Monitoring ice-calving at the Astrolabe glacier (Antarctica) with seismological and Sentinel-2 satellite data
Dans le cadre de l’intégration aux dispositions européens EPOS, Résif s'est transformé en octobre 2023 en Epos-France, une nouvelle infrastructure de recherche aux contours thématiques plus larges et en accord avec ceux de sa grande sœur européenne. International audience Better understanding t...
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2021
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Online Access: | https://hal.science/hal-03442663 https://hal.science/hal-03442663/document https://hal.science/hal-03442663/file/Resif2021_1Slide_Astrolabe_Provost.pdf |
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ftunigrenoble:oai:HAL:hal-03442663v1 2024-04-14T08:04:03+00:00 Monitoring ice-calving at the Astrolabe glacier (Antarctica) with seismological and Sentinel-2 satellite data Provost, Floriane Malet, Jean-Philippe Zigone, Dimitri Le Meur, Emmanuel Hibert, Clément Université Laval Québec (ULaval) Institut Terre Environnement Strasbourg (ITES) École Nationale du Génie de l'Eau et de l'Environnement de Strasbourg (ENGEES)-Université de Strasbourg (UNISTRA)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS) Ecole et Observatoire des Sciences de la Terre (EOST) Université de Strasbourg (UNISTRA)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS) 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 ) Université Grenoble Alpes (UGA) Résif Obernai (67210), France 2021-11-15 https://hal.science/hal-03442663 https://hal.science/hal-03442663/document https://hal.science/hal-03442663/file/Resif2021_1Slide_Astrolabe_Provost.pdf en eng HAL CCSD hal-03442663 https://hal.science/hal-03442663 https://hal.science/hal-03442663/document https://hal.science/hal-03442663/file/Resif2021_1Slide_Astrolabe_Provost.pdf info:eu-repo/semantics/OpenAccess 5èmes Rencontres Scientifiques et Techniques Résif https://hal.science/hal-03442663 5èmes Rencontres Scientifiques et Techniques Résif, Nov 2021, Obernai (67210), France RESIF Seismology Epos-France Sismologie [SDU.STU.GP]Sciences of the Universe [physics]/Earth Sciences/Geophysics [physics.geo-ph] info:eu-repo/semantics/conferenceObject Conference poster 2021 ftunigrenoble 2024-03-21T16:14:59Z Dans le cadre de l’intégration aux dispositions européens EPOS, Résif s'est transformé en octobre 2023 en Epos-France, une nouvelle infrastructure de recherche aux contours thématiques plus larges et en accord avec ceux de sa grande sœur européenne. International audience Better understanding the global (e.g. ice mass balance, ice motion) and local (e.g. fissures and calving processes, basal melting, sea-ice interactions) dynamics of tidewater Antarctic outlet glaciers is of paramount importance to simulate the ice-sheet response to global warming. The Astrolable glacier is located in Terre Adélie (140°E, 67°S) near the Dumont d'Urville French research station. Recently, a large fissure of around 3km has been observed in the western shore of the glacier which could lead to a calving of ca. 28km2. We used two monitoring techniques: optical remote sensing and seismology to analyze changes in the activity of the glacier. We computed the surface velocity and strain rates from time series of multispectral Sentinel-2 imagery. The joint analysis of the seismological data and the velocity and strain maps are discussed with the recent evolution of the ice-shelf. The strain maps show complex patterns of extension and compression areas with a seasonal increase during the summer months. The number of calving events significantly increased during 2016-2021 in comparison with the period 2012-2016. Conference Object Antarc* Antarctic Antarctica Astrolabe Glacier Ice Sheet Ice Shelf Sea ice Tidewater Université Grenoble Alpes: HAL Antarctic Astrolabe ENVELOPE(140.000,140.000,-66.733,-66.733) Astrolabe Glacier ENVELOPE(139.917,139.917,-66.750,-66.750) Dumont d'Urville ENVELOPE(140.017,140.017,-66.667,-66.667) Dumont-d'Urville ENVELOPE(140.013,140.013,-66.667,-66.667) Terre Adélie ENVELOPE(139.000,139.000,-67.000,-67.000) Terre-Adélie ENVELOPE(138.991,138.991,-59.999,-59.999) |
institution |
Open Polar |
collection |
Université Grenoble Alpes: HAL |
op_collection_id |
ftunigrenoble |
language |
English |
topic |
RESIF Seismology Epos-France Sismologie [SDU.STU.GP]Sciences of the Universe [physics]/Earth Sciences/Geophysics [physics.geo-ph] |
spellingShingle |
RESIF Seismology Epos-France Sismologie [SDU.STU.GP]Sciences of the Universe [physics]/Earth Sciences/Geophysics [physics.geo-ph] Provost, Floriane Malet, Jean-Philippe Zigone, Dimitri Le Meur, Emmanuel Hibert, Clément Monitoring ice-calving at the Astrolabe glacier (Antarctica) with seismological and Sentinel-2 satellite data |
