http://www.cnr.it/ontology/cnr/individuo/prodotto/ID312672
Variations in Iron Fluxes across Antarctica: a new record from Talos Dome in Victoria Land, Antarctica (Contributo in atti di convegno)
- Type
- Label
- Variations in Iron Fluxes across Antarctica: a new record from Talos Dome in Victoria Land, Antarctica (Contributo in atti di convegno) (literal)
- Anno
- 2012-01-01T00:00:00+01:00 (literal)
- Alternative label
P. Vallelonga, C. Barbante, G. Cozzi, J. Gabrieli, V. Gaspari, A. Spolaor and C. Turetta (2012)
Variations in Iron Fluxes across Antarctica: a new record from Talos Dome in Victoria Land, Antarctica
in EGU2012 (session CL4.10), Vienna, Austria, 22-27 April 2012
(literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
- P. Vallelonga, C. Barbante, G. Cozzi, J. Gabrieli, V. Gaspari, A. Spolaor and C. Turetta (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
- Centre for Ice and Climate, Niels Bohr Institute, Copenhagen, Denmark (ptravis@nbi.ku.dk),
Institute for the Dynamics of Environmental Processes (IDPA) - CNR, Venice, Venice, Italy,
Department of Environmental Sciences, University Ca' Foscari of Venice, Venice, Italy,
Accademia Nazionale dei Lincei, Rome, Italy.,
Department of Earth Science, University of Siena, Siena, Italy. (literal)
- Titolo
- Variations in Iron Fluxes across Antarctica: a new record from Talos Dome in Victoria Land, Antarctica (literal)
- Abstract
- A new record of Iron (Fe) fluxes are presented from a coastal Antarctic site, Talos Dome. The Talos Dome ice
core was drilled from 2005-2007, to a depth of 1620 m, covering more than 250 ky of climate variability. Iron
fluxes at Talos Dome were consistently greater than at Dome C, particularly during interglacials when Talos
Dome receives dust deflated from proximal ice-free areas. The 50-fold changes in Fe concentration variability
over glacial-interglacial cycles, observed at Dome C, are not representative of deposition at this coastal site. Iron
fluxes vary greatly from dust and calcium, which have been previously used as proxies for micronutrient deposition
reconstructions. These differences in trace element fluxes across Antarctica are relevant for the reconstruction of
Southern Ocean paleoproductivity and potential impacts on atmospheric CO2 drawdown over glacial-interglacial
timescales. (literal)
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- Autore CNR
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