Ice Aprons in the Mont Blanc Massif (Western European Alps): Topographic Characteristics and Relations with Glaciers and Other Types of Perennial Surface Ice Features
International audience Ice aprons are poorly studied and not well-defined thin ice bodies adhering to high altitude steep rock faces, but are present in most Alpine-type high mountain environments worldwide. This study aims to precisely define ice aprons based on a detailed analysis of their topogra...
Published in: | Remote Sensing |
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Online Access: | https://hal.science/hal-04024633 https://hal.science/hal-04024633/document https://hal.science/hal-04024633/file/2022_Kaushik_remotesensing-14-05557-v3.pdf https://doi.org/10.3390/rs14215557 |
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ftanrparis:oai:HAL:hal-04024633v1 2023-12-17T10:31:31+01:00 Ice Aprons in the Mont Blanc Massif (Western European Alps): Topographic Characteristics and Relations with Glaciers and Other Types of Perennial Surface Ice Features Kaushik, Suvrat Ravanel, Ludovic Magnin, Florence Trouvé, Emmanuel Yan, Yajing Environnements, Dynamiques et Territoires de Montagne (EDYTEM) Université Savoie Mont Blanc (USMB Université de Savoie Université de Chambéry )-Centre National de la Recherche Scientifique (CNRS) ANR-19-CE01-0018,WISPER,Processus thermo-mécaniques liés à l'eau et à la glace dans les fractures des parois alpines à permafrost(2019) 2022-11-03 https://hal.science/hal-04024633 https://hal.science/hal-04024633/document https://hal.science/hal-04024633/file/2022_Kaushik_remotesensing-14-05557-v3.pdf https://doi.org/10.3390/rs14215557 en eng HAL CCSD MDPI info:eu-repo/semantics/altIdentifier/doi/10.3390/rs14215557 hal-04024633 https://hal.science/hal-04024633 https://hal.science/hal-04024633/document https://hal.science/hal-04024633/file/2022_Kaushik_remotesensing-14-05557-v3.pdf doi:10.3390/rs14215557 info:eu-repo/semantics/OpenAccess ISSN: 2072-4292 Remote Sensing https://hal.science/hal-04024633 Remote Sensing, 2022, 14, ⟨10.3390/rs14215557⟩ [SDU]Sciences of the Universe [physics] info:eu-repo/semantics/article Journal articles 2022 ftanrparis https://doi.org/10.3390/rs14215557 2023-11-18T22:28:55Z International audience Ice aprons are poorly studied and not well-defined thin ice bodies adhering to high altitude steep rock faces, but are present in most Alpine-type high mountain environments worldwide. This study aims to precisely define ice aprons based on a detailed analysis of their topographical characteristics in the Mont Blanc massif (western European Alps). For this, we accurately identified and precisely mapped 423 ice aprons using a combination of high-resolution optical satellite images from 2019. To better understand their relationship with other types of glaciers, especially the steep slope glaciers and other surface ice bodies, we built a detailed inventory at the scale of the massif that incorporates nine different types of perennial surface ice bodies. In addition, an analysis using different topographic factors helped us to better understand the preferred locations of the ice aprons. We show that they predominantly occur on west-oriented steep and topographically rugged rock slopes above the local Equilibrium Line Altitude (~3200 m a.s.l.), with concave profile curvatures around them that facilitate snow accumulation. They are also found in areas underlain by permafrost. The extensive inventory also helped us to identify different types of ice aprons based on their relationships with glaciers/ice bodies. The analysis shows that ice aprons existing at the headwall of large glaciers above a bergschrund are the most dominant ice apron type in the study area, with ~82% of the total. Article in Journal/Newspaper Ice permafrost Portail HAL-ANR (Agence Nationale de la Recherche) Mont Blanc ENVELOPE(69.468,69.468,-49.461,-49.461) Remote Sensing 14 21 5557 |
institution |
Open Polar |
collection |
Portail HAL-ANR (Agence Nationale de la Recherche) |
op_collection_id |
ftanrparis |
language |
English |
topic |
[SDU]Sciences of the Universe [physics] |
spellingShingle |
[SDU]Sciences of the Universe [physics] Kaushik, Suvrat Ravanel, Ludovic Magnin, Florence Trouvé, Emmanuel Yan, Yajing Ice Aprons in the Mont Blanc Massif (Western European Alps): Topographic Characteristics and Relations with Glaciers and Other Types of Perennial Surface Ice Features |
