Modern and Holocene aeolian dust variability from Talos 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/11590/353573 https://doi.org/10.1016/j.quascirev.2012.11.033 |
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ftunivroma3iris:oai:iris.uniroma3.it:11590/353573 2024-02-27T08:33:44+00:00 Modern and Holocene aeolian dust variability from Talos Dome (Northern Victoria Land) to the interior of the Antarctic ice sheet Delmonte B. Baroni C. Andersson P. S. Narcisi B. Salvatore M. C. Petit J. R. Scarchilli C. Frezzotti M. Albani S. Maggi V. Delmonte, B. Baroni, C. Andersson, P. S. Narcisi, B. Salvatore, M. C. Petit, J. R. Scarchilli, C. Frezzotti, M. Albani, S. Maggi, V. 2013 http://hdl.handle.net/11590/353573 https://doi.org/10.1016/j.quascirev.2012.11.033 eng eng info:eu-repo/semantics/altIdentifier/wos/WOS:000319951600005 volume:64 firstpage:76 lastpage:89 numberofpages:14 journal:QUATERNARY SCIENCE REVIEWS http://hdl.handle.net/11590/353573 doi:10.1016/j.quascirev.2012.11.033 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-84873265469 Antarctica Dust Holocene Ice core Sr-Nd isotopes info:eu-repo/semantics/article 2013 ftunivroma3iris https://doi.org/10.1016/j.quascirev.2012.11.033 2024-01-31T17:41:11Z 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 Anagrafe della Ricerca d'Ateneo (Universitá degli studi Roma Tre) Antarctic The Antarctic Victoria Land Talos Dome ENVELOPE(158.000,158.000,-73.000,-73.000) Quaternary Science Reviews 64 76 89 |
institution |
Open Polar |
collection |
Anagrafe della Ricerca d'Ateneo (Universitá degli studi Roma Tre) |
op_collection_id |
ftunivroma3iris |
language |
English |
topic |
Antarctica Dust Holocene Ice core Sr-Nd isotopes |
spellingShingle |
Antarctica Dust Holocene Ice core Sr-Nd isotopes Delmonte B. Baroni C. Andersson P. S. Narcisi B. Salvatore M. C. Petit J. R. Scarchilli C. Frezzotti M. Albani S. Maggi V. Modern and Holocene aeolian dust variability from Talos Dome (Northern Victoria Land) to the interior of the Antarctic ice sheet |
topic_facet |
Antarctica Dust Holocene Ice core Sr-Nd isotopes |
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. S. Narcisi, B. Salvatore, M. C. Petit, J. R. Scarchilli, C. Frezzotti, M. Albani, S. Maggi, V. |
format |
Article in Journal/Newspaper |
author |
Delmonte B. Baroni C. Andersson P. S. Narcisi B. Salvatore M. C. Petit J. R. Scarchilli C. Frezzotti M. Albani S. Maggi V. |
author_facet |
Delmonte B. Baroni C. Andersson P. S. Narcisi B. Salvatore M. C. Petit J. R. Scarchilli C. Frezzotti M. Albani S. Maggi V. |
author_sort |
Delmonte B. |
title |
Modern and Holocene aeolian dust variability from Talos Dome (Northern Victoria Land) to the interior of the Antarctic ice sheet |
title_short |
Modern and Holocene aeolian dust variability from Talos Dome (Northern Victoria Land) to the interior of the Antarctic ice sheet |
title_full |
Modern and Holocene aeolian dust variability from Talos Dome (Northern Victoria Land) to the interior of the Antarctic ice sheet |
title_fullStr |
Modern and Holocene aeolian dust variability from Talos Dome (Northern Victoria Land) to the interior of the Antarctic ice sheet |
title_full_unstemmed |
Modern and Holocene aeolian dust variability from Talos Dome (Northern Victoria Land) to the interior of the Antarctic ice sheet |
title_sort |
modern and holocene aeolian dust variability from talos dome (northern victoria land) to the interior of the antarctic ice sheet |
publishDate |
2013 |
url |
http://hdl.handle.net/11590/353573 https://doi.org/10.1016/j.quascirev.2012.11.033 |
long_lat |
ENVELOPE(158.000,158.000,-73.000,-73.000) |
geographic |
Antarctic The Antarctic Victoria Land Talos Dome |
geographic_facet |
Antarctic The Antarctic Victoria Land Talos Dome |
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/11590/353573 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 |
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1792047482973192192 |