Mechanisms of Landslide Destabilization Induced by Glacier-Retreat on Tungnakvíslarjökull Area, Iceland
International audience The massive worldwide deglaciation leads to more frequent slope instabilities in mountainous terrains. The physical processes leading to such destabilizations are poorly constrained due to little monitoring of dynamic parameters at the local scale. Here we study a very large s...
Published in: | Geophysical Research Letters |
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Format: | Article in Journal/Newspaper |
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2022
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Online Access: | https://hal-insu.archives-ouvertes.fr/insu-03861045 https://hal-insu.archives-ouvertes.fr/insu-03861045/document https://hal-insu.archives-ouvertes.fr/insu-03861045/file/Geophysical%20Research%20Letters%20-%202022%20-%20Lacroix%20-%20Mechanisms%20of%20Landslide%20Destabilization%20Induced%20by%20Glacier%25u2010Retreat%20on.pdf https://doi.org/10.1029/2022GL098302 |
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ftuniveiffel:oai:HAL:insu-03861045v1 2023-05-15T16:21:36+02:00 Mechanisms of Landslide Destabilization Induced by Glacier-Retreat on Tungnakvíslarjökull Area, Iceland Lacroix, Pascal Belart, Joaquin M. C. Berthier, Etienne Sæmundsson, Dorsteinn Jónsdóttir, Kristín. Institut des Sciences de la Terre (ISTerre) Institut national des sciences de l'Univers (INSU - CNRS)-Institut de recherche pour le développement IRD : UR219-Université Savoie Mont Blanc (USMB Université de Savoie Université de Chambéry )-Centre National de la Recherche Scientifique (CNRS)-Université Gustave Eiffel-Université Grenoble Alpes (UGA) Laboratoire d'études en Géophysique et océanographie spatiales (LEGOS) Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3) Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP) Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Centre National de la Recherche Scientifique (CNRS) 2022 https://hal-insu.archives-ouvertes.fr/insu-03861045 https://hal-insu.archives-ouvertes.fr/insu-03861045/document https://hal-insu.archives-ouvertes.fr/insu-03861045/file/Geophysical%20Research%20Letters%20-%202022%20-%20Lacroix%20-%20Mechanisms%20of%20Landslide%20Destabilization%20Induced%20by%20Glacier%25u2010Retreat%20on.pdf https://doi.org/10.1029/2022GL098302 en eng HAL CCSD American Geophysical Union info:eu-repo/semantics/altIdentifier/doi/10.1029/2022GL098302 insu-03861045 https://hal-insu.archives-ouvertes.fr/insu-03861045 https://hal-insu.archives-ouvertes.fr/insu-03861045/document https://hal-insu.archives-ouvertes.fr/insu-03861045/file/Geophysical%20Research%20Letters%20-%202022%20-%20Lacroix%20-%20Mechanisms%20of%20Landslide%20Destabilization%20Induced%20by%20Glacier%25u2010Retreat%20on.pdf BIBCODE: 2022GeoRL.4998302L doi:10.1029/2022GL098302 IRD: fdi:010085868 http://creativecommons.org/licenses/by-nc-nd/ info:eu-repo/semantics/OpenAccess ISSN: 0094-8276 EISSN: 1944-8007 Geophysical Research Letters https://hal-insu.archives-ouvertes.fr/insu-03861045 Geophysical Research Letters, 2022, 49, ⟨10.1029/2022GL098302⟩ landslide glacier-retreat remote-sensing kinematics seismology asperity [SDU]Sciences of the Universe [physics] [SDU.STU]Sciences of the Universe [physics]/Earth Sciences info:eu-repo/semantics/article Journal articles 2022 ftuniveiffel https://doi.org/10.1029/2022GL098302 2023-03-25T21:46:05Z International audience The massive worldwide deglaciation leads to more frequent slope instabilities in mountainous terrains. The physical processes leading to such destabilizations are poorly constrained due to little monitoring of dynamic parameters at the local scale. Here we study a very large slow-moving landslide (∼0.8 km 2 ), on the flank of Tungnakvíslarjökull glacier in Iceland. Based on a combination of remote sensing images, we monitor the landslide and glacier kinematics over 75 years, with a focus over the period 1999-2019 when rapid glacier wastage has been observed. The landslide accelerates from 2 to 45 m/yr in the 6 years following a sudden increase in glacier mass loss. This acceleration coincides with intense quake activity (Mℓ < 2.8), recorded by a regional seismic network. We show that this seismicity is caused by the landslide sliding on a rough surface. The evolution of the quake magnitudes suggests a progressive segmentation of the landslide mass during its acceleration. Article in Journal/Newspaper glacier Iceland HAL Univ-Eiffel (Université Gustave Eiffel) Geophysical Research Letters 49 14 |
institution |
Open Polar |
collection |
HAL Univ-Eiffel (Université Gustave Eiffel) |
op_collection_id |
ftuniveiffel |
language |
English |
topic |
