Aeolian dust in East Antarctica (EPICA-Dome C and Vostok): Provenance during glacial ages over the last 800 kyr
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 provenanc...
Published in: | Geophysical Research Letters |
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Format: | Article in Journal/Newspaper |
Language: | English |
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American Geophysical Union
2008
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Online Access: | http://hdl.handle.net/10281/6594 https://doi.org/10.1029/2008GL033382 |
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ftunivmilanobic:oai:boa.unimib.it:10281/6594 2024-04-21T07:48:11+00:00 Aeolian dust in East Antarctica (EPICA-Dome C and Vostok): Provenance during glacial ages over the last 800 kyr DELMONTE, BARBARA MAGGI, VALTER Andersson, PS Hansson, M Schoberg, H Petit, JR Basile Doelsch, I Delmonte, B Andersson, P Hansson, M Schoberg, H Petit, J Basile Doelsch, I Maggi, V 2008 http://hdl.handle.net/10281/6594 https://doi.org/10.1029/2008GL033382 eng eng American Geophysical Union info:eu-repo/semantics/altIdentifier/wos/WOS:000255201300004 volume:35 issue:7 journal:GEOPHYSICAL RESEARCH LETTERS http://hdl.handle.net/10281/6594 doi:10.1029/2008GL033382 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-45549092782 ice cores dust Patagonia Antarctica GEO/04 - GEOGRAFIA FISICA E GEOMORFOLOGIA info:eu-repo/semantics/article 2008 ftunivmilanobic https://doi.org/10.1029/2008GL033382 2024-03-28T01:02:31Z 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. Copyright 2008 by the American Geophysical Union. Article in Journal/Newspaper Antarc* Antarctic Antarctica East Antarctica EPICA Università degli Studi di Milano-Bicocca: BOA (Bicocca Open Archive) Geophysical Research Letters 35 7 n/a n/a |
institution |
Open Polar |
collection |
Università degli Studi di Milano-Bicocca: BOA (Bicocca Open Archive) |
op_collection_id |
ftunivmilanobic |
language |
English |
topic |
ice cores dust Patagonia Antarctica GEO/04 - GEOGRAFIA FISICA E GEOMORFOLOGIA |
spellingShingle |
ice cores dust Patagonia Antarctica GEO/04 - GEOGRAFIA FISICA E GEOMORFOLOGIA DELMONTE, BARBARA MAGGI, VALTER Andersson, PS Hansson, M Schoberg, H Petit, JR Basile Doelsch, I Aeolian dust in East Antarctica (EPICA-Dome C and Vostok): Provenance during glacial ages over the last 800 kyr |
topic_facet |
ice cores dust Patagonia Antarctica GEO/04 - GEOGRAFIA FISICA E GEOMORFOLOGIA |
description |
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. Copyright 2008 by the American Geophysical Union. |
author2 |
Delmonte, B Andersson, P Hansson, M Schoberg, H Petit, J Basile Doelsch, I Maggi, V |
format |
Article in Journal/Newspaper |
author |
DELMONTE, BARBARA MAGGI, VALTER Andersson, PS Hansson, M Schoberg, H Petit, JR Basile Doelsch, I |
author_facet |
DELMONTE, BARBARA MAGGI, VALTER Andersson, PS Hansson, M Schoberg, H Petit, JR Basile Doelsch, I |
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 |
American Geophysical Union |
publishDate |
2008 |
url |
http://hdl.handle.net/10281/6594 https://doi.org/10.1029/2008GL033382 |
genre |
Antarc* Antarctic Antarctica East Antarctica EPICA |
genre_facet |
Antarc* Antarctic Antarctica East Antarctica EPICA |
op_relation |
info:eu-repo/semantics/altIdentifier/wos/WOS:000255201300004 volume:35 issue:7 journal:GEOPHYSICAL RESEARCH LETTERS http://hdl.handle.net/10281/6594 doi:10.1029/2008GL033382 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-45549092782 |
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_ |
1796948380818079744 |