New modeling of the Vostok ice flow line and implication for the glaciological chronology of the Vostok ice core
International audience We have used new spaceborne (elevation) and airborne (ice thickness) data to constrain a 2D1/2 model of snow accumulation and ice flow along the Ridge B‐Vostok station ice flow line (East Antarctica). We show that new evaluations of the ice flow line geometry (from the surface...
Published in: | Journal of Geophysical Research |
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Main Authors: | , , , , |
Other Authors: | , , , , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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HAL CCSD
2004
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Online Access: | https://hal.science/hal-03109780 https://hal.science/hal-03109780/document https://hal.science/hal-03109780/file/NEW.pdf https://doi.org/10.1029/2004JD004561 |
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Université Savoie Mont Blanc: HAL |
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English |
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Publisher's PDF also known as Version of record 1827 Hydrology: Glaciology (1863) 3344 Meteorology and Atmospheric Dynamics: Paleoclimatology 3260 Mathematical Geophysics: Inverse theory 9310 Information Related to Geographic Region: Antarctica glaciology paleoclimatology Antarctica inverse theory [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment |
spellingShingle |
Publisher's PDF also known as Version of record 1827 Hydrology: Glaciology (1863) 3344 Meteorology and Atmospheric Dynamics: Paleoclimatology 3260 Mathematical Geophysics: Inverse theory 9310 Information Related to Geographic Region: Antarctica glaciology paleoclimatology Antarctica inverse theory [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment Parrenin, F. Rémy, Florence Ritz, C. Siegert, M.J. Jouzel, J. New modeling of the Vostok ice flow line and implication for the glaciological chronology of the Vostok ice core |
topic_facet |
Publisher's PDF also known as Version of record 1827 Hydrology: Glaciology (1863) 3344 Meteorology and Atmospheric Dynamics: Paleoclimatology 3260 Mathematical Geophysics: Inverse theory 9310 Information Related to Geographic Region: Antarctica glaciology paleoclimatology Antarctica inverse theory [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment |
description |
International audience We have used new spaceborne (elevation) and airborne (ice thickness) data to constrain a 2D1/2 model of snow accumulation and ice flow along the Ridge B‐Vostok station ice flow line (East Antarctica). We show that new evaluations of the ice flow line geometry (from the surface elevation), ice thickness (from low‐frequency radar data), and basal melting and sliding change significantly the chronology of the Vostok ice core. This new Vostok dating model reconciles orbital and glaciological timescales and is in good agreement with the Dome Fuji glaciological timescale. At the same time, the new model shows significantly older ages than the previous GT4 timescale for the last glacial part, being thus in better agreement with the GRIP and GISP2 chronologies. |
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) Laboratoire de glaciologie et géophysique de l'environnement (LGGE) Observatoire des Sciences de l'Univers de Grenoble (OSUG) Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut national des sciences de l'Univers (INSU - CNRS)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Savoie Mont Blanc (USMB Université de Savoie Université de Chambéry )-Centre National de la Recherche Scientifique (CNRS)-Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut national des sciences de l'Univers (INSU - CNRS)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Savoie Mont Blanc (USMB Université de Savoie Université de Chambéry )-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS) Bristol Glaciology Centre School of Geographical Sciences Laboratoire des Sciences du Climat et de l'Environnement Gif-sur-Yvette (LSCE) Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Direction de Recherche Fondamentale (CEA) (DRF (CEA)) Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA) Glaces et Continents, Climats et Isotopes Stables (GLACCIOS) Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Direction de Recherche Fondamentale (CEA) (DRF (CEA)) |
format |
Article in Journal/Newspaper |
author |
Parrenin, F. Rémy, Florence Ritz, C. Siegert, M.J. Jouzel, J. |
author_facet |
Parrenin, F. Rémy, Florence Ritz, C. Siegert, M.J. Jouzel, J. |
author_sort |
Parrenin, F. |
title |
New modeling of the Vostok ice flow line and implication for the glaciological chronology of the Vostok ice core |
title_short |
New modeling of the Vostok ice flow line and implication for the glaciological chronology of the Vostok ice core |
title_full |
New modeling of the Vostok ice flow line and implication for the glaciological chronology of the Vostok ice core |