landslide glacier-retreat remote-sensing kinematics seismology asperity [SDU]Sciences of the Universe [physics] [SDU.STU]Sciences of the Universe [physics]/Earth Sciences |
spellingShingle |
landslide glacier-retreat remote-sensing kinematics seismology asperity [SDU]Sciences of the Universe [physics] [SDU.STU]Sciences of the Universe [physics]/Earth Sciences Lacroix, Pascal Belart, Joaquin M. C. Berthier, Etienne Sæmundsson, Dorsteinn Jónsdóttir, Kristín. Mechanisms of Landslide Destabilization Induced by Glacier-Retreat on Tungnakvíslarjökull Area, Iceland |
topic_facet |
landslide glacier-retreat remote-sensing kinematics seismology asperity [SDU]Sciences of the Universe [physics] [SDU.STU]Sciences of the Universe [physics]/Earth Sciences |
description |
International audience The massive worldwide deglaciation leads to more frequent slope instabilities in mountainous terrains. The physical processes leading to such destabilizations are poorly constrained due to little monitoring of dynamic parameters at the local scale. Here we study a very large slow-moving landslide (∼0.8 km 2 ), on the flank of Tungnakvíslarjökull glacier in Iceland. Based on a combination of remote sensing images, we monitor the landslide and glacier kinematics over 75 years, with a focus over the period 1999-2019 when rapid glacier wastage has been observed. The landslide accelerates from 2 to 45 m/yr in the 6 years following a sudden increase in glacier mass loss. This acceleration coincides with intense quake activity (Mℓ < 2.8), recorded by a regional seismic network. We show that this seismicity is caused by the landslide sliding on a rough surface. The evolution of the quake magnitudes suggests a progressive segmentation of the landslide mass during its acceleration. |
author2 |
Institut des Sciences de la Terre (ISTerre) Institut national des sciences de l'Univers (INSU - CNRS)-Institut de recherche pour le développement IRD : UR219-Université Savoie Mont Blanc (USMB Université de Savoie Université de Chambéry )-Centre National de la Recherche Scientifique (CNRS)-Université Gustave Eiffel-Université Grenoble Alpes (UGA) Laboratoire d'études en Géophysique et océanographie spatiales (LEGOS) Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3) Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP) Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Centre National de la Recherche Scientifique (CNRS) |
format |
Article in Journal/Newspaper |
author |
Lacroix, Pascal Belart, Joaquin M. C. Berthier, Etienne Sæmundsson, Dorsteinn Jónsdóttir, Kristín. |
author_facet |
Lacroix, Pascal Belart, Joaquin M. C. Berthier, Etienne Sæmundsson, Dorsteinn Jónsdóttir, Kristín. |
author_sort |
Lacroix, Pascal |
title |
Mechanisms of Landslide Destabilization Induced by Glacier-Retreat on Tungnakvíslarjökull Area, Iceland |
title_short |
Mechanisms of Landslide Destabilization Induced by Glacier-Retreat on Tungnakvíslarjökull Area, Iceland |
title_full |
Mechanisms of Landslide Destabilization Induced by Glacier-Retreat on Tungnakvíslarjökull Area, Iceland |
title_fullStr |
Mechanisms of Landslide Destabilization Induced by Glacier-Retreat on Tungnakvíslarjökull Area, Iceland |
title_full_unstemmed |
Mechanisms of Landslide Destabilization Induced by Glacier-Retreat on Tungnakvíslarjökull Area, Iceland |
title_sort |
mechanisms of landslide destabilization induced by glacier-retreat on tungnakvíslarjökull area, iceland |
publisher |
HAL CCSD |
publishDate |
2022 |
url |
https://hal-insu.archives-ouvertes.fr/insu-03861045 https://hal-insu.archives-ouvertes.fr/insu-03861045/document https://hal-insu.archives-ouvertes.fr/insu-03861045/file/Geophysical%20Research%20Letters%20-%202022%20-%20Lacroix%20-%20Mechanisms%20of%20Landslide%20Destabilization%20Induced%20by%20Glacier%25u2010Retreat%20on.pdf https://doi.org/10.1029/2022GL098302 |
genre |
glacier Iceland |
genre_facet |
glacier Iceland |
op_source |
ISSN: 0094-8276 EISSN: 1944-8007 Geophysical Research Letters https://hal-insu.archives-ouvertes.fr/insu-03861045 Geophysical Research Letters, 2022, 49, ⟨10.1029/2022GL098302⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1029/2022GL098302 insu-03861045 https://hal-insu.archives-ouvertes.fr/insu-03861045 https://hal-insu.archives-ouvertes.fr/insu-03861045/document https://hal-insu.archives-ouvertes.fr/insu-03861045/file/Geophysical%20Research%20Letters%20-%202022%20-%20Lacroix%20-%20Mechanisms%20of%20Landslide%20Destabilization%20Induced%20by%20Glacier%25u2010Retreat%20on.pdf BIBCODE: 2022GeoRL.4998302L doi:10.1029/2022GL098302 IRD: fdi:010085868 |
op_rights |
http://creativecommons.org/licenses/by-nc-nd/ info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1029/2022GL098302 |
container_title |
Geophysical Research Letters |
container_volume |
49 |
container_issue |
14 |
_version_ |
1766009606859915264 |