Permafrost controls the displacement rates of large unstable rock-slopes in subarctic environments
International audience Determining the link between permafrost and the displacement rates of large unstable rock-slopes (LURSs) is fundamental for understanding future hazard scenarios and establishing appropriate management strategies. From an inventory of >500 LURSs in Norway, we investigate th...
Published in: | Global and Planetary Change |
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Online Access: | https://hal.science/hal-03942667 https://doi.org/10.1016/j.gloplacha.2022.104017 |
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ftunivnantes:oai:HAL:hal-03942667v1 2023-05-15T16:36:49+02:00 Permafrost controls the displacement rates of large unstable rock-slopes in subarctic environments Penna, I.M. Magnin, Florence Nicolet, P. Etzelmüller, B. Hermanns, R.L. Böhme, M. Kristensen, L. Nöel, F. Bredal, M. Dehls, J.F. Environnements, Dynamiques et Territoires de la Montagne (EDYTEM) Université Savoie Mont Blanc (USMB Université de Savoie Université de Chambéry )-Centre National de la Recherche Scientifique (CNRS) 2023-01 https://hal.science/hal-03942667 https://doi.org/10.1016/j.gloplacha.2022.104017 en eng HAL CCSD Elsevier info:eu-repo/semantics/altIdentifier/doi/10.1016/j.gloplacha.2022.104017 hal-03942667 https://hal.science/hal-03942667 doi:10.1016/j.gloplacha.2022.104017 ISSN: 0921-8181 Global and Planetary Change https://hal.science/hal-03942667 Global and Planetary Change, 2023, 220, pp.104017. ⟨10.1016/j.gloplacha.2022.104017⟩ [SDE]Environmental Sciences info:eu-repo/semantics/article Journal articles 2023 ftunivnantes https://doi.org/10.1016/j.gloplacha.2022.104017 2023-01-24T23:57:04Z International audience Determining the link between permafrost and the displacement rates of large unstable rock-slopes (LURSs) is fundamental for understanding future hazard scenarios and establishing appropriate management strategies. From an inventory of >500 LURSs in Norway, we investigate the controls of those with available information on their displacement rates (299 LURSs), presenting the first statistical evidence of permafrost as the main driver of displacement rates of LURSs. The probability for a LURS to displace if permafrost is present now or was during the Little Ice Age (LIA) is around 2.1 times higher than if permafrost was already absent during the LIA. This probability is 1.5 times higher for LURSs with current permafrost than for LURSs with permafrost during the LIA that has since melted. Therefore, our findings enrich the classical conception that warming of permafrost increases displacement rates of LURSs, by showing that the complete thawing of permafrost can result in a decrease in displacement rate or even a complete halt of displacement. Article in Journal/Newspaper Ice permafrost Subarctic Université de Nantes: HAL-UNIV-NANTES Norway Global and Planetary Change 220 104017 |
institution |
Open Polar |
collection |
Université de Nantes: HAL-UNIV-NANTES |
op_collection_id |
ftunivnantes |
language |
English |
topic |
[SDE]Environmental Sciences |
spellingShingle |
[SDE]Environmental Sciences Penna, I.M. Magnin, Florence Nicolet, P. Etzelmüller, B. Hermanns, R.L. Böhme, M. Kristensen, L. Nöel, F. Bredal, M. Dehls, J.F. Permafrost controls the displacement rates of large unstable rock-slopes in subarctic environments |
topic_facet |
[SDE]Environmental Sciences |
description |
International audience Determining the link between permafrost and the displacement rates of large unstable rock-slopes (LURSs) is fundamental for understanding future hazard scenarios and establishing appropriate management strategies. From an inventory of >500 LURSs in Norway, we investigate the controls of those with available information on their displacement rates (299 LURSs), presenting the first statistical evidence of permafrost as the main driver of displacement rates of LURSs. The probability for a LURS to displace if permafrost is present now or was during the Little Ice Age (LIA) is around 2.1 times higher than if permafrost was already absent during the LIA. This probability is 1.5 times higher for LURSs with current permafrost than for LURSs with permafrost during the LIA that has since melted. Therefore, our findings enrich the classical conception that warming of permafrost increases displacement rates of LURSs, by showing that the complete thawing of permafrost can result in a decrease in displacement rate or even a complete halt of displacement. |
author2 |
Environnements, Dynamiques et Territoires de la Montagne (EDYTEM) Université Savoie Mont Blanc (USMB Université de Savoie Université de Chambéry )-Centre National de la Recherche Scientifique (CNRS) |
format |
Article in Journal/Newspaper |
author |
Penna, I.M. Magnin, Florence Nicolet, P. Etzelmüller, B. Hermanns, R.L. Böhme, M. Kristensen, L. Nöel, F. Bredal, M. Dehls, J.F. |
author_facet |
Penna, I.M. Magnin, Florence Nicolet, P. Etzelmüller, B. Hermanns, R.L. Böhme, M. Kristensen, L. Nöel, F. Bredal, M. Dehls, J.F. |
author_sort |
Penna, I.M. |
title |
Permafrost controls the displacement rates of large unstable rock-slopes in subarctic environments |
title_short |
Permafrost controls the displacement rates of large unstable rock-slopes in subarctic environments |
title_full |
Permafrost controls the displacement rates of large unstable rock-slopes in subarctic environments |
title_fullStr |
Permafrost controls the displacement rates of large unstable rock-slopes in subarctic environments |
title_full_unstemmed |
Permafrost controls the displacement rates of large unstable rock-slopes in subarctic environments |
title_sort |
permafrost controls the displacement rates of large unstable rock-slopes in subarctic environments |
publisher |
HAL CCSD |
publishDate |
2023 |
url |
https://hal.science/hal-03942667 https://doi.org/10.1016/j.gloplacha.2022.104017 |
geographic |
Norway |
geographic_facet |
Norway |
genre |
Ice permafrost Subarctic |
genre_facet |
Ice permafrost Subarctic |
op_source |
ISSN: 0921-8181 Global and Planetary Change https://hal.science/hal-03942667 Global and Planetary Change, 2023, 220, pp.104017. ⟨10.1016/j.gloplacha.2022.104017⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.gloplacha.2022.104017 hal-03942667 https://hal.science/hal-03942667 doi:10.1016/j.gloplacha.2022.104017 |
op_doi |
https://doi.org/10.1016/j.gloplacha.2022.104017 |
container_title |
Global and Planetary Change |
container_volume |
220 |
container_start_page |
104017 |
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1766027147008278528 |