Modern and Holocene aeolian dust variability from Tabs Dome (Northern Victoria Land) to the interior of the Antarctic ice sheet
High-elevation sites from the inner part of the East Antarctic plateau sample windborne dust representative of large portions of the Southern hemisphere, and are sensitive to long-range atmospheric transport conditions to polar areas. On the periphery of the ice sheet, conversely, the aeolian transp...
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Online Access: | http://hdl.handle.net/10281/67644 https://doi.org/10.1016/j.quascirev.2012.11.033 |
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ftunivmilanobic:oai:boa.unimib.it:10281/67644 2024-04-14T08:04:09+00:00 Modern and Holocene aeolian dust variability from Tabs Dome (Northern Victoria Land) to the interior of the Antarctic ice sheet DELMONTE, BARBARA MAGGI, VALTER Baroni, C Andersson, P Narcisi, B Salvatore, M Petit, J Scarchilli, C Frezzotti, M Albani, S Delmonte, B Baroni, C Andersson, P Narcisi, B Salvatore, M Petit, J Scarchilli, C Frezzotti, M Albani, S Maggi, V 2013 http://hdl.handle.net/10281/67644 https://doi.org/10.1016/j.quascirev.2012.11.033 eng eng Elsevier Limited country:NL info:eu-repo/semantics/altIdentifier/wos/WOS:000319951600005 volume:64 firstpage:76 lastpage:89 numberofpages:14 journal:QUATERNARY SCIENCE REVIEWS http://hdl.handle.net/10281/67644 doi:10.1016/j.quascirev.2012.11.033 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-84873265469 Paleoclimatology Ice Core info:eu-repo/semantics/article 2013 ftunivmilanobic https://doi.org/10.1016/j.quascirev.2012.11.033 2024-03-21T16:48:40Z High-elevation sites from the inner part of the East Antarctic plateau sample windborne dust representative of large portions of the Southern hemisphere, and are sensitive to long-range atmospheric transport conditions to polar areas. On the periphery of the ice sheet, conversely, the aeolian transport of particles from high-elevation ice-free areas can locally represent a relatively important additional input of dust to the atmosphere, and the interplay of atmospheric dynamics, dust transport and deposition is strictly related to the regional atmospheric circulation behaviour both at present-day and in the past. The understanding of the spatial extent where local sources can influence the mineral dust budget on the ice sheet is fundamental for understanding the atmospheric dust cycle in Antarctica and for the interpretation of the dust history in marginal glaciological settings.In this work we investigate the spatial variability of dust flux and provenance during modern (pre-industrial) and Holocene times along a transect connecting Talos Dome to the internal sites of the Antarctic plateau and we extend the existing documentation of the isotopic (Sr-Nd) fingerprint of dust-sized sediments from Victoria Land source areas.Dust flux, grain size and isotopic composition show a marked variability between Talos Dome, Mid Point, D4 and Dome C/Vostok, suggesting that local sources play an important role on the periphery of the ice sheet. Microscope observations reveal that background mineral aerosol in the TALDICE core is composed by a mixture of dust, volcanic particles and micrometric-sized fragments of diatoms, these latter representing a small but pervasive component of Antarctic sediments. A set of samples from Victoria Land, mostly consisting of regolith and glacial deposits from high-elevation areas, was collected specially for this work and the isotopic composition of the dust-sized fraction of samples was analyzed. Results reveal a close relationship with the parent lithologies, but direct comparison between ... Article in Journal/Newspaper Antarc* Antarctic Antarctica ice core Ice Sheet Victoria Land Università degli Studi di Milano-Bicocca: BOA (Bicocca Open Archive) Antarctic Talos Dome ENVELOPE(158.000,158.000,-73.000,-73.000) The Antarctic Victoria Land Quaternary Science Reviews 64 76 89 |
institution |
Open Polar |
collection |
Università degli Studi di Milano-Bicocca: BOA (Bicocca Open Archive) |
op_collection_id |
ftunivmilanobic |
language |
English |
topic |
Paleoclimatology Ice Core |
spellingShingle |
Paleoclimatology Ice Core DELMONTE, BARBARA MAGGI, VALTER Baroni, C Andersson, P Narcisi, B Salvatore, M Petit, J Scarchilli, C Frezzotti, M Albani, S Modern and Holocene aeolian dust variability from Tabs Dome (Northern Victoria Land) to the interior of the Antarctic ice sheet |
