Glacier, permafrost and thermokarst interactions in Alpine terrain: Insights from seven decades of reconstructed dynamics of the Chauvet glacial and periglacial system (Southern French Alps)
International audience This study analyses the long‐term dynamics in the Chauvet glacial and periglacial system (southern French Alps) over seven decades (1948–2020), where several lake outburst floods have been documented since 1930. To accurately describe and explain the complex dynamics of this s...
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ftunigrenoble:oai:HAL:hal-04262024v2 2024-05-19T07:41:53+00:00 Glacier, permafrost and thermokarst interactions in Alpine terrain: Insights from seven decades of reconstructed dynamics of the Chauvet glacial and periglacial system (Southern French Alps) Cusicanqui, Diego Bodin, Xavier Duvillard, Pierre‐allain Schoeneich, Philippe Revil, André Assier, Alain Berthet, Johan Peyron, Michel Roudnitska, Stéphane Rabatel, Antoine 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 des Géosciences de l’Environnement (IGE) Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Université Grenoble Alpes (UGA)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP ) Université Grenoble Alpes (UGA) Pacte, Laboratoire de sciences sociales (PACTE) Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA)-Sciences Po Grenoble - Institut d'études politiques de Grenoble (IEPG) Office national des forêts (ONF) 2023-07-25 https://hal.science/hal-04262024 https://hal.science/hal-04262024v2/document https://hal.science/hal-04262024v2/file/2023-ESPL-Glacier%20Chauvet2.pdf https://doi.org/10.1002/esp.5650 en eng HAL CCSD Wiley info:eu-repo/semantics/altIdentifier/doi/10.1002/esp.5650 hal-04262024 https://hal.science/hal-04262024 https://hal.science/hal-04262024v2/document https://hal.science/hal-04262024v2/file/2023-ESPL-Glacier%20Chauvet2.pdf doi:10.1002/esp.5650 info:eu-repo/semantics/OpenAccess ISSN: 0197-9337 EISSN: 1096-9837 Earth Surface Processes and Landforms https://hal.science/hal-04262024 Earth Surface Processes and Landforms, 2023, 48 (13), pp.2595-2612. ⟨10.1002/esp.5650⟩ [SDU]Sciences of the Universe [physics] info:eu-repo/semantics/article Journal articles 2023 ftunigrenoble https://doi.org/10.1002/esp.5650 2024-05-02T00:22:41Z International audience This study analyses the long‐term dynamics in the Chauvet glacial and periglacial system (southern French Alps) over seven decades (1948–2020), where several lake outburst floods have been documented since 1930. To accurately describe and explain the complex dynamics of this site, our multidisciplinary approach combines (1) photogrammetry of historical aerial photographs and modern high‐resolution satellite and UAV images, (2) geophysical surveys and (3) geomorphological mapping. We provide evidence for spatial and functional interactions between glacial and periglacial features, especially in the lower sector where different landforms with variable ice‐ and debris‐content and specific dynamics are interplayed. We found the highest thinning rates on ice‐rich terrain located in the central part of the valley bottom, which, together with bedrock morphology, most probably determine the location of the thermokarst. We also documented an overall acceleration of the creeping of the landforms after the 2000s, with a flow direction largely oriented towards the thermokarst depression. The outburst water flowed through a conduit whose successive opening and closure seem to mainly depend on the rate of lateral convergence of left‐ and right‐hand landforms and on the rate of ice melting (and roof collapse) along the conduit walls. Today, the site of Chauvet still represents a potential hazard for the region due to the large water storage capacity (up to 180 000 ± 450 m 3 ) and the development of a predominantly bucket shape in the thermokarst sector. Article in Journal/Newspaper Ice permafrost Thermokarst Université Grenoble Alpes: HAL Earth Surface Processes and Landforms 48 13 2595 2612 |
institution |
Open Polar |
collection |
Université Grenoble Alpes: HAL |
op_collection_id |
ftunigrenoble |
language |
English |
topic |
[SDU]Sciences of the Universe [physics] |
spellingShingle |
[SDU]Sciences of the Universe [physics] Cusicanqui, Diego Bodin, Xavier Duvillard, Pierre‐allain Schoeneich, Philippe Revil, André Assier, Alain Berthet, Johan Peyron, Michel Roudnitska, Stéphane Rabatel, Antoine Glacier, permafrost and thermokarst interactions in Alpine terrain: Insights from seven decades of reconstructed dynamics of the Chauvet glacial and periglacial system (Southern French Alps) |
topic_facet |
[SDU]Sciences of the Universe [physics] |
description |