topic_facet |
[SDU]Sciences of the Universe [physics] |
description |
International audience Ice aprons are poorly studied and not well-defined thin ice bodies adhering to high altitude steep rock faces, but are present in most Alpine-type high mountain environments worldwide. This study aims to precisely define ice aprons based on a detailed analysis of their topographical characteristics in the Mont Blanc massif (western European Alps). For this, we accurately identified and precisely mapped 423 ice aprons using a combination of high-resolution optical satellite images from 2019. To better understand their relationship with other types of glaciers, especially the steep slope glaciers and other surface ice bodies, we built a detailed inventory at the scale of the massif that incorporates nine different types of perennial surface ice bodies. In addition, an analysis using different topographic factors helped us to better understand the preferred locations of the ice aprons. We show that they predominantly occur on west-oriented steep and topographically rugged rock slopes above the local Equilibrium Line Altitude (~3200 m a.s.l.), with concave profile curvatures around them that facilitate snow accumulation. They are also found in areas underlain by permafrost. The extensive inventory also helped us to identify different types of ice aprons based on their relationships with glaciers/ice bodies. The analysis shows that ice aprons existing at the headwall of large glaciers above a bergschrund are the most dominant ice apron type in the study area, with ~82% of the total. |
author2 |
Environnements, Dynamiques et Territoires de Montagne (EDYTEM) Université Savoie Mont Blanc (USMB Université de Savoie Université de Chambéry )-Centre National de la Recherche Scientifique (CNRS) ANR-19-CE01-0018,WISPER,Processus thermo-mécaniques liés à l'eau et à la glace dans les fractures des parois alpines à permafrost(2019) |
format |
Article in Journal/Newspaper |
author |
Kaushik, Suvrat Ravanel, Ludovic Magnin, Florence Trouvé, Emmanuel Yan, Yajing |
author_facet |
Kaushik, Suvrat Ravanel, Ludovic Magnin, Florence Trouvé, Emmanuel Yan, Yajing |
author_sort |
Kaushik, Suvrat |
title |
Ice Aprons in the Mont Blanc Massif (Western European Alps): Topographic Characteristics and Relations with Glaciers and Other Types of Perennial Surface Ice Features |
title_short |
Ice Aprons in the Mont Blanc Massif (Western European Alps): Topographic Characteristics and Relations with Glaciers and Other Types of Perennial Surface Ice Features |
title_full |
Ice Aprons in the Mont Blanc Massif (Western European Alps): Topographic Characteristics and Relations with Glaciers and Other Types of Perennial Surface Ice Features |
title_fullStr |
Ice Aprons in the Mont Blanc Massif (Western European Alps): Topographic Characteristics and Relations with Glaciers and Other Types of Perennial Surface Ice Features |
title_full_unstemmed |
Ice Aprons in the Mont Blanc Massif (Western European Alps): Topographic Characteristics and Relations with Glaciers and Other Types of Perennial Surface Ice Features |
title_sort |
ice aprons in the mont blanc massif (western european alps): topographic characteristics and relations with glaciers and other types of perennial surface ice features |
publisher |
HAL CCSD |
publishDate |
2022 |
url |
https://hal.science/hal-04024633 https://hal.science/hal-04024633/document https://hal.science/hal-04024633/file/2022_Kaushik_remotesensing-14-05557-v3.pdf https://doi.org/10.3390/rs14215557 |
long_lat |
ENVELOPE(69.468,69.468,-49.461,-49.461) |
geographic |
Mont Blanc |
geographic_facet |
Mont Blanc |
genre |
Ice permafrost |
genre_facet |
Ice permafrost |
op_source |
ISSN: 2072-4292 Remote Sensing https://hal.science/hal-04024633 Remote Sensing, 2022, 14, ⟨10.3390/rs14215557⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.3390/rs14215557 hal-04024633 https://hal.science/hal-04024633 https://hal.science/hal-04024633/document https://hal.science/hal-04024633/file/2022_Kaushik_remotesensing-14-05557-v3.pdf doi:10.3390/rs14215557 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.3390/rs14215557 |
container_title |
Remote Sensing |
container_volume |
14 |
container_issue |
21 |
container_start_page |
5557 |
_version_ |
1785584849379131392 |