Monitoring Rock Glacier Kinematics with Satellite Synthetic Aperture Radar
International audience Active rock glaciers represent the best visual expression of mountain permafrost that can be mapped and monitored directly using remotely sensed data. Active rock glaciers are bodies that consist of a perennially frozen ice/rock mixture and express a distinct flow-like morphol...
Published in: | Remote Sensing |
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Format: | Article in Journal/Newspaper |
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Online Access: | https://hal.archives-ouvertes.fr/hal-03001329 https://hal.archives-ouvertes.fr/hal-03001329/document https://hal.archives-ouvertes.fr/hal-03001329/file/Strozzi%20et%20al.%20-%202020%20-%20Monitoring%20Rock%20Glacier%20Kinematics%20with%20Satellite%20.pdf https://doi.org/10.3390/rs12030559 |
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ftunivnantes:oai:HAL:hal-03001329v1 2023-05-15T16:21:24+02:00 Monitoring Rock Glacier Kinematics with Satellite Synthetic Aperture Radar Strozzi, Tazio Caduff, Rafael Jones, Nina Barboux, Chloé Delaloye, Reynald Bodin, Xavier Kääb, Andreas Mätzler, Eva Schrott, Lothar Gamma Remote Sensing Research and Consulting AG Department of Geosciences Fribourg Albert-Ludwigs-Universität Freiburg 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) Department of Geosciences Oslo Faculty of Mathematics and Natural Sciences Oslo University of Oslo (UiO)-University of Oslo (UiO) Rheinische Friedrich-Wilhelms-Universität Bonn 2020-02 https://hal.archives-ouvertes.fr/hal-03001329 https://hal.archives-ouvertes.fr/hal-03001329/document https://hal.archives-ouvertes.fr/hal-03001329/file/Strozzi%20et%20al.%20-%202020%20-%20Monitoring%20Rock%20Glacier%20Kinematics%20with%20Satellite%20.pdf https://doi.org/10.3390/rs12030559 en eng HAL CCSD MDPI info:eu-repo/semantics/altIdentifier/doi/10.3390/rs12030559 hal-03001329 https://hal.archives-ouvertes.fr/hal-03001329 https://hal.archives-ouvertes.fr/hal-03001329/document https://hal.archives-ouvertes.fr/hal-03001329/file/Strozzi%20et%20al.%20-%202020%20-%20Monitoring%20Rock%20Glacier%20Kinematics%20with%20Satellite%20.pdf doi:10.3390/rs12030559 info:eu-repo/semantics/OpenAccess ISSN: 2072-4292 Remote Sensing https://hal.archives-ouvertes.fr/hal-03001329 Remote Sensing, MDPI, 2020, 12 (3), pp.559. ⟨10.3390/rs12030559⟩ permafrost active rock glaciers kinematics InSAR Sentinel-1 [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 2020 ftunivnantes https://doi.org/10.3390/rs12030559 2022-09-13T23:09:39Z International audience Active rock glaciers represent the best visual expression of mountain permafrost that can be mapped and monitored directly using remotely sensed data. Active rock glaciers are bodies that consist of a perennially frozen ice/rock mixture and express a distinct flow-like morphology indicating downslope permafrost creep movement. Annual rates of motion have ranged from a few millimeters to several meters per year, varying within the annual cycle, from year to year, as well as at the decennial time scale. During the last decade, in situ observations in the European Alps have shown that active rock glaciers are responding almost synchronously to inter-annual and decennial changes in ground temperature, suggesting that the relative changes of their kinematics are a general indicator of the evolution of mountain permafrost conditions. Here, we used satellite radar interferometry (InSAR) to monitor the rate of motion of various active rock glaciers in the Swiss Alps, Qeqertarsuaq (Western Greenland), and the semiarid Andes of South America. Velocity time series computed with Sentinel-1 SAR images, regularly acquired since 2014, every six days over Europe and Greenland and every 12 days over the Andes, show annual fluctuations, with higher velocities at the end of the summer. A JERS-1 image pair of 1996 and stacks of very high-resolution SAR images from TerraSAR-X and Cosmo-SkyMed from 2008 to 2017 were analyzed using InSAR and offset tracking over the Western Swiss Alps in order to extend the main observation period of our study. A quantitative assessment of the accuracy of InSAR and offset tracking was performed by comparison with in situ methods. Our results for the three different study regions demonstrate that Sentinel-1 InSAR can complement worldwide in situ measurements of active rock glacier kinematics. Article in Journal/Newspaper glacier Greenland Ice permafrost Qeqertarsuaq Université de Nantes: HAL-UNIV-NANTES Greenland Qeqertarsuaq ENVELOPE(-56.867,-56.867,74.400,74.400) Remote Sensing 12 3 559 |
institution |
Open Polar |
collection |
Université de Nantes: HAL-UNIV-NANTES |
op_collection_id |
ftunivnantes |
language |
English |
topic |
permafrost active rock glaciers kinematics InSAR Sentinel-1 [SDU.STU.GM]Sciences of the Universe [physics]/Earth Sciences/Geomorphology [SHS.GEO]Humanities and Social Sciences/Geography |
spellingShingle |