topic_facet |
Paleoclimatology Ice Core |
description |
High-elevation sites from the inner part of the East Antarctic plateau sample windborne dust representative of large portions of the Southern hemisphere, and are sensitive to long-range atmospheric transport conditions to polar areas. On the periphery of the ice sheet, conversely, the aeolian transport of particles from high-elevation ice-free areas can locally represent a relatively important additional input of dust to the atmosphere, and the interplay of atmospheric dynamics, dust transport and deposition is strictly related to the regional atmospheric circulation behaviour both at present-day and in the past. The understanding of the spatial extent where local sources can influence the mineral dust budget on the ice sheet is fundamental for understanding the atmospheric dust cycle in Antarctica and for the interpretation of the dust history in marginal glaciological settings.In this work we investigate the spatial variability of dust flux and provenance during modern (pre-industrial) and Holocene times along a transect connecting Talos Dome to the internal sites of the Antarctic plateau and we extend the existing documentation of the isotopic (Sr-Nd) fingerprint of dust-sized sediments from Victoria Land source areas.Dust flux, grain size and isotopic composition show a marked variability between Talos Dome, Mid Point, D4 and Dome C/Vostok, suggesting that local sources play an important role on the periphery of the ice sheet. Microscope observations reveal that background mineral aerosol in the TALDICE core is composed by a mixture of dust, volcanic particles and micrometric-sized fragments of diatoms, these latter representing a small but pervasive component of Antarctic sediments. A set of samples from Victoria Land, mostly consisting of regolith and glacial deposits from high-elevation areas, was collected specially for this work and the isotopic composition of the dust-sized fraction of samples was analyzed. Results reveal a close relationship with the parent lithologies, but direct comparison between ... |
author2 |
Delmonte, B Baroni, C Andersson, P Narcisi, B Salvatore, M Petit, J Scarchilli, C Frezzotti, M Albani, S Maggi, V |
format |
Article in Journal/Newspaper |
author |
DELMONTE, BARBARA MAGGI, VALTER Baroni, C Andersson, P Narcisi, B Salvatore, M Petit, J Scarchilli, C Frezzotti, M Albani, S |
author_facet |
DELMONTE, BARBARA MAGGI, VALTER Baroni, C Andersson, P Narcisi, B Salvatore, M Petit, J Scarchilli, C Frezzotti, M Albani, S |
author_sort |
DELMONTE, BARBARA |
title |
Modern and Holocene aeolian dust variability from Tabs Dome (Northern Victoria Land) to the interior of the Antarctic ice sheet |
title_short |
Modern and Holocene aeolian dust variability from Tabs Dome (Northern Victoria Land) to the interior of the Antarctic ice sheet |
title_full |
Modern and Holocene aeolian dust variability from Tabs Dome (Northern Victoria Land) to the interior of the Antarctic ice sheet |
title_fullStr |
Modern and Holocene aeolian dust variability from Tabs Dome (Northern Victoria Land) to the interior of the Antarctic ice sheet |
title_full_unstemmed |
Modern and Holocene aeolian dust variability from Tabs Dome (Northern Victoria Land) to the interior of the Antarctic ice sheet |
title_sort |
modern and holocene aeolian dust variability from tabs dome (northern victoria land) to the interior of the antarctic ice sheet |
publisher |
Elsevier Limited |
publishDate |
2013 |
url |
http://hdl.handle.net/10281/67644 https://doi.org/10.1016/j.quascirev.2012.11.033 |
long_lat |
ENVELOPE(158.000,158.000,-73.000,-73.000) |
geographic |
Antarctic Talos Dome The Antarctic Victoria Land |
geographic_facet |
Antarctic Talos Dome The Antarctic Victoria Land |
genre |
Antarc* Antarctic Antarctica ice core Ice Sheet Victoria Land |
genre_facet |
Antarc* Antarctic Antarctica ice core Ice Sheet Victoria Land |
op_relation |
info:eu-repo/semantics/altIdentifier/wos/WOS:000319951600005 volume:64 firstpage:76 lastpage:89 numberofpages:14 journal:QUATERNARY SCIENCE REVIEWS http://hdl.handle.net/10281/67644 doi:10.1016/j.quascirev.2012.11.033 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-84873265469 |
op_doi |
https://doi.org/10.1016/j.quascirev.2012.11.033 |
container_title |
Quaternary Science Reviews |
container_volume |
64 |
container_start_page |
76 |
op_container_end_page |
89 |
_version_ |
1796300551431913472 |