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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fttriple:oai:gotriple.eu:JsGJ1gMtGbfppmrlxyH8X 2023-05-15T13:38:12+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. Stenni, B. Mazzola, C. Frezzotti, M. 2018-09-27 https://doi.org/10.5194/cp-8-741-2012 https://cp.copernicus.org/articles/8/741/2012/ en eng doi:10.5194/cp-8-741-2012 10670/1.x27kkr https://cp.copernicus.org/articles/8/741/2012/ undefined Geographica Helvetica - geography eISSN: 1814-9332 geo envir Text https://vocabularies.coar-repositories.org/resource_types/c_18cf/ 2018 fttriple https://doi.org/10.5194/cp-8-741-2012 2023-01-22T19:13:05Z 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. Text Antarc* Antarctic Antarctica East Antarctica EPICA ice core Ice Sheet Ross Sea Victoria Land Unknown Antarctic East Antarctic Ice Sheet East Antarctica Ross Sea Talos Dome ENVELOPE(158.000,158.000,-73.000,-73.000) Victoria Land Climate of the Past 8 2 741 750 |
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geo envir Albani, S. Delmonte, B. Maggi, V. Baroni, C. Petit, J.-R. Stenni, B. Mazzola, C. Frezzotti, M. Interpreting last glacial to Holocene dust changes at Talos Dome (East Antarctica): implications for atmospheric variations from regional to hemispheric scales |
topic_facet |
geo envir |
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. |
format |
Text |
author |
Albani, S. Delmonte, B. Maggi, V. Baroni, C. Petit, J.-R. Stenni, B. Mazzola, C. Frezzotti, M. |
author_facet |
Albani, S. Delmonte, B. Maggi, V. Baroni, C. Petit, J.-R. Stenni, B. Mazzola, C. Frezzotti, M. |
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 |
2018 |
url |
https://doi.org/10.5194/cp-8-741-2012 https://cp.copernicus.org/articles/8/741/2012/ |
long_lat |
ENVELOPE(158.000,158.000,-73.000,-73.000) |
geographic |
Antarctic East Antarctic Ice Sheet East Antarctica Ross Sea Talos Dome Victoria Land |
geographic_facet |
Antarctic East Antarctic Ice Sheet East Antarctica Ross Sea Talos Dome Victoria Land |
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_source |
Geographica Helvetica - geography eISSN: 1814-9332 |
op_relation |
doi:10.5194/cp-8-741-2012 10670/1.x27kkr https://cp.copernicus.org/articles/8/741/2012/ |
op_rights |
undefined |
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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1766102492880306176 |