Ice wastage on the Kerguelen Islands (49°S, 69°E) between 1963 and 2006
International audience We observed the wastage of ice masses on the Kerguelen Islands (Indian Ocean, 49°S, 69°E) using historical information and recent satellite data. Overall, the total ice-covered area on the islands declined from 703 to 552 km2 between 1963 and 2001, a reduction of 21%. The area...
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Format: | Article in Journal/Newspaper |
Language: | English |
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Online Access: | https://hal.science/hal-00406745 https://hal.science/hal-00406745/document https://hal.science/hal-00406745/file/Berthier_et_al_JGR_2009.pdf https://doi.org/10.1029/2008JF001192 |
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ftinsu:oai:HAL:hal-00406745v1 2023-12-17T10:31:18+01:00 Ice wastage on the Kerguelen Islands (49°S, 69°E) between 1963 and 2006 Berthier, Etienne Le Bris, Raymond Mabileau, Laure Testut, L. Rémy, Frédérique Laboratoire d'études en Géophysique et océanographie spatiales (LEGOS) Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3) Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP) Université de Toulouse (UT)-Université de Toulouse (UT)-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) Department of Geography Zürich Universität Zürich Zürich = University of Zurich (UZH) 2009 https://hal.science/hal-00406745 https://hal.science/hal-00406745/document https://hal.science/hal-00406745/file/Berthier_et_al_JGR_2009.pdf https://doi.org/10.1029/2008JF001192 en eng HAL CCSD American Geophysical Union info:eu-repo/semantics/altIdentifier/doi/10.1029/2008JF001192 hal-00406745 https://hal.science/hal-00406745 https://hal.science/hal-00406745/document https://hal.science/hal-00406745/file/Berthier_et_al_JGR_2009.pdf doi:10.1029/2008JF001192 info:eu-repo/semantics/OpenAccess ISSN: 0148-0227 EISSN: 2156-2202 Journal of Geophysical Research https://hal.science/hal-00406745 Journal of Geophysical Research, 2009, 114, pp.F03005. ⟨10.1029/2008JF001192⟩ [SDU.STU.GL]Sciences of the Universe [physics]/Earth Sciences/Glaciology info:eu-repo/semantics/article Journal articles 2009 ftinsu https://doi.org/10.1029/2008JF001192 2023-11-22T17:27:55Z International audience We observed the wastage of ice masses on the Kerguelen Islands (Indian Ocean, 49°S, 69°E) using historical information and recent satellite data. Overall, the total ice-covered area on the islands declined from 703 to 552 km2 between 1963 and 2001, a reduction of 21%. The area of Cook ice cap (the main ice body) decreased asymmetrically from 501 to 403 km2. West-flowing glaciers lost 11% of their area while east-flowing glaciers lost 28%. After 1991, the retreat rate accelerated from 1.9 km2/yr (1963-1991) to 3.8 km2/yr (1991-2003). Between 1963 and 2000, the ice volume loss was 25-30 km3, equivalent to an area-average ice thinning rate of 1.4-1.7 m/yr. The glacial retreat took place in the climatic context of a relatively low level of precipitation (compared to the 1950s) and a ~1°C warming that occurred between 1964 and 1982. The acceleration of the ice losses since, at least, the 1990s indicates that the state of the ice bodies on the Kerguelen Islands is still far from balanced. Together with other studies in Patagonia, South Georgia and Heard Island, our analysis is consistent with a pattern of strong and accelerated wastage of ice masses influenced by the Southern Ocean. Article in Journal/Newspaper Heard Island Ice cap Kerguelen Islands Southern Ocean Institut national des sciences de l'Univers: HAL-INSU Heard Island Indian Kerguelen Kerguelen Islands Patagonia Southern Ocean Journal of Geophysical Research 114 F3 |
institution |
Open Polar |
collection |
Institut national des sciences de l'Univers: HAL-INSU |
op_collection_id |
ftinsu |
language |
English |
topic |
[SDU.STU.GL]Sciences of the Universe [physics]/Earth Sciences/Glaciology |
