Aeolian dust in East Antarctica (EPICA-Dome C and Vostok): Provenance during glacial ages over the last 800 kyr
International audience Aeolian mineral dust archived in Antarctic ice cores represents a key proxy for Quaternary climate evolution. The longest and most detailed dust and climate sequences from polar ice are provided today by the Vostok and by the EPICA-Dome C (EDC) ice cores. Here we investigate t...
Published in: | Geophysical Research Letters |
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Main Authors: | , , , , , , |
Other Authors: | , , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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HAL CCSD
2008
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Online Access: | https://insu.hal.science/insu-00378332 https://insu.hal.science/insu-00378332/document https://insu.hal.science/insu-00378332/file/2008GL033382.pdf https://doi.org/10.1029/2008GL033382 |
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ftunigrenoble:oai:HAL:insu-00378332v1 |
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openpolar |
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Open Polar |
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Université Grenoble Alpes: HAL |
op_collection_id |
ftunigrenoble |
language |
English |
topic |
Antarctica dust Sr Nd isotopes [SDU.STU.GL]Sciences of the Universe [physics]/Earth Sciences/Glaciology |
spellingShingle |
Antarctica dust Sr Nd isotopes [SDU.STU.GL]Sciences of the Universe [physics]/Earth Sciences/Glaciology Delmonte, Barbara Andersson, P. S. Hansson, Margareta Schöberg, H. Petit, Jean-Robert Basile-Doelsch, Isabelle Maggi, V. Aeolian dust in East Antarctica (EPICA-Dome C and Vostok): Provenance during glacial ages over the last 800 kyr |
topic_facet |
Antarctica dust Sr Nd isotopes [SDU.STU.GL]Sciences of the Universe [physics]/Earth Sciences/Glaciology |
description |
International audience Aeolian mineral dust archived in Antarctic ice cores represents a key proxy for Quaternary climate evolution. The longest and most detailed dust and climate sequences from polar ice are provided today by the Vostok and by the EPICA-Dome C (EDC) ice cores. Here we investigate the geographic provenance of dust windborne to East Antarctica during Early and Middle Pleistocene glacial ages using strontium and neodymium isotopes as tracers. The isotopic signature of Antarctic dust points towards a dominant South American origin during Marine Isotopic Stage (MIS) 8, 10, 12, and back to MIS 16 and 20 as deduced from EDC core. Data provide evidence for a persistent overall westerly circulation pattern allowing efficient transfer of dust from South America to the interior of Antarctica over the last 800 kyr. Some small but significant dissimilarity between old and recent glacial ages suggests a slightly reduced Patagonian contribution during ancient glaciations. |
author2 |
Dipartimento di Scienze dell'Ambiente e del Territorio (DISAT) Università degli Studi di Milano = University of Milan (UNIMI) Laboratory for Isotope Geology Swedish Museum of Natural History (NRM) Department of Physical Geography and Quaternary Geology Stockholm University 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) Centre Européen de Recherche et d'Enseignement des Géosciences de l'Environnement (CEREGE) Institut de Recherche pour le Développement (IRD)-Institut National de la Recherche Agronomique (INRA)-Aix Marseille Université (AMU)-Collège de France (CdF (institution))-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS) European Project for Ice Coring in Antarctica (EPICA) |
format |
Article in Journal/Newspaper |
author |
Delmonte, Barbara Andersson, P. S. Hansson, Margareta Schöberg, H. Petit, Jean-Robert Basile-Doelsch, Isabelle Maggi, V. |
author_facet |
Delmonte, Barbara Andersson, P. S. Hansson, Margareta Schöberg, H. Petit, Jean-Robert Basile-Doelsch, Isabelle Maggi, V. |
author_sort |
Delmonte, Barbara |
title |
Aeolian dust in East Antarctica (EPICA-Dome C and Vostok): Provenance during glacial ages over the last 800 kyr |
title_short |
Aeolian dust in East Antarctica (EPICA-Dome C and Vostok): Provenance during glacial ages over the last 800 kyr |
title_full |
Aeolian dust in East Antarctica (EPICA-Dome C and Vostok): Provenance during glacial ages over the last 800 kyr |
title_fullStr |
Aeolian dust in East Antarctica (EPICA-Dome C and Vostok): Provenance during glacial ages over the last 800 kyr |
title_full_unstemmed |
