A 220 kyr record of Pb isotopes at Dome C Antarctica from analyses of the EPICA ice core
International audience Pb isotopic compositions and Pb and Ba concentrations are reported in EPICA Dome C ice core samples dating to 220 kyr BP, indicating that Pb isotopic compositions in Antarctic ice vary with changing climate. 206Pb/207Pb ratios decrease during glacial periods, with the lowest v...
Published in: | Geophysical Research Letters |
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Format: | Article in Journal/Newspaper |
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Online Access: | https://insu.hal.science/insu-00374946 https://insu.hal.science/insu-00374946/document https://insu.hal.science/insu-00374946/file/2004GL021449.pdf https://doi.org/10.1029/2004GL021449 |
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ftunigrenoble:oai:HAL:insu-00374946v1 2024-05-12T07:54:40+00:00 A 220 kyr record of Pb isotopes at Dome C Antarctica from analyses of the EPICA ice core Vallelonga, P. Gabrielli, Paolo Rosman, K. J. R. Barbante, Carlo Boutron, Claude, F. Department of Applied Physics Curtin 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) Environmental Sciences Department University of Ca’ Foscari Venice, Italy Institute for the Dynamics of Environmental Processes-CNR 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) European Project for Ice Coring in Antarctica (EPICA) 2005 https://insu.hal.science/insu-00374946 https://insu.hal.science/insu-00374946/document https://insu.hal.science/insu-00374946/file/2004GL021449.pdf https://doi.org/10.1029/2004GL021449 en eng HAL CCSD American Geophysical Union info:eu-repo/semantics/altIdentifier/doi/10.1029/2004GL021449 insu-00374946 https://insu.hal.science/insu-00374946 https://insu.hal.science/insu-00374946/document https://insu.hal.science/insu-00374946/file/2004GL021449.pdf doi:10.1029/2004GL021449 info:eu-repo/semantics/OpenAccess ISSN: 0094-8276 EISSN: 1944-8007 Geophysical Research Letters https://insu.hal.science/insu-00374946 Geophysical Research Letters, 2005, 32 (L01706), 1 à 4 p. ⟨10.1029/2004GL021449⟩ [SDU.STU.GL]Sciences of the Universe [physics]/Earth Sciences/Glaciology info:eu-repo/semantics/article Journal articles 2005 ftunigrenoble https://doi.org/10.1029/2004GL021449 2024-04-18T03:21:58Z International audience Pb isotopic compositions and Pb and Ba concentrations are reported in EPICA Dome C ice core samples dating to 220 kyr BP, indicating that Pb isotopic compositions in Antarctic ice vary with changing climate. 206Pb/207Pb ratios decrease during glacial periods, with the lowest values occurring during colder climatic periods (stages 2, 4 and 6) and the Holocene. Low Pb concentrations (<1 pg/g) were found during the Holocene and the last interglacial (climate stage 5.5) while higher Pb concentrations (>10 pg/g) were found during cold climatic periods. Ba, a proxy for mineral dust, was used to determine that dust usually accounts for ∼70% of Pb in Dome C ice, while the remaining ∼30% was attributed to volcanic emissions. Pb isotopic compositions at Dome C differ from those reported in pre-industrial ice from other Antarctic locations, due to greater proportions of dust Pb at Dome C. Article in Journal/Newspaper Antarc* Antarctic Antarctica EPICA ice core Université Grenoble Alpes: HAL Antarctic Geophysical Research Letters 32 1 |
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Open Polar |
collection |
Université Grenoble Alpes: HAL |
op_collection_id |
ftunigrenoble |
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 Vallelonga, P. Gabrielli, Paolo Rosman, K. J. R. Barbante, Carlo Boutron, Claude, F. A 220 kyr record of Pb isotopes at Dome C Antarctica from analyses of the EPICA ice core |
topic_facet |
[SDU.STU.GL]Sciences of the Universe [physics]/Earth Sciences/Glaciology |
description |
International audience Pb isotopic compositions and Pb and Ba concentrations are reported in EPICA Dome C ice core samples dating to 220 kyr BP, indicating that Pb isotopic compositions in Antarctic ice vary with changing climate. 206Pb/207Pb ratios decrease during glacial periods, with the lowest values occurring during colder climatic periods (stages 2, 4 and 6) and the Holocene. Low Pb concentrations (<1 pg/g) were found during the Holocene and the last interglacial (climate stage 5.5) while higher Pb concentrations (>10 pg/g) were found during cold climatic periods. Ba, a proxy for mineral dust, was used to determine that dust usually accounts for ∼70% of Pb in Dome C ice, while the remaining ∼30% was attributed to volcanic emissions. Pb isotopic compositions at Dome C differ from those reported in pre-industrial ice from other Antarctic locations, due to greater proportions of dust Pb at Dome C. |
author2 |
Department of Applied Physics Curtin 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) Environmental Sciences Department University of Ca’ Foscari Venice, Italy Institute for the Dynamics of Environmental Processes-CNR 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) European Project for Ice Coring in Antarctica (EPICA) |
format |
Article in Journal/Newspaper |
author |
Vallelonga, P. Gabrielli, Paolo Rosman, K. J. R. Barbante, Carlo Boutron, Claude, F. |
author_facet |
Vallelonga, P. Gabrielli, Paolo Rosman, K. J. R. Barbante, Carlo Boutron, Claude, F. |
author_sort |
Vallelonga, P. |
title |
A 220 kyr record of Pb isotopes at Dome C Antarctica from analyses of the EPICA ice core |
title_short |
A 220 kyr record of Pb isotopes at Dome C Antarctica from analyses of the EPICA ice core |
title_full |
A 220 kyr record of Pb isotopes at Dome C Antarctica from analyses of the EPICA ice core |
title_fullStr |
A 220 kyr record of Pb isotopes at Dome C Antarctica from analyses of the EPICA ice core |
title_full_unstemmed |
A 220 kyr record of Pb isotopes at Dome C Antarctica from analyses of the EPICA ice core |
title_sort |
220 kyr record of pb isotopes at dome c antarctica from analyses of the epica ice core |
publisher |
HAL CCSD |
publishDate |
2005 |
url |
https://insu.hal.science/insu-00374946 https://insu.hal.science/insu-00374946/document https://insu.hal.science/insu-00374946/file/2004GL021449.pdf https://doi.org/10.1029/2004GL021449 |
geographic |
Antarctic |
geographic_facet |
Antarctic |
genre |
Antarc* Antarctic Antarctica EPICA ice core |
genre_facet |
Antarc* Antarctic Antarctica EPICA ice core |
op_source |
ISSN: 0094-8276 EISSN: 1944-8007 Geophysical Research Letters https://insu.hal.science/insu-00374946 Geophysical Research Letters, 2005, 32 (L01706), 1 à 4 p. ⟨10.1029/2004GL021449⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1029/2004GL021449 insu-00374946 https://insu.hal.science/insu-00374946 https://insu.hal.science/insu-00374946/document https://insu.hal.science/insu-00374946/file/2004GL021449.pdf doi:10.1029/2004GL021449 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1029/2004GL021449 |
container_title |
Geophysical Research Letters |
container_volume |
32 |
container_issue |
1 |
_version_ |
1798851259242905600 |