International audience This study analyses the long‐term dynamics in the Chauvet glacial and periglacial system (southern French Alps) over seven decades (1948–2020), where several lake outburst floods have been documented since 1930. To accurately describe and explain the complex dynamics of this site, our multidisciplinary approach combines (1) photogrammetry of historical aerial photographs and modern high‐resolution satellite and UAV images, (2) geophysical surveys and (3) geomorphological mapping. We provide evidence for spatial and functional interactions between glacial and periglacial features, especially in the lower sector where different landforms with variable ice‐ and debris‐content and specific dynamics are interplayed. We found the highest thinning rates on ice‐rich terrain located in the central part of the valley bottom, which, together with bedrock morphology, most probably determine the location of the thermokarst. We also documented an overall acceleration of the creeping of the landforms after the 2000s, with a flow direction largely oriented towards the thermokarst depression. The outburst water flowed through a conduit whose successive opening and closure seem to mainly depend on the rate of lateral convergence of left‐ and right‐hand landforms and on the rate of ice melting (and roof collapse) along the conduit walls. Today, the site of Chauvet still represents a potential hazard for the region due to the large water storage capacity (up to 180 000 ± 450 m 3 ) and the development of a predominantly bucket shape in the thermokarst sector. |
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 des Géosciences de l’Environnement (IGE) Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Université Grenoble Alpes (UGA)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP ) Université Grenoble Alpes (UGA) Pacte, Laboratoire de sciences sociales (PACTE) Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA)-Sciences Po Grenoble - Institut d'études politiques de Grenoble (IEPG) Office national des forêts (ONF) |
format |
Article in Journal/Newspaper |
author |
Cusicanqui, Diego Bodin, Xavier Duvillard, Pierre‐allain Schoeneich, Philippe Revil, André Assier, Alain Berthet, Johan Peyron, Michel Roudnitska, Stéphane Rabatel, Antoine |
author_facet |
Cusicanqui, Diego Bodin, Xavier Duvillard, Pierre‐allain Schoeneich, Philippe Revil, André Assier, Alain Berthet, Johan Peyron, Michel Roudnitska, Stéphane Rabatel, Antoine |
author_sort |
Cusicanqui, Diego |
title |
Glacier, permafrost and thermokarst interactions in Alpine terrain: Insights from seven decades of reconstructed dynamics of the Chauvet glacial and periglacial system (Southern French Alps) |
title_short |
Glacier, permafrost and thermokarst interactions in Alpine terrain: Insights from seven decades of reconstructed dynamics of the Chauvet glacial and periglacial system (Southern French Alps) |
title_full |
Glacier, permafrost and thermokarst interactions in Alpine terrain: Insights from seven decades of reconstructed dynamics of the Chauvet glacial and periglacial system (Southern French Alps) |
title_fullStr |
Glacier, permafrost and thermokarst interactions in Alpine terrain: Insights from seven decades of reconstructed dynamics of the Chauvet glacial and periglacial system (Southern French Alps) |
title_full_unstemmed |
Glacier, permafrost and thermokarst interactions in Alpine terrain: Insights from seven decades of reconstructed dynamics of the Chauvet glacial and periglacial system (Southern French Alps) |
title_sort |
glacier, permafrost and thermokarst interactions in alpine terrain: insights from seven decades of reconstructed dynamics of the chauvet glacial and periglacial system (southern french alps) |
publisher |
HAL CCSD |
publishDate |
2023 |
url |
https://hal.science/hal-04262024 https://hal.science/hal-04262024v2/document https://hal.science/hal-04262024v2/file/2023-ESPL-Glacier%20Chauvet2.pdf https://doi.org/10.1002/esp.5650 |
genre |
Ice permafrost Thermokarst |
genre_facet |
Ice permafrost Thermokarst |
op_source |
ISSN: 0197-9337 EISSN: 1096-9837 Earth Surface Processes and Landforms https://hal.science/hal-04262024 Earth Surface Processes and Landforms, 2023, 48 (13), pp.2595-2612. ⟨10.1002/esp.5650⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1002/esp.5650 hal-04262024 https://hal.science/hal-04262024 https://hal.science/hal-04262024v2/document https://hal.science/hal-04262024v2/file/2023-ESPL-Glacier%20Chauvet2.pdf doi:10.1002/esp.5650 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1002/esp.5650 |
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Earth Surface Processes and Landforms |
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48 |
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13 |
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2595 |
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2612 |
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1799481500699197440 |