Sources and transport of dissolved iron and manganese along the continental margin of the Bay of Biscay
Dissolved iron (DFe; <0.2µm) and dissolved manganese (DMn; <0.2µm) concentrations were determined in the water column of the Bay of Biscay (eastern North Atlantic Ocean) in March 2002. The samples were collected along a transect traversing from the European continental shelf over the continent...
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ftsouthampton:oai:eprints.soton.ac.uk:49726 2023-07-30T04:05:28+02:00 Sources and transport of dissolved iron and manganese along the continental margin of the Bay of Biscay Laes, A. Blain, S. Laan, P. Ussher, S.J. Achterberg, E.P. Treguer, P. de Baar, H.J.W. 2007 https://eprints.soton.ac.uk/49726/ http://www.biogeosciences.net/4/181/2007/bg-4-181-2007.pdf unknown Laes, A., Blain, S., Laan, P., Ussher, S.J., Achterberg, E.P., Treguer, P. and de Baar, H.J.W. (2007) Sources and transport of dissolved iron and manganese along the continental margin of the Bay of Biscay. Biogeosciences, 4 (2), 181-194. Article PeerReviewed 2007 ftsouthampton 2023-07-09T20:54:24Z Dissolved iron (DFe; <0.2µm) and dissolved manganese (DMn; <0.2µm) concentrations were determined in the water column of the Bay of Biscay (eastern North Atlantic Ocean) in March 2002. The samples were collected along a transect traversing from the European continental shelf over the continental slope. The highest DFe and DMn concentrations (2.39nM and 6.10 nM, respectively) were observed in the bottom waters on the shelf at stations closest to the coast. The release of trace metal from resuspended particles and the diffusion from pore waters were probably at the origin of elevated DFe and DMn concentrations in the Bottom Boundary Layer (BBL). In the slope region, the highest total dissolvable iron (TDFe), DFe and DMn values (24.6 nM, 1.58nM and 2.12nM, respectively) were observed close to the bottom at depth of ca. 600–700 m. Internal wave activity and slope circulation are thought to be at the origin of this phenomenon. These processes were also very likely the cause of elevated concentrations (DFe: 1.27 nM, DMn: 2.34 nM) measured in surface waters of stations located in the same area. At stations off the continental slope, the vertical distribution of both metals were typical of open ocean conditions, indicating that inputs from the continental margin did not impact the metal distributions in the offshore waters. Article in Journal/Newspaper North Atlantic University of Southampton: e-Prints Soton |
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University of Southampton: e-Prints Soton |
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ftsouthampton |
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description |
Dissolved iron (DFe; <0.2µm) and dissolved manganese (DMn; <0.2µm) concentrations were determined in the water column of the Bay of Biscay (eastern North Atlantic Ocean) in March 2002. The samples were collected along a transect traversing from the European continental shelf over the continental slope. The highest DFe and DMn concentrations (2.39nM and 6.10 nM, respectively) were observed in the bottom waters on the shelf at stations closest to the coast. The release of trace metal from resuspended particles and the diffusion from pore waters were probably at the origin of elevated DFe and DMn concentrations in the Bottom Boundary Layer (BBL). In the slope region, the highest total dissolvable iron (TDFe), DFe and DMn values (24.6 nM, 1.58nM and 2.12nM, respectively) were observed close to the bottom at depth of ca. 600–700 m. Internal wave activity and slope circulation are thought to be at the origin of this phenomenon. These processes were also very likely the cause of elevated concentrations (DFe: 1.27 nM, DMn: 2.34 nM) measured in surface waters of stations located in the same area. At stations off the continental slope, the vertical distribution of both metals were typical of open ocean conditions, indicating that inputs from the continental margin did not impact the metal distributions in the offshore waters. |
format |
Article in Journal/Newspaper |
author |
Laes, A. Blain, S. Laan, P. Ussher, S.J. Achterberg, E.P. Treguer, P. de Baar, H.J.W. |
spellingShingle |
Laes, A. Blain, S. Laan, P. Ussher, S.J. Achterberg, E.P. Treguer, P. de Baar, H.J.W. Sources and transport of dissolved iron and manganese along the continental margin of the Bay of Biscay |
author_facet |
Laes, A. Blain, S. Laan, P. Ussher, S.J. Achterberg, E.P. Treguer, P. de Baar, H.J.W. |
author_sort |
Laes, A. |
title |
Sources and transport of dissolved iron and manganese along the continental margin of the Bay of Biscay |
title_short |
Sources and transport of dissolved iron and manganese along the continental margin of the Bay of Biscay |
title_full |
Sources and transport of dissolved iron and manganese along the continental margin of the Bay of Biscay |
title_fullStr |
Sources and transport of dissolved iron and manganese along the continental margin of the Bay of Biscay |
title_full_unstemmed |
Sources and transport of dissolved iron and manganese along the continental margin of the Bay of Biscay |
title_sort |
sources and transport of dissolved iron and manganese along the continental margin of the bay of biscay |
publishDate |
2007 |
url |
https://eprints.soton.ac.uk/49726/ http://www.biogeosciences.net/4/181/2007/bg-4-181-2007.pdf |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_relation |
Laes, A., Blain, S., Laan, P., Ussher, S.J., Achterberg, E.P., Treguer, P. and de Baar, H.J.W. (2007) Sources and transport of dissolved iron and manganese along the continental margin of the Bay of Biscay. Biogeosciences, 4 (2), 181-194. |
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1772817405180903424 |