
Linear snow dunes orientation in Antarctica ... |
title_short |
Linear snow dunes orientation in Antarctica ... |
title_full |
Linear snow dunes orientation in Antarctica ... |
title_fullStr |
Linear snow dunes orientation in Antarctica ... |
title_full_unstemmed |
Linear snow dunes orientation in Antarctica ... |
title_sort |
linear snow dunes orientation in antarctica ... |
publisher |
GFZ German Research Centre for Geosciences |
publishDate |
2023 |
url |
https://dx.doi.org/10.57757/iugg23-0016 https://gfzpublic.gfz-potsdam.de/pubman/item/item_5017063 |
long_lat |
ENVELOPE(-64.333,-64.333,-65.233,-65.233) |
geographic |
Antarctic Barchans The Antarctic |
geographic_facet |
Antarctic Barchans The Antarctic |
genre |
Antarc* Antarctic Antarctica ice core Barchans |
genre_facet |
Antarc* Antarctic Antarctica ice core Barchans |
op_rights |
Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 |
op_doi |
https://doi.org/10.57757/iugg23-0016 |
_version_ |
1768380131828563968 |