Dust Transport to the Taylor Glacier, Antarctica, During the Last Interglacial
Changes in the composition of dust trapped in ice provide evidence of past atmospheric circulation and earth surface conditions. Investigations of dust provenance in Antarctic ice during glacial and interglacial periods indicate that South America is the primary dust source during both climate regim...
Published in: | Geophysical Research Letters |
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Online Access: | http://hdl.handle.net/10281/225437 https://doi.org/10.1029/2018GL081887 http://agupubs.onlinelibrary.wiley.com/hub/journal/10.1002/(ISSN)1944-8007/ |
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ftunivmilanobic:oai:boa.unimib.it:10281/225437 2024-04-07T07:47:01+00:00 Dust Transport to the Taylor Glacier, Antarctica, During the Last Interglacial Aarons, S. M. Aciego, S. M. McConnell, J. R. Delmonte, B. Baccolo, G. Aarons, S Aciego, S Mcconnell, J Delmonte, B Baccolo, G 2019 http://hdl.handle.net/10281/225437 https://doi.org/10.1029/2018GL081887 http://agupubs.onlinelibrary.wiley.com/hub/journal/10.1002/(ISSN)1944-8007/ eng eng Wiley-Blackwell Publishing, Inc. country:US info:eu-repo/semantics/altIdentifier/wos/WOS:000461855600040 volume:46 issue:4 firstpage:2261 lastpage:2270 numberofpages:10 journal:GEOPHYSICAL RESEARCH LETTERS http://hdl.handle.net/10281/225437 doi:10.1029/2018GL081887 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85062371427 http://agupubs.onlinelibrary.wiley.com/hub/journal/10.1002/(ISSN)1944-8007/ climate transition ice core last interglacial period mineral dust radiogenic isotope info:eu-repo/semantics/article 2019 ftunivmilanobic https://doi.org/10.1029/2018GL081887 2024-03-28T01:14:50Z Changes in the composition of dust trapped in ice provide evidence of past atmospheric circulation and earth surface conditions. Investigations of dust provenance in Antarctic ice during glacial and interglacial periods indicate that South America is the primary dust source during both climate regimes. Here, we present results from a new ice core dust archive extracted from the Taylor Glacier in coastal East Antarctica during the deglacial transition from Marine Isotope Stage 6 to 5e. Radiogenic strontium and neodymium isotopes indicate that last interglacial dust is young and volcanic, in contrast to the observed preindustrial and Holocene (Marine Isotope Stage 1) dust composition. The dust composition differences from the last interglacial and current interglacial period at the site require a profound difference in atmospheric transport and environmental conditions. We consider several potential causes for enhanced transport of volcanic material to the site, including increased availability of volcanic material and large-scale atmospheric circulation changes. Article in Journal/Newspaper Antarc* Antarctic Antarctica East Antarctica ice core Taylor Glacier Università degli Studi di Milano-Bicocca: BOA (Bicocca Open Archive) Antarctic East Antarctica Taylor Glacier ENVELOPE(162.167,162.167,-77.733,-77.733) Geophysical Research Letters 46 4 2261 2270 |
institution |
Open Polar |
collection |
Università degli Studi di Milano-Bicocca: BOA (Bicocca Open Archive) |
op_collection_id |
ftunivmilanobic |
language |
English |
topic |
climate transition ice core last interglacial period mineral dust radiogenic isotope |
spellingShingle |
climate transition ice core last interglacial period mineral dust radiogenic isotope Aarons, S. M. Aciego, S. M. McConnell, J. R. Delmonte, B. Baccolo, G. Dust Transport to the Taylor Glacier, Antarctica, During the Last Interglacial |
topic_facet |
climate transition ice core last interglacial period mineral dust radiogenic isotope |
description |
Changes in the composition of dust trapped in ice provide evidence of past atmospheric circulation and earth surface conditions. Investigations of dust provenance in Antarctic ice during glacial and interglacial periods indicate that South America is the primary dust source during both climate regimes. Here, we present results from a new ice core dust archive extracted from the Taylor Glacier in coastal East Antarctica during the deglacial transition from Marine Isotope Stage 6 to 5e. Radiogenic strontium and neodymium isotopes indicate that last interglacial dust is young and volcanic, in contrast to the observed preindustrial and Holocene (Marine Isotope Stage 1) dust composition. The dust composition differences from the last interglacial and current interglacial period at the site require a profound difference in atmospheric transport and environmental conditions. We consider several potential causes for enhanced transport of volcanic material to the site, including increased availability of volcanic material and large-scale atmospheric circulation changes. |
author2 |
Aarons, S Aciego, S Mcconnell, J Delmonte, B Baccolo, G |
format |
Article in Journal/Newspaper |
author |
Aarons, S. M. Aciego, S. M. McConnell, J. R. Delmonte, B. Baccolo, G. |
author_facet |
Aarons, S. M. Aciego, S. M. McConnell, J. R. Delmonte, B. Baccolo, G. |
author_sort |
Aarons, S. M. |
title |
Dust Transport to the Taylor Glacier, Antarctica, During the Last Interglacial |
title_short |
Dust Transport to the Taylor Glacier, Antarctica, During the Last Interglacial |
title_full |
Dust Transport to the Taylor Glacier, Antarctica, During the Last Interglacial |
title_fullStr |
Dust Transport to the Taylor Glacier, Antarctica, During the Last Interglacial |
title_full_unstemmed |
Dust Transport to the Taylor Glacier, Antarctica, During the Last Interglacial |
title_sort |
dust transport to the taylor glacier, antarctica, during the last interglacial |
publisher |
Wiley-Blackwell Publishing, Inc. |
publishDate |
2019 |
url |
http://hdl.handle.net/10281/225437 https://doi.org/10.1029/2018GL081887 http://agupubs.onlinelibrary.wiley.com/hub/journal/10.1002/(ISSN)1944-8007/ |
long_lat |
ENVELOPE(162.167,162.167,-77.733,-77.733) |
geographic |
Antarctic East Antarctica Taylor Glacier |
geographic_facet |
Antarctic East Antarctica Taylor Glacier |
genre |
Antarc* Antarctic Antarctica East Antarctica ice core Taylor Glacier |
genre_facet |
Antarc* Antarctic Antarctica East Antarctica ice core Taylor Glacier |
op_relation |
info:eu-repo/semantics/altIdentifier/wos/WOS:000461855600040 volume:46 issue:4 firstpage:2261 lastpage:2270 numberofpages:10 journal:GEOPHYSICAL RESEARCH LETTERS http://hdl.handle.net/10281/225437 doi:10.1029/2018GL081887 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85062371427 http://agupubs.onlinelibrary.wiley.com/hub/journal/10.1002/(ISSN)1944-8007/ |
op_doi |
https://doi.org/10.1029/2018GL081887 |
container_title |
Geophysical Research Letters |
container_volume |
46 |
container_issue |
4 |
container_start_page |
2261 |
op_container_end_page |
2270 |
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1795670908878192640 |