Rock glaciers throughout the French Alps accelerated and destabilised since 1990 as air temperatures increased
International audience Abstract Rock glaciers—ice-rich creeping landforms typical of permafrost mountain ranges—can develop an anomalous landslide-like behaviour called destabilisation. This behaviour is characterised by failure mechanisms (including cracks and crevasses) and increases in displaceme...
Published in: | Communications Earth & Environment |
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Online Access: | https://hal.science/hal-03249142 https://hal.science/hal-03249142/document https://hal.science/hal-03249142/file/s43247-021-00150-6.pdf https://doi.org/10.1038/s43247-021-00150-6 |
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ftunigrenoble:oai:HAL:hal-03249142v1 2024-05-19T07:41:54+00:00 Rock glaciers throughout the French Alps accelerated and destabilised since 1990 as air temperatures increased Marcer, Marco Cicoira, Alessandro Cusicanqui, Diego Bodin, Xavier Echelard, Thomas Obregon, Renée Schoeneich, Philippe 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) Université Grenoble Alpes (UGA) 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) Danmarks Tekniske Universitet = Technical University of Denmark (DTU) Department of Geography Zürich Universität Zürich Zürich = University of Zurich (UZH) 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)-Université Grenoble Alpes (UGA)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP ) 2021-05-07 https://hal.science/hal-03249142 https://hal.science/hal-03249142/document https://hal.science/hal-03249142/file/s43247-021-00150-6.pdf https://doi.org/10.1038/s43247-021-00150-6 en eng HAL CCSD Springer Nature info:eu-repo/semantics/altIdentifier/doi/10.1038/s43247-021-00150-6 hal-03249142 https://hal.science/hal-03249142 https://hal.science/hal-03249142/document https://hal.science/hal-03249142/file/s43247-021-00150-6.pdf doi:10.1038/s43247-021-00150-6 http://creativecommons.org/licenses/by/ info:eu-repo/semantics/OpenAccess ISSN: 2662-4435 Communications Earth & Environment https://hal.science/hal-03249142 Communications Earth & Environment, 2021, 2 (1), ⟨10.1038/s43247-021-00150-6⟩ [SDU.STU.GM]Sciences of the Universe [physics]/Earth Sciences/Geomorphology [SHS.GEO]Humanities and Social Sciences/Geography info:eu-repo/semantics/article Journal articles 2021 ftunigrenoble https://doi.org/10.1038/s43247-021-00150-6 2024-05-02T00:29:45Z International audience Abstract Rock glaciers—ice-rich creeping landforms typical of permafrost mountain ranges—can develop an anomalous landslide-like behaviour called destabilisation. This behaviour is characterised by failure mechanisms (including cracks and crevasses) and increases in displacement rates by one to two orders of magnitude. Existing studies of this phenomenon have been limited to a small number of landforms and short time spans. Here, we systematically investigate the evolution of rock glacier kinematics over the past seven decades for the entire French Alps by combining observations of landform features indicative of the onset of destabilisation with data on displacements rates using aerial orthoimagery. We show that rock glacier velocities have significantly increased since the 1990s, concurrent with the development of destabilisation in 18 landforms that represent 5% of the 337 active rock glaciers. This pattern of activity correlates with rising air temperatures in the region, which suggests that a warming climate may play a role in this process. Article in Journal/Newspaper Ice permafrost Université Grenoble Alpes: HAL Communications Earth & Environment 2 1 |
institution |
Open Polar |
collection |
Université Grenoble Alpes: HAL |
op_collection_id |
ftunigrenoble |
language |
English |
topic |
[SDU.STU.GM]Sciences of the Universe [physics]/Earth Sciences/Geomorphology [SHS.GEO]Humanities and Social Sciences/Geography |
spellingShingle |
[SDU.STU.GM]Sciences of the Universe [physics]/Earth Sciences/Geomorphology [SHS.GEO]Humanities and Social Sciences/Geography Marcer, Marco Cicoira, Alessandro Cusicanqui, Diego Bodin, Xavier Echelard, Thomas Obregon, Renée Schoeneich, Philippe Rock glaciers throughout the French Alps accelerated and destabilised since 1990 as air temperatures increased |
topic_facet |
[SDU.STU.GM]Sciences of the Universe [physics]/Earth Sciences/Geomorphology [SHS.GEO]Humanities and Social Sciences/Geography |
description |
International audience Abstract Rock glaciers—ice-rich creeping landforms typical of permafrost mountain ranges—can develop an anomalous landslide-like behaviour called destabilisation. This behaviour is characterised by failure mechanisms (including cracks and crevasses) and increases in displacement rates by one to two orders of magnitude. Existing studies of this phenomenon have been limited to a small number of landforms and short time spans. Here, we systematically investigate the evolution of rock glacier kinematics over the past seven decades for the entire French Alps by combining observations of landform features indicative of the onset of destabilisation with data on displacements rates using aerial orthoimagery. We show that rock glacier velocities have significantly increased since the 1990s, concurrent with the development of destabilisation in 18 landforms that represent 5% of the 337 active rock glaciers. This pattern of activity correlates with rising air temperatures in the region, which suggests that a warming climate may play a role in this process. |
author2 |
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) Université Grenoble Alpes (UGA) 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) Danmarks Tekniske Universitet = Technical University of Denmark (DTU) Department of Geography Zürich Universität Zürich Zürich = University of Zurich (UZH) 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)-Université Grenoble Alpes (UGA)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP ) |
format |
Article in Journal/Newspaper |
author |
Marcer, Marco Cicoira, Alessandro Cusicanqui, Diego Bodin, Xavier Echelard, Thomas Obregon, Renée Schoeneich, Philippe |
author_facet |
Marcer, Marco Cicoira, Alessandro Cusicanqui, Diego Bodin, Xavier Echelard, Thomas Obregon, Renée Schoeneich, Philippe |
author_sort |
Marcer, Marco |
title |
Rock glaciers throughout the French Alps accelerated and destabilised since 1990 as air temperatures increased |
title_short |
Rock glaciers throughout the French Alps accelerated and destabilised since 1990 as air temperatures increased |
title_full |
Rock glaciers throughout the French Alps accelerated and destabilised since 1990 as air temperatures increased |
title_fullStr |
Rock glaciers throughout the French Alps accelerated and destabilised since 1990 as air temperatures increased |
title_full_unstemmed |
Rock glaciers throughout the French Alps accelerated and destabilised since 1990 as air temperatures increased |
title_sort |
rock glaciers throughout the french alps accelerated and destabilised since 1990 as air temperatures increased |
publisher |
HAL CCSD |
publishDate |
2021 |
url |
https://hal.science/hal-03249142 https://hal.science/hal-03249142/document https://hal.science/hal-03249142/file/s43247-021-00150-6.pdf https://doi.org/10.1038/s43247-021-00150-6 |
genre |
Ice permafrost |
genre_facet |
Ice permafrost |
op_source |
ISSN: 2662-4435 Communications Earth & Environment https://hal.science/hal-03249142 Communications Earth & Environment, 2021, 2 (1), ⟨10.1038/s43247-021-00150-6⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1038/s43247-021-00150-6 hal-03249142 https://hal.science/hal-03249142 https://hal.science/hal-03249142/document https://hal.science/hal-03249142/file/s43247-021-00150-6.pdf doi:10.1038/s43247-021-00150-6 |
op_rights |
http://creativecommons.org/licenses/by/ info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1038/s43247-021-00150-6 |
container_title |
Communications Earth & Environment |
container_volume |
2 |
container_issue |
1 |
_version_ |
1799481509247188992 |