topic_facet |
RESIF Seismology Epos-France Sismologie [SDU.STU.GP]Sciences of the Universe [physics]/Earth Sciences/Geophysics [physics.geo-ph] |
description |
Dans le cadre de l’intégration aux dispositions européens EPOS, Résif s'est transformé en octobre 2023 en Epos-France, une nouvelle infrastructure de recherche aux contours thématiques plus larges et en accord avec ceux de sa grande sœur européenne. International audience Better understanding the global (e.g. ice mass balance, ice motion) and local (e.g. fissures and calving processes, basal melting, sea-ice interactions) dynamics of tidewater Antarctic outlet glaciers is of paramount importance to simulate the ice-sheet response to global warming. The Astrolable glacier is located in Terre Adélie (140°E, 67°S) near the Dumont d'Urville French research station. Recently, a large fissure of around 3km has been observed in the western shore of the glacier which could lead to a calving of ca. 28km2. We used two monitoring techniques: optical remote sensing and seismology to analyze changes in the activity of the glacier. We computed the surface velocity and strain rates from time series of multispectral Sentinel-2 imagery. The joint analysis of the seismological data and the velocity and strain maps are discussed with the recent evolution of the ice-shelf. The strain maps show complex patterns of extension and compression areas with a seasonal increase during the summer months. The number of calving events significantly increased during 2016-2021 in comparison with the period 2012-2016. |
author2 |
Université Laval Québec (ULaval) Institut Terre Environnement Strasbourg (ITES) École Nationale du Génie de l'Eau et de l'Environnement de Strasbourg (ENGEES)-Université de Strasbourg (UNISTRA)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS) Ecole et Observatoire des Sciences de la Terre (EOST) Université de Strasbourg (UNISTRA)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS) 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 ) Université Grenoble Alpes (UGA) Résif |
format |
Conference Object |
author |
Provost, Floriane Malet, Jean-Philippe Zigone, Dimitri Le Meur, Emmanuel Hibert, Clément |
author_facet |
Provost, Floriane Malet, Jean-Philippe Zigone, Dimitri Le Meur, Emmanuel Hibert, Clément |
author_sort |
Provost, Floriane |
title |
Monitoring ice-calving at the Astrolabe glacier (Antarctica) with seismological and Sentinel-2 satellite data |
title_short |
Monitoring ice-calving at the Astrolabe glacier (Antarctica) with seismological and Sentinel-2 satellite data |
title_full |
Monitoring ice-calving at the Astrolabe glacier (Antarctica) with seismological and Sentinel-2 satellite data |
title_fullStr |
Monitoring ice-calving at the Astrolabe glacier (Antarctica) with seismological and Sentinel-2 satellite data |
title_full_unstemmed |
Monitoring ice-calving at the Astrolabe glacier (Antarctica) with seismological and Sentinel-2 satellite data |
title_sort |
monitoring ice-calving at the astrolabe glacier (antarctica) with seismological and sentinel-2 satellite data |
publisher |
HAL CCSD |
publishDate |
2021 |
url |
https://hal.science/hal-03442663 https://hal.science/hal-03442663/document https://hal.science/hal-03442663/file/Resif2021_1Slide_Astrolabe_Provost.pdf |
op_coverage |
Obernai (67210), France |
long_lat |
ENVELOPE(140.000,140.000,-66.733,-66.733) ENVELOPE(139.917,139.917,-66.750,-66.750) ENVELOPE(140.017,140.017,-66.667,-66.667) ENVELOPE(140.013,140.013,-66.667,-66.667) ENVELOPE(139.000,139.000,-67.000,-67.000) ENVELOPE(138.991,138.991,-59.999,-59.999) |
geographic |
Antarctic Astrolabe Astrolabe Glacier Dumont d'Urville Dumont-d'Urville Terre Adélie Terre-Adélie |
geographic_facet |
Antarctic Astrolabe Astrolabe Glacier Dumont d'Urville Dumont-d'Urville Terre Adélie Terre-Adélie |
genre |
Antarc* Antarctic Antarctica Astrolabe Glacier Ice Sheet Ice Shelf Sea ice Tidewater |
genre_facet |
Antarc* Antarctic Antarctica Astrolabe Glacier Ice Sheet Ice Shelf Sea ice Tidewater |
op_source |
5èmes Rencontres Scientifiques et Techniques Résif https://hal.science/hal-03442663 5èmes Rencontres Scientifiques et Techniques Résif, Nov 2021, Obernai (67210), France |
op_relation |
hal-03442663 https://hal.science/hal-03442663 https://hal.science/hal-03442663/document https://hal.science/hal-03442663/file/Resif2021_1Slide_Astrolabe_Provost.pdf |
op_rights |
info:eu-repo/semantics/OpenAccess |
_version_ |
1796300414968135680 |