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)
Abstract 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 multi...
Published in: | Earth Surface Processes and Landforms |
---|---|
Main Authors: | , , , , , , , , , |
Other Authors: | , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Wiley
2023
|
Subjects: | |
Online Access: | http://dx.doi.org/10.1002/esp.5650 https://onlinelibrary.wiley.com/doi/pdf/10.1002/esp.5650 |
id |
crwiley:10.1002/esp.5650 |
---|---|
record_format |
openpolar |
spelling |
crwiley:10.1002/esp.5650 2024-06-02T08:08:02+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 Agence Nationale de la Recherche European Regional Development Fund 2023 http://dx.doi.org/10.1002/esp.5650 https://onlinelibrary.wiley.com/doi/pdf/10.1002/esp.5650 en eng Wiley http://creativecommons.org/licenses/by/4.0/ Earth Surface Processes and Landforms volume 48, issue 13, page 2595-2612 ISSN 0197-9337 1096-9837 journal-article 2023 crwiley https://doi.org/10.1002/esp.5650 2024-05-03T11:44:27Z Abstract 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 Wiley Online Library Earth Surface Processes and Landforms 48 13 2595 2612 |
institution |
Open Polar |
collection |
Wiley Online Library |
op_collection_id |
crwiley |
language |
English |
description |
Abstract 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 |
Agence Nationale de la Recherche European Regional Development Fund |
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 |
spellingShingle |
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) |
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 |
Wiley |
publishDate |
2023 |
url |
http://dx.doi.org/10.1002/esp.5650 https://onlinelibrary.wiley.com/doi/pdf/10.1002/esp.5650 |
genre |
Ice permafrost Thermokarst |
genre_facet |
Ice permafrost Thermokarst |
op_source |
Earth Surface Processes and Landforms volume 48, issue 13, page 2595-2612 ISSN 0197-9337 1096-9837 |
op_rights |
http://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.1002/esp.5650 |
container_title |
Earth Surface Processes and Landforms |
container_volume |
48 |
container_issue |
13 |
container_start_page |
2595 |
op_container_end_page |
2612 |
_version_ |
1800753198170898432 |