title_fullStr |
New modeling of the Vostok ice flow line and implication for the glaciological chronology of the Vostok ice core |
title_full_unstemmed |
New modeling of the Vostok ice flow line and implication for the glaciological chronology of the Vostok ice core |
title_sort |
new modeling of the vostok ice flow line and implication for the glaciological chronology of the vostok ice core |
publisher |
HAL CCSD |
publishDate |
2004 |
url |
https://hal.science/hal-03109780 https://hal.science/hal-03109780/document https://hal.science/hal-03109780/file/NEW.pdf https://doi.org/10.1029/2004JD004561 |
genre |
Antarc* Antarctica East Antarctica ice core |
genre_facet |
Antarc* Antarctica East Antarctica ice core |
op_source |
ISSN: 0148-0227 EISSN: 2156-2202 Journal of Geophysical Research https://hal.science/hal-03109780 Journal of Geophysical Research, 2004, 109 (D20), ⟨10.1029/2004JD004561⟩ |
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info:eu-repo/semantics/altIdentifier/doi/10.1029/2004JD004561 hal-03109780 https://hal.science/hal-03109780 https://hal.science/hal-03109780/document https://hal.science/hal-03109780/file/NEW.pdf doi:10.1029/2004JD004561 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1029/2004JD004561 |
container_title |
Journal of Geophysical Research |
container_volume |
109 |
container_issue |
D20 |
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1810492700501213184 |
spelling |
ftunivsavoie:oai:HAL:hal-03109780v1 2024-09-15T17:45:00+00:00 New modeling of the Vostok ice flow line and implication for the glaciological chronology of the Vostok ice core Parrenin, F. Rémy, Florence Ritz, C. Siegert, M.J. Jouzel, J. 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) Laboratoire de glaciologie et géophysique de l'environnement (LGGE) Observatoire des Sciences de l'Univers de Grenoble (OSUG) Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut national des sciences de l'Univers (INSU - CNRS)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Savoie Mont Blanc (USMB Université de Savoie Université de Chambéry )-Centre National de la Recherche Scientifique (CNRS)-Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut national des sciences de l'Univers (INSU - CNRS)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Savoie Mont Blanc (USMB Université de Savoie Université de Chambéry )-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS) Bristol Glaciology Centre School of Geographical Sciences Laboratoire des Sciences du Climat et de l'Environnement Gif-sur-Yvette (LSCE) Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Direction de Recherche Fondamentale (CEA) (DRF (CEA)) Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA) Glaces et Continents, Climats et Isotopes Stables (GLACCIOS) Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Direction de Recherche Fondamentale (CEA) (DRF (CEA)) 2004 https://hal.science/hal-03109780 https://hal.science/hal-03109780/document https://hal.science/hal-03109780/file/NEW.pdf https://doi.org/10.1029/2004JD004561 en eng HAL CCSD American Geophysical Union info:eu-repo/semantics/altIdentifier/doi/10.1029/2004JD004561 hal-03109780 https://hal.science/hal-03109780 https://hal.science/hal-03109780/document https://hal.science/hal-03109780/file/NEW.pdf doi:10.1029/2004JD004561 info:eu-repo/semantics/OpenAccess ISSN: 0148-0227 EISSN: 2156-2202 Journal of Geophysical Research https://hal.science/hal-03109780 Journal of Geophysical Research, 2004, 109 (D20), ⟨10.1029/2004JD004561⟩ Publisher's PDF also known as Version of record 1827 Hydrology: Glaciology (1863) 3344 Meteorology and Atmospheric Dynamics: Paleoclimatology 3260 Mathematical Geophysics: Inverse theory 9310 Information Related to Geographic Region: Antarctica glaciology paleoclimatology Antarctica inverse theory [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment info:eu-repo/semantics/article Journal articles 2004 ftunivsavoie https://doi.org/10.1029/2004JD004561 2024-06-24T23:55:55Z International audience We have used new spaceborne (elevation) and airborne (ice thickness) data to constrain a 2D1/2 model of snow accumulation and ice flow along the Ridge B‐Vostok station ice flow line (East Antarctica). We show that new evaluations of the ice flow line geometry (from the surface elevation), ice thickness (from low‐frequency radar data), and basal melting and sliding change significantly the chronology of the Vostok ice core. This new Vostok dating model reconciles orbital and glaciological timescales and is in good agreement with the Dome Fuji glaciological timescale. At the same time, the new model shows significantly older ages than the previous GT4 timescale for the last glacial part, being thus in better agreement with the GRIP and GISP2 chronologies. Article in Journal/Newspaper Antarc* Antarctica East Antarctica ice core Université Savoie Mont Blanc: HAL Journal of Geophysical Research 109 D20 |