spellingShingle |
[SDU.STU.GL]Sciences of the Universe [physics]/Earth Sciences/Glaciology Berthier, Etienne Le Bris, Raymond Mabileau, Laure Testut, L. Rémy, Frédérique Ice wastage on the Kerguelen Islands (49°S, 69°E) between 1963 and 2006 |
topic_facet |
[SDU.STU.GL]Sciences of the Universe [physics]/Earth Sciences/Glaciology |
description |
International audience We observed the wastage of ice masses on the Kerguelen Islands (Indian Ocean, 49°S, 69°E) using historical information and recent satellite data. Overall, the total ice-covered area on the islands declined from 703 to 552 km2 between 1963 and 2001, a reduction of 21%. The area of Cook ice cap (the main ice body) decreased asymmetrically from 501 to 403 km2. West-flowing glaciers lost 11% of their area while east-flowing glaciers lost 28%. After 1991, the retreat rate accelerated from 1.9 km2/yr (1963-1991) to 3.8 km2/yr (1991-2003). Between 1963 and 2000, the ice volume loss was 25-30 km3, equivalent to an area-average ice thinning rate of 1.4-1.7 m/yr. The glacial retreat took place in the climatic context of a relatively low level of precipitation (compared to the 1950s) and a ~1°C warming that occurred between 1964 and 1982. The acceleration of the ice losses since, at least, the 1990s indicates that the state of the ice bodies on the Kerguelen Islands is still far from balanced. Together with other studies in Patagonia, South Georgia and Heard Island, our analysis is consistent with a pattern of strong and accelerated wastage of ice masses influenced by the Southern Ocean. |
author2 |
Laboratoire d'études en Géophysique et océanographie spatiales (LEGOS) Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3) Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP) Université de Toulouse (UT)-Université de Toulouse (UT)-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) Department of Geography Zürich Universität Zürich Zürich = University of Zurich (UZH) |
format |
Article in Journal/Newspaper |
author |
Berthier, Etienne Le Bris, Raymond Mabileau, Laure Testut, L. Rémy, Frédérique |
author_facet |
Berthier, Etienne Le Bris, Raymond Mabileau, Laure Testut, L. Rémy, Frédérique |
author_sort |
Berthier, Etienne |
title |
Ice wastage on the Kerguelen Islands (49°S, 69°E) between 1963 and 2006 |
title_short |
Ice wastage on the Kerguelen Islands (49°S, 69°E) between 1963 and 2006 |
title_full |
Ice wastage on the Kerguelen Islands (49°S, 69°E) between 1963 and 2006 |
title_fullStr |
Ice wastage on the Kerguelen Islands (49°S, 69°E) between 1963 and 2006 |
title_full_unstemmed |
Ice wastage on the Kerguelen Islands (49°S, 69°E) between 1963 and 2006 |
title_sort |
ice wastage on the kerguelen islands (49°s, 69°e) between 1963 and 2006 |
publisher |
HAL CCSD |
publishDate |
2009 |
url |
https://hal.science/hal-00406745 https://hal.science/hal-00406745/document https://hal.science/hal-00406745/file/Berthier_et_al_JGR_2009.pdf https://doi.org/10.1029/2008JF001192 |
geographic |
Heard Island Indian Kerguelen Kerguelen Islands Patagonia Southern Ocean |
geographic_facet |
Heard Island Indian Kerguelen Kerguelen Islands Patagonia Southern Ocean |
genre |
Heard Island Ice cap Kerguelen Islands Southern Ocean |
genre_facet |
Heard Island Ice cap Kerguelen Islands Southern Ocean |
op_source |
ISSN: 0148-0227 EISSN: 2156-2202 Journal of Geophysical Research https://hal.science/hal-00406745 Journal of Geophysical Research, 2009, 114, pp.F03005. ⟨10.1029/2008JF001192⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1029/2008JF001192 hal-00406745 https://hal.science/hal-00406745 https://hal.science/hal-00406745/document https://hal.science/hal-00406745/file/Berthier_et_al_JGR_2009.pdf doi:10.1029/2008JF001192 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1029/2008JF001192 |
container_title |
Journal of Geophysical Research |
container_volume |
114 |
container_issue |
F3 |
_version_ |
1785584536129634304 |