Aeolian dust in East Antarctica (EPICA-Dome C and Vostok): Provenance during glacial ages over the last 800 kyr |
title_sort |
aeolian dust in east antarctica (epica-dome c and vostok): provenance during glacial ages over the last 800 kyr |
publisher |
HAL CCSD |
publishDate |
2008 |
url |
https://insu.hal.science/insu-00378332 https://insu.hal.science/insu-00378332/document https://insu.hal.science/insu-00378332/file/2008GL033382.pdf https://doi.org/10.1029/2008GL033382 |
geographic |
Antarctic East Antarctica |
geographic_facet |
Antarctic East Antarctica |
genre |
Antarc* Antarctic Antarctica East Antarctica EPICA |
genre_facet |
Antarc* Antarctic Antarctica East Antarctica EPICA |
op_source |
ISSN: 0094-8276 EISSN: 1944-8007 Geophysical Research Letters https://insu.hal.science/insu-00378332 Geophysical Research Letters, 2008, 35 (L07703), 1 à 6 p. ⟨10.1029/2008GL033382⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1029/2008GL033382 insu-00378332 https://insu.hal.science/insu-00378332 https://insu.hal.science/insu-00378332/document https://insu.hal.science/insu-00378332/file/2008GL033382.pdf doi:10.1029/2008GL033382 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1029/2008GL033382 |
container_title |
Geophysical Research Letters |
container_volume |
35 |
container_issue |
7 |
container_start_page |
n/a |
op_container_end_page |
n/a |
_version_ |
1802651557625331712 |
spelling |
ftunigrenoble:oai:HAL:insu-00378332v1 2024-06-23T07:47:27+00:00 Aeolian dust in East Antarctica (EPICA-Dome C and Vostok): Provenance during glacial ages over the last 800 kyr Delmonte, Barbara Andersson, P. S. Hansson, Margareta Schöberg, H. Petit, Jean-Robert Basile-Doelsch, Isabelle Maggi, V. Dipartimento di Scienze dell'Ambiente e del Territorio (DISAT) Università degli Studi di Milano = University of Milan (UNIMI) Laboratory for Isotope Geology Swedish Museum of Natural History (NRM) Department of Physical Geography and Quaternary Geology Stockholm University 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) Centre Européen de Recherche et d'Enseignement des Géosciences de l'Environnement (CEREGE) Institut de Recherche pour le Développement (IRD)-Institut National de la Recherche Agronomique (INRA)-Aix Marseille Université (AMU)-Collège de France (CdF (institution))-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS) European Project for Ice Coring in Antarctica (EPICA) 2008 https://insu.hal.science/insu-00378332 https://insu.hal.science/insu-00378332/document https://insu.hal.science/insu-00378332/file/2008GL033382.pdf https://doi.org/10.1029/2008GL033382 en eng HAL CCSD American Geophysical Union info:eu-repo/semantics/altIdentifier/doi/10.1029/2008GL033382 insu-00378332 https://insu.hal.science/insu-00378332 https://insu.hal.science/insu-00378332/document https://insu.hal.science/insu-00378332/file/2008GL033382.pdf doi:10.1029/2008GL033382 info:eu-repo/semantics/OpenAccess ISSN: 0094-8276 EISSN: 1944-8007 Geophysical Research Letters https://insu.hal.science/insu-00378332 Geophysical Research Letters, 2008, 35 (L07703), 1 à 6 p. ⟨10.1029/2008GL033382⟩ Antarctica dust Sr Nd isotopes [SDU.STU.GL]Sciences of the Universe [physics]/Earth Sciences/Glaciology info:eu-repo/semantics/article Journal articles 2008 ftunigrenoble https://doi.org/10.1029/2008GL033382 2024-06-11T14:33:34Z International audience Aeolian mineral dust archived in Antarctic ice cores represents a key proxy for Quaternary climate evolution. The longest and most detailed dust and climate sequences from polar ice are provided today by the Vostok and by the EPICA-Dome C (EDC) ice cores. Here we investigate the geographic provenance of dust windborne to East Antarctica during Early and Middle Pleistocene glacial ages using strontium and neodymium isotopes as tracers. The isotopic signature of Antarctic dust points towards a dominant South American origin during Marine Isotopic Stage (MIS) 8, 10, 12, and back to MIS 16 and 20 as deduced from EDC core. Data provide evidence for a persistent overall westerly circulation pattern allowing efficient transfer of dust from South America to the interior of Antarctica over the last 800 kyr. Some small but significant dissimilarity between old and recent glacial ages suggests a slightly reduced Patagonian contribution during ancient glaciations. Article in Journal/Newspaper Antarc* Antarctic Antarctica East Antarctica EPICA Université Grenoble Alpes: HAL Antarctic East Antarctica Geophysical Research Letters 35 7 n/a n/a |