Regionalization of the Atmospheric Dust Cycle on the Periphery of the East Antarctic Ice Sheet Since the Last Glacial Maximum
Ice cores from inner East Antarctica provided some of the longest and most detailed climatic reconstructions and allowed understanding the relationships between atmospheric mineral dust and climate. In this work we present synchrotron radiation X-ray Fluorescence geochemical data of dust from the TA...
Published in: | Geochemistry, Geophysics, Geosystems |
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Online Access: | http://hdl.handle.net/11590/353553 https://doi.org/10.1029/2018GC007658 |
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ftunivroma3iris:oai:iris.uniroma3.it:11590/353553 2024-05-12T07:56:30+00:00 Regionalization of the Atmospheric Dust Cycle on the Periphery of the East Antarctic Ice Sheet Since the Last Glacial Maximum Baccolo, G. Delmonte, B. Albani, S. BARONI, CARLO Cibin, G. Frezzotti, M. Hampai, D. Marcelli, A. Revel, M. Salvatore, M. C. Stenni, B. Maggi, V. Baccolo, G. Delmonte, B. Albani, S. Baroni, Carlo Cibin, G. Frezzotti, M. Hampai, D. Marcelli, A. Revel, M. Salvatore, M. C. Stenni, B. Maggi, V. 2018 http://hdl.handle.net/11590/353553 https://doi.org/10.1029/2018GC007658 eng eng info:eu-repo/semantics/altIdentifier/wos/WOS:000448475100038 volume:19 issue:9 firstpage:3540 lastpage:3554 numberofpages:15 journal:GEOCHEMISTRY, GEOPHYSICS, GEOSYSTEMS http://hdl.handle.net/11590/353553 doi:10.1029/2018GC007658 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85054012150 Atmospheric mineral dust ice core Holocene Antarctica weathering chemical index of alteration info:eu-repo/semantics/article 2018 ftunivroma3iris https://doi.org/10.1029/2018GC007658 2024-04-16T01:59:16Z Ice cores from inner East Antarctica provided some of the longest and most detailed climatic reconstructions and allowed understanding the relationships between atmospheric mineral dust and climate. In this work we present synchrotron radiation X-ray Fluorescence geochemical data of dust from the TALDICE ice core drilled at Talos Dome, a peripheral ice dome of East Antarctica (Western Ross Sea). Results highlight a dominant southern South American origin for dust at TALDICE during the Last Glacial Maximum, similarly to other sites located further inland onto the polar plateau. On the contrary, a different scenario concerns Talos Dome during the Holocene if it is compared to more inner sites. The tight connection between high southern latitudes and Antarctica that characterizes cold climate stages becomes weaker since the onset of the last climatic transition and throughout the Holocene. The net effect of this process at Talos Dome is a modification of the atmospheric and environmental settings, owing to local Antarctic sources of Victoria Land to gain importance and become the dominant ones. At the same time in inner East Antarctica the provenance of dust remains remote also during Holocene, revealing an evolution of the homogeneous scenario observed in glacial periods. The enhanced sensitivity of peripheral ice sheet sites to local dust sources makes Talos Dome an ideal site to assess the climatic and atmospheric changes of the peripheral sectors of East Antarctica during the current interglacial period.Plain Language Summary During the Last Glacial Maximum, about 20,000 years ago, mineral dust from South America was massively transported toward Antarctica as a consequence of impressive environmental and climatic changes. Many ice cores drilled from the inner sectors of the Antarctic ice sheets support this scenario. Little is known when attention is shifted to peripheral areas and to interglacial periods. A new record of mineral particles at Talos Dome, a peripheral area of the East Antarctic ice sheet ... Article in Journal/Newspaper Antarc* Antarctic Antarctica East Antarctica ice core Ice Sheet Ross Sea Victoria Land Anagrafe della Ricerca d'Ateneo (Universitá degli studi Roma Tre) Antarctic The Antarctic East Antarctica Ross Sea Victoria Land East Antarctic Ice Sheet Talos Dome ENVELOPE(158.000,158.000,-73.000,-73.000) Polar Plateau ENVELOPE(0.000,0.000,-90.000,-90.000) Geochemistry, Geophysics, Geosystems 19 9 3540 3554 |
institution |
Open Polar |
collection |
Anagrafe della Ricerca d'Ateneo (Universitá degli studi Roma Tre) |
op_collection_id |
ftunivroma3iris |
language |
English |
topic |
Atmospheric mineral dust ice core Holocene Antarctica weathering chemical index of alteration |
spellingShingle |
Atmospheric mineral dust ice core Holocene Antarctica weathering chemical index of alteration Baccolo, G. Delmonte, B. Albani, S. BARONI, CARLO Cibin, G. Frezzotti, M. Hampai, D. Marcelli, A. Revel, M. Salvatore, M. C. Stenni, B. Maggi, V. Regionalization of the Atmospheric Dust Cycle on the Periphery of the East Antarctic Ice Sheet Since the Last Glacial Maximum |
