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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ftenea:oai:iris.enea.it:20.500.12079/697 2024-03-31T07:48:58+00:00 Modern and Holocene aeolian dust variability from Talos Dome (Northern Victoria Land) to the interior of the Antarctic ice sheet Frezzotti, M. Scarchilli, C. Narcisi, B. Frezzotti, M. Scarchilli, C. Narcisi, B. 2013 https://hdl.handle.net/20.500.12079/697 https://doi.org/10.1016/j.quascirev.2012.11.033 http://www.scopus.com/inward/record.url?eid=2-s2.0-84873265469&partnerID=40&md5=bc48e7eb872a355334223e928c419281 en eng volume:64 numberofpages:76 - 89 journal:QUATERNARY SCIENCE REVIEWS http://hdl.handle.net/20.500.12079/697 doi:10.1016/j.quascirev.2012.11.033 info:eu-repo/semantics/altIdentifier/scopus/Scopus ID: 2-s2.0-84873265469 http://www.scopus.com/inward/record.url?eid=2-s2.0-84873265469&partnerID=40&md5=bc48e7eb872a355334223e928c419281 Antarctica Dust Holocene Ice core Sr-Nd isotopes info:eu-repo/semantics/article 2013 ftenea https://doi.org/20.500.12079/69710.1016/j.quascirev.2012.11.033 2024-03-06T00:12:05Z 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 ENEA-IRIS Open Archive (Agenzia nazionale per le nuove tecnologie, l'energia e lo sviluppo economico sostenibile) 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 |
ENEA-IRIS Open Archive (Agenzia nazionale per le nuove tecnologie, l'energia e lo sviluppo economico sostenibile) |
op_collection_id |
ftenea |
language |
English |
topic |
Antarctica Dust Holocene Ice core Sr-Nd isotopes |
spellingShingle |
Antarctica Dust Holocene Ice core Sr-Nd isotopes Frezzotti, M. Scarchilli, C. Narcisi, B. 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 |
Frezzotti, M. Scarchilli, C. Narcisi, B. |
format |
Article in Journal/Newspaper |
author |
Frezzotti, M. Scarchilli, C. Narcisi, B. |
author_facet |
Frezzotti, M. Scarchilli, C. Narcisi, B. |
author_sort |
Frezzotti, M. |
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 |
https://hdl.handle.net/20.500.12079/697 https://doi.org/10.1016/j.quascirev.2012.11.033 http://www.scopus.com/inward/record.url?eid=2-s2.0-84873265469&partnerID=40&md5=bc48e7eb872a355334223e928c419281 |
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 |
volume:64 numberofpages:76 - 89 journal:QUATERNARY SCIENCE REVIEWS http://hdl.handle.net/20.500.12079/697 doi:10.1016/j.quascirev.2012.11.033 info:eu-repo/semantics/altIdentifier/scopus/Scopus ID: 2-s2.0-84873265469 http://www.scopus.com/inward/record.url?eid=2-s2.0-84873265469&partnerID=40&md5=bc48e7eb872a355334223e928c419281 |
op_doi |
https://doi.org/20.500.12079/69710.1016/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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1795036859407007744 |