Interpreting last glacial to Holocene dust changes at Talos Dome (East Antarctica): implications for atmospheric variations from regional to hemispheric scales
Central East Antarctic ice cores preserve stratigraphic records of mineral dust originating from remote sources in the Southern Hemisphere, and represent useful indicators of climatic variations on glacial-interglacial time scales. The peripheries of the East Antarctic Ice Sheet, where ice-free area...
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Online Access: | http://hdl.handle.net/11368/2626915 https://doi.org/10.5194/cp-8-741-2012 |
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ftunitriestiris:oai:arts.units.it:11368/2626915 2023-05-15T14:02:51+02:00 Interpreting last glacial to Holocene dust changes at Talos Dome (East Antarctica): implications for atmospheric variations from regional to hemispheric scales Albani S. Delmonte B. Maggi V. Baroni C. Petit J. R. Mazzola C. Frezzotti M. STENNI, BARBARA Albani, S. Delmonte, B. Maggi, V. Baroni, C. Petit, J. R. Stenni, Barbara Mazzola, C. Frezzotti, M. 2012 http://hdl.handle.net/11368/2626915 https://doi.org/10.5194/cp-8-741-2012 eng eng volume:8 firstpage:741 lastpage:750 numberofpages:10 journal:CLIMATE OF THE PAST http://hdl.handle.net/11368/2626915 doi:10.5194/cp-8-741-2012 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-84859725516 Dust flux grain size ice core East Antarctica Talos Dome Ross Sea last deglaciation isotopic profile remote source local sources info:eu-repo/semantics/article 2012 ftunitriestiris https://doi.org/10.5194/cp-8-741-2012 2023-04-09T06:11:18Z Central East Antarctic ice cores preserve stratigraphic records of mineral dust originating from remote sources in the Southern Hemisphere, and represent useful indicators of climatic variations on glacial-interglacial time scales. The peripheries of the East Antarctic Ice Sheet, where ice-free areas with the potential to emit dust exist, have been less explored from this point of view. Here, we present a new profile of dust deposition flux and grain size distributions from an ice core drilled at Talos Dome (TALDICE, Northern Victoria Land, East Antarctica), where there is a significant input of dust from proximal Antarctic ice-free areas. We analyze dust and stable water isotopes variations from the Last Glacial Maximum to the Late Holocene, and compare them to the EPICA Dome C profiles from central East Antarctica. The smaller glacial-interglacial variations at Talos Dome compared to Dome C and a distinctive decreasing trend during the Holocene characterize the TALDICE dust profile. By deciphering the composite dust signal from both remote and local sources, we show the potential of this combined proxy of source activity and atmospheric transport to give information on both regional and larger spatial scales. In particular, we show how a regional signal, which we relate to the deglaciation history of the Ross Sea embayment, can be superimposed to the broader scale glacial-interglacial variability that characterizes other Antarctic sites. Article in Journal/Newspaper Antarc* Antarctic Antarctica East Antarctica EPICA ice core Ice Sheet Ross Sea Victoria Land Università degli studi di Trieste: ArTS (Archivio della ricerca di Trieste) Antarctic East Antarctica Ross Sea Victoria Land East Antarctic Ice Sheet Talos Dome ENVELOPE(158.000,158.000,-73.000,-73.000) Climate of the Past 8 2 741 750 |
institution |
Open Polar |
collection |
Università degli studi di Trieste: ArTS (Archivio della ricerca di Trieste) |
op_collection_id |
ftunitriestiris |
language |
English |
topic |
Dust flux grain size ice core East Antarctica Talos Dome Ross Sea last deglaciation isotopic profile remote source local sources |
spellingShingle |
Dust flux grain size ice core East Antarctica Talos Dome Ross Sea last deglaciation isotopic profile remote source local sources Albani S. Delmonte B. Maggi V. Baroni C. Petit J. R. Mazzola C. Frezzotti M. STENNI, BARBARA Interpreting last glacial to Holocene dust changes at Talos Dome (East Antarctica): implications for atmospheric variations from regional to hemispheric scales |
