Total mercury in the water column near the shelf edge of the European continental margin
The purpose of this paper is to investigate the distribution and the relative importance of processes that affect mercury distribution in the water column at the shelf edge of the Celtic Sea, on the western European continental margin. The water column, down to 4500 m, was sampled during two cruises...
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ftarchimer:oai:archimer.ifremer.fr:660 2023-05-15T16:52:01+02:00 Total mercury in the water column near the shelf edge of the European continental margin Cossa, Daniel Cotte Krief, Marie-hélène Mason, Robert P. Bretaudeau-sanjuan, Jane 2004-11 application/pdf https://archimer.ifremer.fr/doc/2004/publication-660.pdf https://doi.org/10.1016/j.marchem.2004.02.019 https://archimer.ifremer.fr/doc/00000/660/ eng eng Elsevier https://archimer.ifremer.fr/doc/2004/publication-660.pdf doi:10.1016/j.marchem.2004.02.019 https://archimer.ifremer.fr/doc/00000/660/ 2004 Elsevier B.V. All rights reserved info:eu-repo/semantics/openAccess restricted use Marine Chemistry (0304-4203) (Elsevier), 2004-11 , Vol. 90 , N. 1-4 , P. 21-29 Regeneration Atmospheric deposition Deep profile Upwelling Atlantic ocean Celtic Sea Shelf break Continental margin Mercury text Publication info:eu-repo/semantics/article 2004 ftarchimer https://doi.org/10.1016/j.marchem.2004.02.019 2021-09-23T20:13:16Z The purpose of this paper is to investigate the distribution and the relative importance of processes that affect mercury distribution in the water column at the shelf edge of the Celtic Sea, on the western European continental margin. The water column, down to 4500 m, was sampled during two cruises, one in winter 1994 and the other in June 1995, on eight stations. Total mercury concentrations ranged from 0.29 to 9.37 pM with the extreme values in the first 200 m. The highly variable concentrations in the surface layers are attributed to intense atmospheric-sea water exchange processes. The low concentrations encountered in the shelf water prelude any significant influence of continental waters in this area. In the mixed layer, biological uptake and regenerative processes appear to dominate in controlling the vertical mercury distribution. The intermediate and deep-water mercury distribution is mainly governed by the hydrographic features. In summer, a mercury enrichment was observed in the upwelling zone of the shelf break. Mean mercury concentration in the Lower Deep Water (LDW) was typically 1.96 +/- 0.23 pM and in the Labrador Sea Water (LSW) 1.97 +/- 0.63 pM. The Mediterranean Intermediate Water (MIW) revealed similar levels, with a mean mercury concentration of 2.04 +/- 0.84 pM. Between LDW and LSW, the Iceland-Scotland Overflow Water (SOW) exhibited higher concentrations (2.76 +/- 0.35 pM). The upper part of the North East Atlantic Central Water (NEADW) and lower part of the North Atlantic Deep Water (NEACW) were characterized by marked peaks of concentration, which are interpreted in term of atmospheric influence and particle regeneration. Article in Journal/Newspaper Iceland Labrador Sea North Atlantic Deep Water North Atlantic North East Atlantic Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer) Marine Chemistry 90 1-4 21 29 |
institution |
Open Polar |
collection |
Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer) |
op_collection_id |
ftarchimer |
language |
English |
topic |
Regeneration Atmospheric deposition Deep profile Upwelling Atlantic ocean Celtic Sea Shelf break Continental margin Mercury |
spellingShingle |
Regeneration Atmospheric deposition Deep profile Upwelling Atlantic ocean Celtic Sea Shelf break Continental margin Mercury Cossa, Daniel Cotte Krief, Marie-hélène Mason, Robert P. Bretaudeau-sanjuan, Jane Total mercury in the water column near the shelf edge of the European continental margin |
topic_facet |
Regeneration Atmospheric deposition Deep profile Upwelling Atlantic ocean Celtic Sea Shelf break Continental margin Mercury |
description |
The purpose of this paper is to investigate the distribution and the relative importance of processes that affect mercury distribution in the water column at the shelf edge of the Celtic Sea, on the western European continental margin. The water column, down to 4500 m, was sampled during two cruises, one in winter 1994 and the other in June 1995, on eight stations. Total mercury concentrations ranged from 0.29 to 9.37 pM with the extreme values in the first 200 m. The highly variable concentrations in the surface layers are attributed to intense atmospheric-sea water exchange processes. The low concentrations encountered in the shelf water prelude any significant influence of continental waters in this area. In the mixed layer, biological uptake and regenerative processes appear to dominate in controlling the vertical mercury distribution. The intermediate and deep-water mercury distribution is mainly governed by the hydrographic features. In summer, a mercury enrichment was observed in the upwelling zone of the shelf break. Mean mercury concentration in the Lower Deep Water (LDW) was typically 1.96 +/- 0.23 pM and in the Labrador Sea Water (LSW) 1.97 +/- 0.63 pM. The Mediterranean Intermediate Water (MIW) revealed similar levels, with a mean mercury concentration of 2.04 +/- 0.84 pM. Between LDW and LSW, the Iceland-Scotland Overflow Water (SOW) exhibited higher concentrations (2.76 +/- 0.35 pM). The upper part of the North East Atlantic Central Water (NEADW) and lower part of the North Atlantic Deep Water (NEACW) were characterized by marked peaks of concentration, which are interpreted in term of atmospheric influence and particle regeneration. |
format |
Article in Journal/Newspaper |
author |
Cossa, Daniel Cotte Krief, Marie-hélène Mason, Robert P. Bretaudeau-sanjuan, Jane |
author_facet |
Cossa, Daniel Cotte Krief, Marie-hélène Mason, Robert P. Bretaudeau-sanjuan, Jane |
author_sort |
Cossa, Daniel |
title |
Total mercury in the water column near the shelf edge of the European continental margin |
title_short |
Total mercury in the water column near the shelf edge of the European continental margin |
title_full |
Total mercury in the water column near the shelf edge of the European continental margin |
title_fullStr |
Total mercury in the water column near the shelf edge of the European continental margin |
title_full_unstemmed |
Total mercury in the water column near the shelf edge of the European continental margin |
title_sort |
total mercury in the water column near the shelf edge of the european continental margin |
publisher |
Elsevier |
publishDate |
2004 |
url |
https://archimer.ifremer.fr/doc/2004/publication-660.pdf https://doi.org/10.1016/j.marchem.2004.02.019 https://archimer.ifremer.fr/doc/00000/660/ |
genre |
Iceland Labrador Sea North Atlantic Deep Water North Atlantic North East Atlantic |
genre_facet |
Iceland Labrador Sea North Atlantic Deep Water North Atlantic North East Atlantic |
op_source |
Marine Chemistry (0304-4203) (Elsevier), 2004-11 , Vol. 90 , N. 1-4 , P. 21-29 |
op_relation |
https://archimer.ifremer.fr/doc/2004/publication-660.pdf doi:10.1016/j.marchem.2004.02.019 https://archimer.ifremer.fr/doc/00000/660/ |
op_rights |
2004 Elsevier B.V. All rights reserved info:eu-repo/semantics/openAccess restricted use |
op_doi |
https://doi.org/10.1016/j.marchem.2004.02.019 |
container_title |
Marine Chemistry |
container_volume |
90 |
container_issue |
1-4 |
container_start_page |
21 |
op_container_end_page |
29 |
_version_ |
1766042156113330176 |