Is a glacier gone when it looks gone? Subsurface characteristics of high‐Arctic ice‐cored slopes as evidence of the latest maximum glacier extent
Abstract In the context of glacier retreat and increased precipitations, Arctic glacier basin slopes are subject to stress leading to visible transformations. In this work, subsurface features of a small Arctic glacier basin slopes are mapped using ground‐penetrating RADAR. In combination with surfa...
Published in: | Earth Surface Processes and Landforms |
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Online Access: | http://dx.doi.org/10.1002/esp.5894 https://onlinelibrary.wiley.com/doi/pdf/10.1002/esp.5894 |
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crwiley:10.1002/esp.5894 2024-06-23T07:49:46+00:00 Is a glacier gone when it looks gone? Subsurface characteristics of high‐Arctic ice‐cored slopes as evidence of the latest maximum glacier extent Bernard, Eric Friedt, Jean‐Michel Prokop, Alexander Tolle, Florian Griselin, Madeleine Institut Polaire Français Paul Emile Victor 2024 http://dx.doi.org/10.1002/esp.5894 https://onlinelibrary.wiley.com/doi/pdf/10.1002/esp.5894 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Earth Surface Processes and Landforms ISSN 0197-9337 1096-9837 journal-article 2024 crwiley https://doi.org/10.1002/esp.5894 2024-06-11T04:42:30Z Abstract In the context of glacier retreat and increased precipitations, Arctic glacier basin slopes are subject to stress leading to visible transformations. In this work, subsurface features of a small Arctic glacier basin slopes are mapped using ground‐penetrating RADAR. In combination with surface topography data, eight transects were surveyed ranging from the areas furthest from the current glacier extent to the areas still in contact with the glacier. This allowed for a reconstitution of the successive stages ice‐cored slopes go through when glaciers retreat. It appears that slopes evolve from thick debris‐covered ice bodies connected with the glacier, to residual ice and ice/debris mixes covered in debris. At the same time, surface morphology of the slopes shifts from homogeneous ice‐cored slope gradients to more complex talus‐type slopes at the end of the process. The stages of these evolutions are in compliance with former glacier extents. The main driving factors of the slopes successive stages are the constant slope adjustments linked to debris movements, and the melting of ice cores. All these factors are exacerbated by the warmer and wetter conditions they are subject to. Article in Journal/Newspaper Arctic Wiley Online Library Arctic Earth Surface Processes and Landforms |
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Open Polar |
collection |
Wiley Online Library |
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crwiley |
language |
English |
description |
Abstract In the context of glacier retreat and increased precipitations, Arctic glacier basin slopes are subject to stress leading to visible transformations. In this work, subsurface features of a small Arctic glacier basin slopes are mapped using ground‐penetrating RADAR. In combination with surface topography data, eight transects were surveyed ranging from the areas furthest from the current glacier extent to the areas still in contact with the glacier. This allowed for a reconstitution of the successive stages ice‐cored slopes go through when glaciers retreat. It appears that slopes evolve from thick debris‐covered ice bodies connected with the glacier, to residual ice and ice/debris mixes covered in debris. At the same time, surface morphology of the slopes shifts from homogeneous ice‐cored slope gradients to more complex talus‐type slopes at the end of the process. The stages of these evolutions are in compliance with former glacier extents. The main driving factors of the slopes successive stages are the constant slope adjustments linked to debris movements, and the melting of ice cores. All these factors are exacerbated by the warmer and wetter conditions they are subject to. |
author2 |
Institut Polaire Français Paul Emile Victor |
format |
Article in Journal/Newspaper |
author |
Bernard, Eric Friedt, Jean‐Michel Prokop, Alexander Tolle, Florian Griselin, Madeleine |
spellingShingle |
Bernard, Eric Friedt, Jean‐Michel Prokop, Alexander Tolle, Florian Griselin, Madeleine Is a glacier gone when it looks gone? Subsurface characteristics of high‐Arctic ice‐cored slopes as evidence of the latest maximum glacier extent |
author_facet |
Bernard, Eric Friedt, Jean‐Michel Prokop, Alexander Tolle, Florian Griselin, Madeleine |
author_sort |
Bernard, Eric |
title |
Is a glacier gone when it looks gone? Subsurface characteristics of high‐Arctic ice‐cored slopes as evidence of the latest maximum glacier extent |
title_short |
Is a glacier gone when it looks gone? Subsurface characteristics of high‐Arctic ice‐cored slopes as evidence of the latest maximum glacier extent |
title_full |
Is a glacier gone when it looks gone? Subsurface characteristics of high‐Arctic ice‐cored slopes as evidence of the latest maximum glacier extent |
title_fullStr |
Is a glacier gone when it looks gone? Subsurface characteristics of high‐Arctic ice‐cored slopes as evidence of the latest maximum glacier extent |
title_full_unstemmed |
Is a glacier gone when it looks gone? Subsurface characteristics of high‐Arctic ice‐cored slopes as evidence of the latest maximum glacier extent |
title_sort |
is a glacier gone when it looks gone? subsurface characteristics of high‐arctic ice‐cored slopes as evidence of the latest maximum glacier extent |
publisher |
Wiley |
publishDate |
2024 |
url |
http://dx.doi.org/10.1002/esp.5894 https://onlinelibrary.wiley.com/doi/pdf/10.1002/esp.5894 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic |
genre_facet |
Arctic |
op_source |
Earth Surface Processes and Landforms ISSN 0197-9337 1096-9837 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1002/esp.5894 |
container_title |
Earth Surface Processes and Landforms |
_version_ |
1802640439498506240 |