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Distribution of dissolved iron in Antarctic sea ice: Spatial, seasonal, and inter-annual variability

Citation

Lannuzel, D and Schoemann, V and de Jong, J and Pasquer, B and van der Merwe, P and Masson, F and Tison, JL and Bowie, AR, Distribution of dissolved iron in Antarctic sea ice: Spatial, seasonal, and inter-annual variability, Journal of Geophysical Research, 115, (3) EJ ISSN 0148-0227 (2010) [Refereed Article]

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Copyright Statement

Copyright © 2010 American Geophysical Union.

Official URL: http://www.agu.org/

DOI: doi:10.1029/2009JG001031

Abstract

[1] Results from recent field studies in Antarctic sea ice show no clear differences in dissolved iron (dFe) concentrations between pack ice sampled in East Antarctica (2.6– 20.5 nmol/L), in the Weddell Sea (0.7–36.8 nmol/L), and in the Bellingshausen Sea (1.1– 30.2 nmol/L). Dissolved Fe concentrations were also similar in land!fast ice collected in East Antarctica (0.7–4.3 nmol/L) and in the Ross Sea (1.1–6.0 nmol/L). In contrast, we observed a remarkable seasonal drawdown of dFe in sea ice for all reported studies. Furthermore, large inter!annual variations in depth!averaged dFe and organic matter concentrations were observed in sea ice collected in the East Antarctic sector between expeditions in late austral winter!spring of 2003 and 2007. Variability in the water column productivity and in the magnitude of the "new" Fe supply (e.g., upwelling, resuspended shelf sediments) at the time of sea ice formation could explain such differences.

Item Details

Item Type:Refereed Article
Research Division:Earth Sciences
Research Group:Oceanography
Research Field:Biological Oceanography
Objective Division:Environment
Objective Group:Physical and Chemical Conditions of Water
Objective Field:Physical and Chemical Conditions of Water in Marine Environments
Author:Lannuzel, D (Dr Delphine Lannuzel)
Author:Pasquer, B (Dr Benedicte Pasquer)
Author:van der Merwe, P (Mr Pier Van Der Merwe)
Author:Bowie, AR (Associate Professor Andrew Bowie)
ID Code:67554
Year Published:2010
Web of Science® Times Cited:55
Deposited By:IMAS Research and Education Centre
Deposited On:2011-03-04
Last Modified:2012-03-06
Downloads:2 View Download Statistics

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