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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ftdoajarticles:oai:doaj.org/article:7b5974023aab4bbc92dc9b5e3e8cb03f 2023-05-15T13:47:33+02:00 Interpreting last glacial to Holocene dust changes at Talos Dome (East Antarctica): implications for atmospheric variations from regional to hemispheric scales S. Albani B. Delmonte V. Maggi C. Baroni J.-R. Petit B. Stenni C. Mazzola M. Frezzotti 2012-04-01T00:00:00Z https://doi.org/10.5194/cp-8-741-2012 https://doaj.org/article/7b5974023aab4bbc92dc9b5e3e8cb03f EN eng Copernicus Publications http://www.clim-past.net/8/741/2012/cp-8-741-2012.pdf https://doaj.org/toc/1814-9324 https://doaj.org/toc/1814-9332 doi:10.5194/cp-8-741-2012 1814-9324 1814-9332 https://doaj.org/article/7b5974023aab4bbc92dc9b5e3e8cb03f Climate of the Past, Vol 8, Iss 2, Pp 741-750 (2012) Environmental pollution TD172-193.5 Environmental protection TD169-171.8 Environmental sciences GE1-350 article 2012 ftdoajarticles https://doi.org/10.5194/cp-8-741-2012 2022-12-31T14:52:15Z 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 Directory of Open Access Journals: DOAJ Articles 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 |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Environmental pollution TD172-193.5 Environmental protection TD169-171.8 Environmental sciences GE1-350 |
spellingShingle |
Environmental pollution TD172-193.5 Environmental protection TD169-171.8 Environmental sciences GE1-350 S. Albani B. Delmonte V. Maggi C. Baroni J.-R. Petit B. Stenni C. Mazzola M. Frezzotti Interpreting last glacial to Holocene dust changes at Talos Dome (East Antarctica): implications for atmospheric variations from regional to hemispheric scales |
topic_facet |
Environmental pollution TD172-193.5 Environmental protection TD169-171.8 Environmental sciences GE1-350 |
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 |
Article in Journal/Newspaper |
author |
S. Albani B. Delmonte V. Maggi C. Baroni J.-R. Petit B. Stenni C. Mazzola M. Frezzotti |
author_facet |
S. Albani B. Delmonte V. Maggi C. Baroni J.-R. Petit B. Stenni C. Mazzola M. Frezzotti |
author_sort |
S. Albani |
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 |
publisher |
Copernicus Publications |
publishDate |
2012 |
url |
https://doi.org/10.5194/cp-8-741-2012 https://doaj.org/article/7b5974023aab4bbc92dc9b5e3e8cb03f |
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_source |
Climate of the Past, Vol 8, Iss 2, Pp 741-750 (2012) |
op_relation |
http://www.clim-past.net/8/741/2012/cp-8-741-2012.pdf https://doaj.org/toc/1814-9324 https://doaj.org/toc/1814-9332 doi:10.5194/cp-8-741-2012 1814-9324 1814-9332 https://doaj.org/article/7b5974023aab4bbc92dc9b5e3e8cb03f |
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 |
_version_ |
1766247286895017984 |