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Deep dissolved iron profiles in the eastern North Atlantic in relation to water masses

Laës, A., Blain, S., Laan, P., Achterberg, E.P., Sarthou, G. and De Baar, H.J.W. (2003) Deep dissolved iron profiles in the eastern North Atlantic in relation to water masses Geophysical Research Letters, 30, p. 1902. (doi:10.1029/2003GL017902).

Record type: Article

Abstract

Concentrations of dissolved iron (DFe, 0.2?m) were determined at two stations in the Biscay Abyssal Plain (North East Atlantic) in March 2002. DFe concentrations in the surface layer (0.23–0.34 nM) were typical of winter conditions in this area. At 1000 m, DFe concentrations increased to 0.62–0.86 nM. This feature is consistent with the production of DFe by remineralization of the biogenic material. However, at this depth, Mediterranean Outflow Water (MOW) could be an additional source of DFe. Below 2500 m, DFe concentrations were constant (0.75 ± 0.04 nM). An interesting feature of the profiles was the intermediate maximum of DFe (1.19–1.12 nM) around 2000 m, associated with the Labrador Sea Water (LSW). We suggest that the iron enrichment of LSW occurred when this water mass reached the continental margin, likely in the vicinity of the Goban plateau. Vertical distributions were highly dependent on water masses encountered.

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Published date: 2003
Organisations: Ocean and Earth Science

Identifiers

Local EPrints ID: 12528
URI: http://eprints.soton.ac.uk/id/eprint/12528
ISSN: 0094-8276
PURE UUID: 83bc4ec5-15fd-46fa-9495-4efa96729f41

Catalogue record

Date deposited: 26 Nov 2004
Last modified: 17 Jul 2017 17:02

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Contributors

Author: A. Laës
Author: S. Blain
Author: P. Laan
Author: E.P. Achterberg
Author: G. Sarthou
Author: H.J.W. De Baar

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