Iron fluxes to Talos Dome, Antarctica, over the past 200 kyr ...
Atmospheric fluxes of iron (Fe) over the past 200 kyr are reported for the coastal Antarctic Talos Dome ice core, based on acid leachable Fe concentrations. Fluxes of Fe to Talos Dome were consistently greater than those at Dome C, with the greatest difference observed during interglacial climates....
Main Authors: | , , , , , , |
---|---|
Format: | Text |
Language: | English |
Published: |
Copernicus Publications
2013
|
Subjects: | |
Online Access: | https://dx.doi.org/10.7892/boris.47749 http://boris.unibe.ch/47749/ |
id |
ftdatacite:10.7892/boris.47749 |
---|---|
record_format |
openpolar |
spelling |
ftdatacite:10.7892/boris.47749 2024-09-30T14:26:52+00:00 Iron fluxes to Talos Dome, Antarctica, over the past 200 kyr ... Gabrieli, J. Spolaor, A. Turetta, C. Barbante, C. Cozzi, G. Schüpbach, Simon Vallelonga, P. 2013 application/pdf https://dx.doi.org/10.7892/boris.47749 http://boris.unibe.ch/47749/ en eng Copernicus Publications info:eu-repo/semantics/openAccess 530 Physics Text ScholarlyArticle article-journal 2013 ftdatacite https://doi.org/10.7892/boris.47749 2024-09-02T10:00:02Z Atmospheric fluxes of iron (Fe) over the past 200 kyr are reported for the coastal Antarctic Talos Dome ice core, based on acid leachable Fe concentrations. Fluxes of Fe to Talos Dome were consistently greater than those at Dome C, with the greatest difference observed during interglacial climates. We observe different Fe flux trends at Dome C and Talos Dome during the deglaciation and early Holocene, attributed to a combination of deglacial activation of dust sources local to Talos Dome and the reorganisation of atmospheric transport pathways with the retreat of the Ross Sea ice shelf. This supports similar findings based on dust particle sizes and fluxes and Rare Earth Element fluxes. We show that Ca and Fe should not be used as quantitative proxies for mineral dust, as they all demonstrate different deglacial trends at Talos Dome and Dome C. Considering that a 20 ppmv decrease in atmospheric CO2 at the coldest part of the last glacial maximum occurs contemporaneously with the period of greatest Fe and ... Text Antarc* Antarctic Antarctica ice core Ice Shelf Ross Sea Sea ice DataCite Antarctic Ross Sea Talos Dome ENVELOPE(158.000,158.000,-73.000,-73.000) |
institution |
Open Polar |
collection |
DataCite |
op_collection_id |
ftdatacite |
language |
English |
topic |
530 Physics |
spellingShingle |
530 Physics Gabrieli, J. Spolaor, A. Turetta, C. Barbante, C. Cozzi, G. Schüpbach, Simon Vallelonga, P. Iron fluxes to Talos Dome, Antarctica, over the past 200 kyr ... |
topic_facet |
530 Physics |
description |
Atmospheric fluxes of iron (Fe) over the past 200 kyr are reported for the coastal Antarctic Talos Dome ice core, based on acid leachable Fe concentrations. Fluxes of Fe to Talos Dome were consistently greater than those at Dome C, with the greatest difference observed during interglacial climates. We observe different Fe flux trends at Dome C and Talos Dome during the deglaciation and early Holocene, attributed to a combination of deglacial activation of dust sources local to Talos Dome and the reorganisation of atmospheric transport pathways with the retreat of the Ross Sea ice shelf. This supports similar findings based on dust particle sizes and fluxes and Rare Earth Element fluxes. We show that Ca and Fe should not be used as quantitative proxies for mineral dust, as they all demonstrate different deglacial trends at Talos Dome and Dome C. Considering that a 20 ppmv decrease in atmospheric CO2 at the coldest part of the last glacial maximum occurs contemporaneously with the period of greatest Fe and ... |
format |
Text |
author |
Gabrieli, J. Spolaor, A. Turetta, C. Barbante, C. Cozzi, G. Schüpbach, Simon Vallelonga, P. |
author_facet |
Gabrieli, J. Spolaor, A. Turetta, C. Barbante, C. Cozzi, G. Schüpbach, Simon Vallelonga, P. |
author_sort |
Gabrieli, J. |
title |
Iron fluxes to Talos Dome, Antarctica, over the past 200 kyr ... |
title_short |
Iron fluxes to Talos Dome, Antarctica, over the past 200 kyr ... |
title_full |
Iron fluxes to Talos Dome, Antarctica, over the past 200 kyr ... |
title_fullStr |
Iron fluxes to Talos Dome, Antarctica, over the past 200 kyr ... |
title_full_unstemmed |
Iron fluxes to Talos Dome, Antarctica, over the past 200 kyr ... |
title_sort |
iron fluxes to talos dome, antarctica, over the past 200 kyr ... |
publisher |
Copernicus Publications |
publishDate |
2013 |
url |
https://dx.doi.org/10.7892/boris.47749 http://boris.unibe.ch/47749/ |
long_lat |
ENVELOPE(158.000,158.000,-73.000,-73.000) |
geographic |
Antarctic Ross Sea Talos Dome |
geographic_facet |
Antarctic Ross Sea Talos Dome |
genre |
Antarc* Antarctic Antarctica ice core Ice Shelf Ross Sea Sea ice |
genre_facet |
Antarc* Antarctic Antarctica ice core Ice Shelf Ross Sea Sea ice |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.7892/boris.47749 |
_version_ |
1811632988098658304 |