Sustained retreat of the Pine Island Glacier
International audience We use satellite observations to show that, between 1992 and 2011, the Pine Island Glacier hinge line retreated at a rate of 0.95 ± 0.09 km yr−1 despite a progressive steepening and shoaling of the glacier surface and bedrock slopes, respectively, which ought to impede retreat...
Published in: | Geophysical Research Letters |
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Online Access: | https://doi.org/10.1002/grl.50379 https://hal.archives-ouvertes.fr/hal-00856384/file/grl.50379.pdf https://hal.archives-ouvertes.fr/hal-00856384 |
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fttriple:oai:gotriple.eu:10670/1.6ht3wl 2023-05-15T13:44:32+02:00 Sustained retreat of the Pine Island Glacier Park, J. W. Gourmelen, N. Shepherd, A. Kim, S. W. Vaughan, D. G. Wingham, D. J. Yonsei University Dynamique globale et déformation active (IPGS) (IPGS-DGDA) Institut de physique du globe de Strasbourg (IPGS) Université de Strasbourg (UNISTRA)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS) Institute for Climate and Atmospheric Science Leeds (ICAS) School of Earth and Environment Leeds (SEE) University of Leeds-University of Leeds Sejong University British Antarctic Survey (BAS) Natural Environment Research Council (NERC) University College of London London (UCL) 2013-01-01 https://doi.org/10.1002/grl.50379 https://hal.archives-ouvertes.fr/hal-00856384/file/grl.50379.pdf https://hal.archives-ouvertes.fr/hal-00856384 en eng HAL CCSD American Geophysical Union hal-00856384 doi:10.1002/grl.50379 10670/1.6ht3wl https://hal.archives-ouvertes.fr/hal-00856384/file/grl.50379.pdf https://hal.archives-ouvertes.fr/hal-00856384 other Hyper Article en Ligne - Sciences de l'Homme et de la Société ISSN: 0094-8276 EISSN: 1944-8007 Geophysical Research Letters Geophysical Research Letters, American Geophysical Union, 2013, 40 (10), pp.2137--2142. ⟨10.1002/grl.50379⟩ Antarctica InSAR envir geo Journal Article https://vocabularies.coar-repositories.org/resource_types/c_6501/ 2013 fttriple https://doi.org/10.1002/grl.50379 2023-01-22T18:38:33Z International audience We use satellite observations to show that, between 1992 and 2011, the Pine Island Glacier hinge line retreated at a rate of 0.95 ± 0.09 km yr−1 despite a progressive steepening and shoaling of the glacier surface and bedrock slopes, respectively, which ought to impede retreat. The retreat has remained constant because the glacier terminus has thinned at an accelerating rate of 0.53 ± 0.15 m yr−2, with comparable changes upstream. This acceleration is consistent with an intensification of ocean-driven melting in the cavity beneath the floating section of the glacier. The pattern of hinge-line retreat meanders and is concentrated in isolated regions until ice becomes locally buoyant. Because the glacier-ocean system does not appear to have reached a position of relative stability, the lower limit of sea level projections may be too conservative. Article in Journal/Newspaper Antarc* Antarctica Pine Island Pine Island Glacier Unknown Pine Island Glacier ENVELOPE(-101.000,-101.000,-75.000,-75.000) Geophysical Research Letters 40 10 2137 2142 |
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Open Polar |
collection |
Unknown |
op_collection_id |
fttriple |
language |
English |
topic |
Antarctica InSAR envir geo |
spellingShingle |
Antarctica InSAR envir geo Park, J. W. Gourmelen, N. Shepherd, A. Kim, S. W. Vaughan, D. G. Wingham, D. J. Sustained retreat of the Pine Island Glacier |
topic_facet |
Antarctica InSAR envir geo |
description |
International audience We use satellite observations to show that, between 1992 and 2011, the Pine Island Glacier hinge line retreated at a rate of 0.95 ± 0.09 km yr−1 despite a progressive steepening and shoaling of the glacier surface and bedrock slopes, respectively, which ought to impede retreat. The retreat has remained constant because the glacier terminus has thinned at an accelerating rate of 0.53 ± 0.15 m yr−2, with comparable changes upstream. This acceleration is consistent with an intensification of ocean-driven melting in the cavity beneath the floating section of the glacier. The pattern of hinge-line retreat meanders and is concentrated in isolated regions until ice becomes locally buoyant. Because the glacier-ocean system does not appear to have reached a position of relative stability, the lower limit of sea level projections may be too conservative. |
author2 |
Yonsei University Dynamique globale et déformation active (IPGS) (IPGS-DGDA) Institut de physique du globe de Strasbourg (IPGS) Université de Strasbourg (UNISTRA)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS) Institute for Climate and Atmospheric Science Leeds (ICAS) School of Earth and Environment Leeds (SEE) University of Leeds-University of Leeds Sejong University British Antarctic Survey (BAS) Natural Environment Research Council (NERC) University College of London London (UCL) |
format |
Article in Journal/Newspaper |
author |
Park, J. W. Gourmelen, N. Shepherd, A. Kim, S. W. Vaughan, D. G. Wingham, D. J. |
author_facet |
Park, J. W. Gourmelen, N. Shepherd, A. Kim, S. W. Vaughan, D. G. Wingham, D. J. |
author_sort |
Park, J. W. |
title |
Sustained retreat of the Pine Island Glacier |
title_short |
Sustained retreat of the Pine Island Glacier |
title_full |
Sustained retreat of the Pine Island Glacier |
title_fullStr |
Sustained retreat of the Pine Island Glacier |
title_full_unstemmed |
Sustained retreat of the Pine Island Glacier |
title_sort |
sustained retreat of the pine island glacier |
publisher |
HAL CCSD |
publishDate |
2013 |
url |
https://doi.org/10.1002/grl.50379 https://hal.archives-ouvertes.fr/hal-00856384/file/grl.50379.pdf https://hal.archives-ouvertes.fr/hal-00856384 |
long_lat |
ENVELOPE(-101.000,-101.000,-75.000,-75.000) |
geographic |
Pine Island Glacier |
geographic_facet |
Pine Island Glacier |
genre |
Antarc* Antarctica Pine Island Pine Island Glacier |
genre_facet |
Antarc* Antarctica Pine Island Pine Island Glacier |
op_source |
Hyper Article en Ligne - Sciences de l'Homme et de la Société ISSN: 0094-8276 EISSN: 1944-8007 Geophysical Research Letters Geophysical Research Letters, American Geophysical Union, 2013, 40 (10), pp.2137--2142. ⟨10.1002/grl.50379⟩ |
op_relation |
hal-00856384 doi:10.1002/grl.50379 10670/1.6ht3wl https://hal.archives-ouvertes.fr/hal-00856384/file/grl.50379.pdf https://hal.archives-ouvertes.fr/hal-00856384 |
op_rights |
other |
op_doi |
https://doi.org/10.1002/grl.50379 |
container_title |
Geophysical Research Letters |
container_volume |
40 |
container_issue |
10 |
container_start_page |
2137 |
op_container_end_page |
2142 |
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1766202975978520576 |