Patagonian origin of glacial dust deposited in East Antarctica (Vostok and Dome C) during glacial stages 2, 4 and 6
The source area of continental dust deposited at both Vostok and Dome C sites (East Antarctica) during the glacial stages (stage 2: similar to 18 ka (Last Glacial Maximum), stage 4: similar to 60 ka and stage 6: similar to 160 ka) of the last two climatic cycles has remained constant. The isotopic c...
Published in: | Earth and Planetary Science Letters |
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ftinsu:oai:HAL:hal-00756606v1 2024-04-28T08:02:18+00:00 Patagonian origin of glacial dust deposited in East Antarctica (Vostok and Dome C) during glacial stages 2, 4 and 6 Basile-Doelsch, Isabelle Grousset, Fe Revel, Michel Petit, Jr Biscaye, Pe Barkov, Ni 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) 1997 https://hal.science/hal-00756606 https://doi.org/10.1016/s0012-821x(96)00255-5 en eng HAL CCSD Elsevier info:eu-repo/semantics/altIdentifier/doi/10.1016/s0012-821x(96)00255-5 hal-00756606 https://hal.science/hal-00756606 doi:10.1016/s0012-821x(96)00255-5 ISSN: 0012-821X Earth and Planetary Science Letters https://hal.science/hal-00756606 Earth and Planetary Science Letters, 1997, 146 (3-4), pp.573-589. ⟨10.1016/s0012-821x(96)00255-5⟩ Antarctica ice-cores dust aerosols radioactive isotopes Patagonia ICE-AGE CONDITIONS 0012-821X [SDU.STU.GL]Sciences of the Universe [physics]/Earth Sciences/Glaciology info:eu-repo/semantics/article Journal articles 1997 ftinsu https://doi.org/10.1016/s0012-821x(96)00255-5 2024-04-05T00:21:12Z The source area of continental dust deposited at both Vostok and Dome C sites (East Antarctica) during the glacial stages (stage 2: similar to 18 ka (Last Glacial Maximum), stage 4: similar to 60 ka and stage 6: similar to 160 ka) of the last two climatic cycles has remained constant. The isotopic composition (Sr-87/Sr-86 and Nd-143/Nd-114) of the ice-core dust has been compared with the isotopic composition of the potential source areas: Antarctica, New Zealand, Southern Africa, Australia and South America. This comparison reveals the southern South American provenance of the dust for all three glacial periods, as has already been shown for the LGM [1], We show that the Patagonian loess and the marine shelf sediments from the Argentine continental shelf, which was variably emerged during glacial periods, display different isotopic compositions and that the composition of the Patagonian loess best matches the signature of the ice-core dust, The identification of the Patagonian region as the source of the windblown dust deposited over East Antarctica during all the latest glacial periods permits a better understanding of paleo-atmospheric circulations of the last climatic cycles and a better constraint on the parametrization of dust sources for paleoatmospheric general circulation models. Article in Journal/Newspaper Antarc* Antarctica Antarctica New Zealand East Antarctica ice core Institut national des sciences de l'Univers: HAL-INSU Earth and Planetary Science Letters 146 3-4 573 589 |
institution |
Open Polar |
collection |
Institut national des sciences de l'Univers: HAL-INSU |
op_collection_id |
ftinsu |
language |
English |
topic |
Antarctica ice-cores dust aerosols radioactive isotopes Patagonia ICE-AGE CONDITIONS 0012-821X [SDU.STU.GL]Sciences of the Universe [physics]/Earth Sciences/Glaciology |
spellingShingle |
Antarctica ice-cores dust aerosols radioactive isotopes Patagonia ICE-AGE CONDITIONS 0012-821X [SDU.STU.GL]Sciences of the Universe [physics]/Earth Sciences/Glaciology Basile-Doelsch, Isabelle Grousset, Fe Revel, Michel Petit, Jr Biscaye, Pe Barkov, Ni Patagonian origin of glacial dust deposited in East Antarctica (Vostok and Dome C) during glacial stages 2, 4 and 6 |
topic_facet |
Antarctica ice-cores dust aerosols radioactive isotopes Patagonia ICE-AGE CONDITIONS 0012-821X [SDU.STU.GL]Sciences of the Universe [physics]/Earth Sciences/Glaciology |
description |
The source area of continental dust deposited at both Vostok and Dome C sites (East Antarctica) during the glacial stages (stage 2: similar to 18 ka (Last Glacial Maximum), stage 4: similar to 60 ka and stage 6: similar to 160 ka) of the last two climatic cycles has remained constant. The isotopic composition (Sr-87/Sr-86 and Nd-143/Nd-114) of the ice-core dust has been compared with the isotopic composition of the potential source areas: Antarctica, New Zealand, Southern Africa, Australia and South America. This comparison reveals the southern South American provenance of the dust for all three glacial periods, as has already been shown for the LGM [1], We show that the Patagonian loess and the marine shelf sediments from the Argentine continental shelf, which was variably emerged during glacial periods, display different isotopic compositions and that the composition of the Patagonian loess best matches the signature of the ice-core dust, The identification of the Patagonian region as the source of the windblown dust deposited over East Antarctica during all the latest glacial periods permits a better understanding of paleo-atmospheric circulations of the last climatic cycles and a better constraint on the parametrization of dust sources for paleoatmospheric general circulation models. |
author2 |
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) |
format |
Article in Journal/Newspaper |
author |
Basile-Doelsch, Isabelle Grousset, Fe Revel, Michel Petit, Jr Biscaye, Pe Barkov, Ni |
author_facet |
Basile-Doelsch, Isabelle Grousset, Fe Revel, Michel Petit, Jr Biscaye, Pe Barkov, Ni |
author_sort |
Basile-Doelsch, Isabelle |
title |
Patagonian origin of glacial dust deposited in East Antarctica (Vostok and Dome C) during glacial stages 2, 4 and 6 |
title_short |
Patagonian origin of glacial dust deposited in East Antarctica (Vostok and Dome C) during glacial stages 2, 4 and 6 |
title_full |
Patagonian origin of glacial dust deposited in East Antarctica (Vostok and Dome C) during glacial stages 2, 4 and 6 |
title_fullStr |
Patagonian origin of glacial dust deposited in East Antarctica (Vostok and Dome C) during glacial stages 2, 4 and 6 |
title_full_unstemmed |
Patagonian origin of glacial dust deposited in East Antarctica (Vostok and Dome C) during glacial stages 2, 4 and 6 |
title_sort |
patagonian origin of glacial dust deposited in east antarctica (vostok and dome c) during glacial stages 2, 4 and 6 |
publisher |
HAL CCSD |
publishDate |
1997 |
url |
https://hal.science/hal-00756606 https://doi.org/10.1016/s0012-821x(96)00255-5 |
genre |
Antarc* Antarctica Antarctica New Zealand East Antarctica ice core |
genre_facet |
Antarc* Antarctica Antarctica New Zealand East Antarctica ice core |
op_source |
ISSN: 0012-821X Earth and Planetary Science Letters https://hal.science/hal-00756606 Earth and Planetary Science Letters, 1997, 146 (3-4), pp.573-589. ⟨10.1016/s0012-821x(96)00255-5⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1016/s0012-821x(96)00255-5 hal-00756606 https://hal.science/hal-00756606 doi:10.1016/s0012-821x(96)00255-5 |
op_doi |
https://doi.org/10.1016/s0012-821x(96)00255-5 |
container_title |
Earth and Planetary Science Letters |
container_volume |
146 |
container_issue |
3-4 |
container_start_page |
573 |
op_container_end_page |
589 |
_version_ |
1797573696587563008 |