The morphodynamics of the mont blanc massif in a changing cryosphere: a comprehensive review
International audience One of the most glacierized areas in the European Alps, the Mont Blanc massif, illustrates how fast changes affect the cryosphere and the related morphodynamics in high mountain environments, especially since the termination of the Little Ice Age. Contrasts between the north-w...
Published in: | Geografiska Annaler: Series A, Physical Geography |
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Online Access: | https://hal.science/halsde-00757235 https://doi.org/10.1111/j.1468-0459.2012.00467.x |
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ftunivsavoie:oai:HAL:halsde-00757235v1 2024-04-28T08:23:36+00:00 The morphodynamics of the mont blanc massif in a changing cryosphere: a comprehensive review Deline, Philip Gardent, Marie Magnin, Florence Ravanel, Ludovic 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) Institut de Géographie Lausanne (IGUL) Université de Lausanne = University of Lausanne (UNIL) 2012 https://hal.science/halsde-00757235 https://doi.org/10.1111/j.1468-0459.2012.00467.x en eng HAL CCSD Wiley info:eu-repo/semantics/altIdentifier/doi/10.1111/j.1468-0459.2012.00467.x halsde-00757235 https://hal.science/halsde-00757235 doi:10.1111/j.1468-0459.2012.00467.x ISSN: 0435-3676 EISSN: 1468-0459 Geografiska Annaler: Series A, Physical Geography https://hal.science/halsde-00757235 Geografiska Annaler: Series A, Physical Geography, 2012, 94A (2), pp.265-283. ⟨10.1111/j.1468-0459.2012.00467.x⟩ cryosphere glacier debris-covered glacier permafrost rock glacier rockfall rock avalanche glacial outburst flood ice avalanche climate change hazards Mont Blanc massif Alps info:eu-repo/semantics/article Journal articles 2012 ftunivsavoie https://doi.org/10.1111/j.1468-0459.2012.00467.x 2024-04-11T00:14:29Z International audience One of the most glacierized areas in the European Alps, the Mont Blanc massif, illustrates how fast changes affect the cryosphere and the related morphodynamics in high mountain environments, especially since the termination of the Little Ice Age. Contrasts between the north-west side, gentle and heavily glaciated, and the south-east side, steep and rocky, and between local faces with varying slope angle and aspect highlight the suitability of the study site for scientific investigations. Glacier shrinkage is pronounced at low elevation but weaker than in other Alpine massifs, and supraglacial debris covers have developed over most of the glaciers, often starting in the nineteenth century. Lowering of glacier surface also affects areas of the accumulation zone. While modern glaciology has been carried out in the massif for several decades, study of the permafrost has been under development for only a few years, especially in the rock walls. Many hazards are related to glacier dynamics. Outburst flood from englacial pockets, ice avalanche from warm-based and cold-based glaciers, and rock slope failure due to debuttressing are generally increasing with the current decrease or even the vanishing of glaciers. Permafrost degradation is likely involved in rockfall and rock avalanche, contributing to the chains of processes resulting from the high relief of the massif. The resulting hazards could increasingly endanger population and activities of the valleys surrounding the Mont Blanc massif. Article in Journal/Newspaper Ice permafrost Université Savoie Mont Blanc: HAL Geografiska Annaler: Series A, Physical Geography 94 2 265 283 |
institution |
Open Polar |
collection |
Université Savoie Mont Blanc: HAL |
op_collection_id |
ftunivsavoie |
language |
English |
topic |
cryosphere glacier debris-covered glacier permafrost rock glacier rockfall rock avalanche glacial outburst flood ice avalanche climate change hazards Mont Blanc massif Alps |
spellingShingle |
cryosphere glacier debris-covered glacier permafrost rock glacier rockfall rock avalanche glacial outburst flood ice avalanche climate change hazards Mont Blanc massif Alps Deline, Philip Gardent, Marie Magnin, Florence Ravanel, Ludovic The morphodynamics of the mont blanc massif in a changing cryosphere: a comprehensive review |
topic_facet |
cryosphere glacier debris-covered glacier permafrost rock glacier rockfall rock avalanche glacial outburst flood ice avalanche climate change hazards Mont Blanc massif Alps |
description |
International audience One of the most glacierized areas in the European Alps, the Mont Blanc massif, illustrates how fast changes affect the cryosphere and the related morphodynamics in high mountain environments, especially since the termination of the Little Ice Age. Contrasts between the north-west side, gentle and heavily glaciated, and the south-east side, steep and rocky, and between local faces with varying slope angle and aspect highlight the suitability of the study site for scientific investigations. Glacier shrinkage is pronounced at low elevation but weaker than in other Alpine massifs, and supraglacial debris covers have developed over most of the glaciers, often starting in the nineteenth century. Lowering of glacier surface also affects areas of the accumulation zone. While modern glaciology has been carried out in the massif for several decades, study of the permafrost has been under development for only a few years, especially in the rock walls. Many hazards are related to glacier dynamics. Outburst flood from englacial pockets, ice avalanche from warm-based and cold-based glaciers, and rock slope failure due to debuttressing are generally increasing with the current decrease or even the vanishing of glaciers. Permafrost degradation is likely involved in rockfall and rock avalanche, contributing to the chains of processes resulting from the high relief of the massif. The resulting hazards could increasingly endanger population and activities of the valleys surrounding the Mont Blanc massif. |
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) Institut de Géographie Lausanne (IGUL) Université de Lausanne = University of Lausanne (UNIL) |
format |
Article in Journal/Newspaper |
author |
Deline, Philip Gardent, Marie Magnin, Florence Ravanel, Ludovic |
author_facet |
Deline, Philip Gardent, Marie Magnin, Florence Ravanel, Ludovic |
author_sort |
Deline, Philip |
title |
The morphodynamics of the mont blanc massif in a changing cryosphere: a comprehensive review |
title_short |
The morphodynamics of the mont blanc massif in a changing cryosphere: a comprehensive review |
title_full |
The morphodynamics of the mont blanc massif in a changing cryosphere: a comprehensive review |
title_fullStr |
The morphodynamics of the mont blanc massif in a changing cryosphere: a comprehensive review |
title_full_unstemmed |
The morphodynamics of the mont blanc massif in a changing cryosphere: a comprehensive review |
title_sort |
morphodynamics of the mont blanc massif in a changing cryosphere: a comprehensive review |
publisher |
HAL CCSD |
publishDate |
2012 |
url |
https://hal.science/halsde-00757235 https://doi.org/10.1111/j.1468-0459.2012.00467.x |
genre |
Ice permafrost |
genre_facet |
Ice permafrost |
op_source |
ISSN: 0435-3676 EISSN: 1468-0459 Geografiska Annaler: Series A, Physical Geography https://hal.science/halsde-00757235 Geografiska Annaler: Series A, Physical Geography, 2012, 94A (2), pp.265-283. ⟨10.1111/j.1468-0459.2012.00467.x⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1111/j.1468-0459.2012.00467.x halsde-00757235 https://hal.science/halsde-00757235 doi:10.1111/j.1468-0459.2012.00467.x |
op_doi |
https://doi.org/10.1111/j.1468-0459.2012.00467.x |
container_title |
Geografiska Annaler: Series A, Physical Geography |
container_volume |
94 |
container_issue |
2 |
container_start_page |
265 |
op_container_end_page |
283 |
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1797584449100054528 |