topic_facet |
Atmospheric mineral dust ice core Holocene Antarctica weathering chemical index of alteration |
description |
Ice cores from inner East Antarctica provided some of the longest and most detailed climatic reconstructions and allowed understanding the relationships between atmospheric mineral dust and climate. In this work we present synchrotron radiation X-ray Fluorescence geochemical data of dust from the TALDICE ice core drilled at Talos Dome, a peripheral ice dome of East Antarctica (Western Ross Sea). Results highlight a dominant southern South American origin for dust at TALDICE during the Last Glacial Maximum, similarly to other sites located further inland onto the polar plateau. On the contrary, a different scenario concerns Talos Dome during the Holocene if it is compared to more inner sites. The tight connection between high southern latitudes and Antarctica that characterizes cold climate stages becomes weaker since the onset of the last climatic transition and throughout the Holocene. The net effect of this process at Talos Dome is a modification of the atmospheric and environmental settings, owing to local Antarctic sources of Victoria Land to gain importance and become the dominant ones. At the same time in inner East Antarctica the provenance of dust remains remote also during Holocene, revealing an evolution of the homogeneous scenario observed in glacial periods. The enhanced sensitivity of peripheral ice sheet sites to local dust sources makes Talos Dome an ideal site to assess the climatic and atmospheric changes of the peripheral sectors of East Antarctica during the current interglacial period.Plain Language Summary During the Last Glacial Maximum, about 20,000 years ago, mineral dust from South America was massively transported toward Antarctica as a consequence of impressive environmental and climatic changes. Many ice cores drilled from the inner sectors of the Antarctic ice sheets support this scenario. Little is known when attention is shifted to peripheral areas and to interglacial periods. A new record of mineral particles at Talos Dome, a peripheral area of the East Antarctic ice sheet ... |
author2 |
Baccolo, G. Delmonte, B. Albani, S. Baroni, Carlo Cibin, G. Frezzotti, M. Hampai, D. Marcelli, A. Revel, M. Salvatore, M. C. Stenni, B. Maggi, V. |
format |
Article in Journal/Newspaper |
author |
Baccolo, G. Delmonte, B. Albani, S. BARONI, CARLO Cibin, G. Frezzotti, M. Hampai, D. Marcelli, A. Revel, M. Salvatore, M. C. Stenni, B. Maggi, V. |
author_facet |
Baccolo, G. Delmonte, B. Albani, S. BARONI, CARLO Cibin, G. Frezzotti, M. Hampai, D. Marcelli, A. Revel, M. Salvatore, M. C. Stenni, B. Maggi, V. |
author_sort |
Baccolo, G. |
title |
Regionalization of the Atmospheric Dust Cycle on the Periphery of the East Antarctic Ice Sheet Since the Last Glacial Maximum |
title_short |
Regionalization of the Atmospheric Dust Cycle on the Periphery of the East Antarctic Ice Sheet Since the Last Glacial Maximum |
title_full |
Regionalization of the Atmospheric Dust Cycle on the Periphery of the East Antarctic Ice Sheet Since the Last Glacial Maximum |
title_fullStr |
Regionalization of the Atmospheric Dust Cycle on the Periphery of the East Antarctic Ice Sheet Since the Last Glacial Maximum |
title_full_unstemmed |
Regionalization of the Atmospheric Dust Cycle on the Periphery of the East Antarctic Ice Sheet Since the Last Glacial Maximum |
title_sort |
regionalization of the atmospheric dust cycle on the periphery of the east antarctic ice sheet since the last glacial maximum |
publishDate |
2018 |
url |
http://hdl.handle.net/11590/353553 https://doi.org/10.1029/2018GC007658 |
long_lat |
ENVELOPE(158.000,158.000,-73.000,-73.000) ENVELOPE(0.000,0.000,-90.000,-90.000) |
geographic |
Antarctic The Antarctic East Antarctica Ross Sea Victoria Land East Antarctic Ice Sheet Talos Dome Polar Plateau |
geographic_facet |
Antarctic The Antarctic East Antarctica Ross Sea Victoria Land East Antarctic Ice Sheet Talos Dome Polar Plateau |
genre |
Antarc* Antarctic Antarctica East Antarctica ice core Ice Sheet Ross Sea Victoria Land |
genre_facet |
Antarc* Antarctic Antarctica East Antarctica ice core Ice Sheet Ross Sea Victoria Land |
op_relation |
info:eu-repo/semantics/altIdentifier/wos/WOS:000448475100038 volume:19 issue:9 firstpage:3540 lastpage:3554 numberofpages:15 journal:GEOCHEMISTRY, GEOPHYSICS, GEOSYSTEMS http://hdl.handle.net/11590/353553 doi:10.1029/2018GC007658 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85054012150 |
op_doi |
https://doi.org/10.1029/2018GC007658 |
container_title |
Geochemistry, Geophysics, Geosystems |
container_volume |
19 |
container_issue |
9 |
container_start_page |
3540 |
op_container_end_page |
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