permafrost active rock glaciers kinematics InSAR Sentinel-1 [SDU.STU.GM]Sciences of the Universe [physics]/Earth Sciences/Geomorphology [SHS.GEO]Humanities and Social Sciences/Geography Strozzi, Tazio Caduff, Rafael Jones, Nina Barboux, Chloé Delaloye, Reynald Bodin, Xavier Kääb, Andreas Mätzler, Eva Schrott, Lothar Monitoring Rock Glacier Kinematics with Satellite Synthetic Aperture Radar |
topic_facet |
permafrost active rock glaciers kinematics InSAR Sentinel-1 [SDU.STU.GM]Sciences of the Universe [physics]/Earth Sciences/Geomorphology [SHS.GEO]Humanities and Social Sciences/Geography |
description |
International audience Active rock glaciers represent the best visual expression of mountain permafrost that can be mapped and monitored directly using remotely sensed data. Active rock glaciers are bodies that consist of a perennially frozen ice/rock mixture and express a distinct flow-like morphology indicating downslope permafrost creep movement. Annual rates of motion have ranged from a few millimeters to several meters per year, varying within the annual cycle, from year to year, as well as at the decennial time scale. During the last decade, in situ observations in the European Alps have shown that active rock glaciers are responding almost synchronously to inter-annual and decennial changes in ground temperature, suggesting that the relative changes of their kinematics are a general indicator of the evolution of mountain permafrost conditions. Here, we used satellite radar interferometry (InSAR) to monitor the rate of motion of various active rock glaciers in the Swiss Alps, Qeqertarsuaq (Western Greenland), and the semiarid Andes of South America. Velocity time series computed with Sentinel-1 SAR images, regularly acquired since 2014, every six days over Europe and Greenland and every 12 days over the Andes, show annual fluctuations, with higher velocities at the end of the summer. A JERS-1 image pair of 1996 and stacks of very high-resolution SAR images from TerraSAR-X and Cosmo-SkyMed from 2008 to 2017 were analyzed using InSAR and offset tracking over the Western Swiss Alps in order to extend the main observation period of our study. A quantitative assessment of the accuracy of InSAR and offset tracking was performed by comparison with in situ methods. Our results for the three different study regions demonstrate that Sentinel-1 InSAR can complement worldwide in situ measurements of active rock glacier kinematics. |
author2 |
Gamma Remote Sensing Research and Consulting AG Department of Geosciences Fribourg Albert-Ludwigs-Universität Freiburg 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) Department of Geosciences Oslo Faculty of Mathematics and Natural Sciences Oslo University of Oslo (UiO)-University of Oslo (UiO) Rheinische Friedrich-Wilhelms-Universität Bonn |
format |
Article in Journal/Newspaper |
author |
Strozzi, Tazio Caduff, Rafael Jones, Nina Barboux, Chloé Delaloye, Reynald Bodin, Xavier Kääb, Andreas Mätzler, Eva Schrott, Lothar |
author_facet |
Strozzi, Tazio Caduff, Rafael Jones, Nina Barboux, Chloé Delaloye, Reynald Bodin, Xavier Kääb, Andreas Mätzler, Eva Schrott, Lothar |
author_sort |
Strozzi, Tazio |
title |
Monitoring Rock Glacier Kinematics with Satellite Synthetic Aperture Radar |
title_short |
Monitoring Rock Glacier Kinematics with Satellite Synthetic Aperture Radar |
title_full |
Monitoring Rock Glacier Kinematics with Satellite Synthetic Aperture Radar |
title_fullStr |
Monitoring Rock Glacier Kinematics with Satellite Synthetic Aperture Radar |
title_full_unstemmed |
Monitoring Rock Glacier Kinematics with Satellite Synthetic Aperture Radar |
title_sort |
monitoring rock glacier kinematics with satellite synthetic aperture radar |
publisher |
HAL CCSD |
publishDate |
2020 |
url |
https://hal.archives-ouvertes.fr/hal-03001329 https://hal.archives-ouvertes.fr/hal-03001329/document https://hal.archives-ouvertes.fr/hal-03001329/file/Strozzi%20et%20al.%20-%202020%20-%20Monitoring%20Rock%20Glacier%20Kinematics%20with%20Satellite%20.pdf https://doi.org/10.3390/rs12030559 |
long_lat |
ENVELOPE(-56.867,-56.867,74.400,74.400) |
geographic |
Greenland Qeqertarsuaq |
geographic_facet |
Greenland Qeqertarsuaq |
genre |
glacier Greenland Ice permafrost Qeqertarsuaq |
genre_facet |
glacier Greenland Ice permafrost Qeqertarsuaq |
op_source |
ISSN: 2072-4292 Remote Sensing https://hal.archives-ouvertes.fr/hal-03001329 Remote Sensing, MDPI, 2020, 12 (3), pp.559. ⟨10.3390/rs12030559⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.3390/rs12030559 hal-03001329 https://hal.archives-ouvertes.fr/hal-03001329 https://hal.archives-ouvertes.fr/hal-03001329/document https://hal.archives-ouvertes.fr/hal-03001329/file/Strozzi%20et%20al.%20-%202020%20-%20Monitoring%20Rock%20Glacier%20Kinematics%20with%20Satellite%20.pdf doi:10.3390/rs12030559 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.3390/rs12030559 |
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Remote Sensing |
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