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 |
---|---|
Main Authors: | , , , , , , , , , , , |
Other Authors: | , , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
2018
|
Subjects: | |
Online Access: | http://hdl.handle.net/11568/933209 https://doi.org/10.1029/2018GC007658 |
id |
ftunivpisairis:oai:arpi.unipi.it:11568/933209 |
---|---|
record_format |
openpolar |
spelling |
ftunivpisairis:oai:arpi.unipi.it:11568/933209 2024-02-11T09:58:26+01:00 Regionalization of the Atmospheric Dust Cycle on the Periphery of the East Antarctic Ice Sheet Since the Last Glacial Maximum G. Baccolo B. Delmonte S. Albani C. Baroni G. Cibin M. Frezzotti D. Hampai A. Marcelli M. Revel M. C. Salvatore B. Stenni V. Maggi Baccolo, G. Delmonte, B. Albani, S. Baroni, C. Cibin, G. Frezzotti, M. Hampai, D. Marcelli, A. Revel, M. Salvatore, M. C. Stenni, B. Maggi, V. 2018 STAMPA http://hdl.handle.net/11568/933209 https://doi.org/10.1029/2018GC007658 eng eng info:eu-repo/semantics/altIdentifier/wos/WOS:000448475100038 volume:19 firstpage:3540 lastpage:3554 numberofpages:15 journal:GEOCHEMISTRY, GEOPHYSICS, GEOSYSTEMS http://hdl.handle.net/11568/933209 doi:10.1029/2018GC007658 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85054012150 Antarctica Glacial geology glaciers Atmospheric mineral dust chemical index of alteration Holocene ice cores weathering info:eu-repo/semantics/article 2018 ftunivpisairis https://doi.org/10.1029/2018GC007658 2024-01-17T17:58:34Z 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. ©2018. American Geophysical Union. All Rights Reserved. Article in Journal/Newspaper Antarc* Antarctic Antarctica East Antarctica ice core Ice Sheet Ross Sea Victoria Land ARPI - Archivio della Ricerca dell'Università di Pisa 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 |
ARPI - Archivio della Ricerca dell'Università di Pisa |
op_collection_id |
ftunivpisairis |
language |
English |
topic |
Antarctica Glacial geology glaciers Atmospheric mineral dust chemical index of alteration Holocene ice cores weathering |
spellingShingle |
Antarctica Glacial geology glaciers Atmospheric mineral dust chemical index of alteration Holocene ice cores weathering G. Baccolo B. Delmonte S. Albani C. Baroni G. Cibin M. Frezzotti D. Hampai A. Marcelli M. Revel M. C. Salvatore B. Stenni V. Maggi Regionalization of the Atmospheric Dust Cycle on the Periphery of the East Antarctic Ice Sheet Since the Last Glacial Maximum |
topic_facet |
Antarctica Glacial geology glaciers Atmospheric mineral dust chemical index of alteration Holocene ice cores weathering |
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. ©2018. American Geophysical Union. All Rights Reserved. |
author2 |
Baccolo, G. Delmonte, B. Albani, S. Baroni, C. Cibin, G. Frezzotti, M. Hampai, D. Marcelli, A. Revel, M. Salvatore, M. C. Stenni, B. Maggi, V. |
format |
Article in Journal/Newspaper |
author |
G. Baccolo B. Delmonte S. Albani C. Baroni G. Cibin M. Frezzotti D. Hampai A. Marcelli M. Revel M. C. Salvatore B. Stenni V. Maggi |
author_facet |
G. Baccolo B. Delmonte S. Albani C. Baroni G. Cibin M. Frezzotti D. Hampai A. Marcelli M. Revel M. C. Salvatore B. Stenni V. Maggi |
author_sort |
G. Baccolo |
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/11568/933209 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 East Antarctica Ross Sea Victoria Land East Antarctic Ice Sheet Talos Dome Polar Plateau |
geographic_facet |
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 firstpage:3540 lastpage:3554 numberofpages:15 journal:GEOCHEMISTRY, GEOPHYSICS, GEOSYSTEMS http://hdl.handle.net/11568/933209 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 |
3554 |
_version_ |
1790594089773694976 |