topic_facet |
Dust flux grain size ice core East Antarctica Talos Dome Ross Sea last deglaciation isotopic profile remote source local sources |
description |
Central East Antarctic ice cores preserve stratigraphic records of mineral dust originating from remote sources in the Southern Hemisphere, and represent useful indicators of climatic variations on glacial-interglacial time scales. The peripheries of the East Antarctic Ice Sheet, where ice-free areas with the potential to emit dust exist, have been less explored from this point of view. Here, we present a new profile of dust deposition flux and grain size distributions from an ice core drilled at Talos Dome (TALDICE, Northern Victoria Land, East Antarctica), where there is a significant input of dust from proximal Antarctic ice-free areas. We analyze dust and stable water isotopes variations from the Last Glacial Maximum to the Late Holocene, and compare them to the EPICA Dome C profiles from central East Antarctica. The smaller glacial-interglacial variations at Talos Dome compared to Dome C and a distinctive decreasing trend during the Holocene characterize the TALDICE dust profile. By deciphering the composite dust signal from both remote and local sources, we show the potential of this combined proxy of source activity and atmospheric transport to give information on both regional and larger spatial scales. In particular, we show how a regional signal, which we relate to the deglaciation history of the Ross Sea embayment, can be superimposed to the broader scale glacial-interglacial variability that characterizes other Antarctic sites. |
author2 |
Albani, S. Delmonte, B. Maggi, V. Baroni, C. Petit, J. R. Stenni, Barbara Mazzola, C. Frezzotti, M. |
format |
Article in Journal/Newspaper |
author |
Albani S. Delmonte B. Maggi V. Baroni C. Petit J. R. Mazzola C. Frezzotti M. STENNI, BARBARA |
author_facet |
Albani S. Delmonte B. Maggi V. Baroni C. Petit J. R. Mazzola C. Frezzotti M. STENNI, BARBARA |
author_sort |
Albani S. |
title |
Interpreting last glacial to Holocene dust changes at Talos Dome (East Antarctica): implications for atmospheric variations from regional to hemispheric scales |
title_short |
Interpreting last glacial to Holocene dust changes at Talos Dome (East Antarctica): implications for atmospheric variations from regional to hemispheric scales |
title_full |
Interpreting last glacial to Holocene dust changes at Talos Dome (East Antarctica): implications for atmospheric variations from regional to hemispheric scales |
title_fullStr |
Interpreting last glacial to Holocene dust changes at Talos Dome (East Antarctica): implications for atmospheric variations from regional to hemispheric scales |
title_full_unstemmed |
Interpreting last glacial to Holocene dust changes at Talos Dome (East Antarctica): implications for atmospheric variations from regional to hemispheric scales |
title_sort |
interpreting last glacial to holocene dust changes at talos dome (east antarctica): implications for atmospheric variations from regional to hemispheric scales |
publishDate |
2012 |
url |
http://hdl.handle.net/11368/2626915 https://doi.org/10.5194/cp-8-741-2012 |
long_lat |
ENVELOPE(158.000,158.000,-73.000,-73.000) |
geographic |
Antarctic East Antarctica Ross Sea Victoria Land East Antarctic Ice Sheet Talos Dome |
geographic_facet |
Antarctic East Antarctica Ross Sea Victoria Land East Antarctic Ice Sheet Talos Dome |
genre |
Antarc* Antarctic Antarctica East Antarctica EPICA ice core Ice Sheet Ross Sea Victoria Land |
genre_facet |
Antarc* Antarctic Antarctica East Antarctica EPICA ice core Ice Sheet Ross Sea Victoria Land |
op_relation |
volume:8 firstpage:741 lastpage:750 numberofpages:10 journal:CLIMATE OF THE PAST http://hdl.handle.net/11368/2626915 doi:10.5194/cp-8-741-2012 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-84859725516 |
op_doi |
https://doi.org/10.5194/cp-8-741-2012 |
container_title |
Climate of the Past |
container_volume |
8 |
container_issue |
2 |
container_start_page |
741 |
op_container_end_page |
750 |
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1766273266860687360 |