Metal fluxes through the Strait of Gibraltar: the influence of the Tinto and Odiel rivers (SW Spain)
peer reviewed A large set of new data concerning dissolved metal concentrations has been acquired in the Gulf of Cadiz and in the Strait of Gibraltar from 1996 to 1999. These data, associated with models (hydrodynamic, tracer advection-dispersion and mixing), have been used to assess the influence o...
Published in: | Marine Chemistry |
---|---|
Main Authors: | , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Elsevier Science
2001
|
Subjects: | |
Online Access: | https://orbi.uliege.be/handle/2268/9263 https://doi.org/10.1016/S0304-4203(00)00106-7 |
id |
ftorbi:oai:orbi.ulg.ac.be:2268/9263 |
---|---|
record_format |
openpolar |
spelling |
ftorbi:oai:orbi.ulg.ac.be:2268/9263 2024-04-21T08:07:46+00:00 Metal fluxes through the Strait of Gibraltar: the influence of the Tinto and Odiel rivers (SW Spain) Elbaz-Poulichet, F. Morley, N. H. Beckers, Jean-Marie Nomerange, P. 2001 https://orbi.uliege.be/handle/2268/9263 https://doi.org/10.1016/S0304-4203(00)00106-7 en eng Elsevier Science urn:issn:0304-4203 https://orbi.uliege.be/handle/2268/9263 info:hdl:2268/9263 doi:10.1016/S0304-4203(00)00106-7 scopus-id:2-s2.0-0035124773 restricted access http://purl.org/coar/access_right/c_16ec info:eu-repo/semantics/restrictedAccess Marine Chemistry, 73 (3-4), 193-213 (2001) Gulf of Cadiz fluxes Strait of Gibraltar Tinto/Odiel rivers Mediterranean Sea Atlantic Ocean dissolved trace metals Physical chemical mathematical & earth Sciences Chemistry Earth sciences & physical geography Physique chimie mathématiques & sciences de la terre Sciences de la terre & géographie physique journal article http://purl.org/coar/resource_type/c_6501 info:eu-repo/semantics/article peer reviewed 2001 ftorbi https://doi.org/10.1016/S0304-4203(00)00106-7 2024-03-27T14:56:04Z peer reviewed A large set of new data concerning dissolved metal concentrations has been acquired in the Gulf of Cadiz and in the Strait of Gibraltar from 1996 to 1999. These data, associated with models (hydrodynamic, tracer advection-dispersion and mixing), have been used to assess the influence of rivers draining the South Iberian Pyrite Belt on the Gulf of Cadiz and on the Atlantic inflow in the Strait of Gibraltar. Metal concentrations in surface waters from the Gulf of Cadiz are maximal near the mouth of the Tinto/Odiel rivers with values exceeding 50 nmol/kg (Mn), 5 nmol/kg (Ni), 30 nmol/kg (Cu), 100 nmol/kg (Zn), 0.9 nmol/kg (Cd) and 45 nmol/kg (As). From the Tinto/Odiel river, a plume of contamination follows the coast in the direction of the Strait of Gibraltar. The computation of a tracer advection-dispersion model confirms that the coastal currents carry the metals discharged from the Tinto and Odiel to the Strait of Gibraltar. From temperature-salinity and metal-salinity plots, four water masses can be recognised in the Gulf of Cadiz and in the Strait of Gibraltar: North Atlantic Surface Water (NASW), North Atlantic Central Water (NACW) and metal-enriched Spanish Shelf Waters from the Gulf of Cadiz (SSW). The Mediterranean Outflow Water (MOW) is also clearly seen at depths greater than 300 m. The chemical characteristics of these various water masses have been used in a mixing model to evaluate their relative contribution to the Atlantic inflow through the Strait of Gibraltar. These contributions are seasonally variable. in June 1997, the contribution was: 80 +/- 20%, 5 +/- 5% and 15 +/- 10% for NASW, NACW and SSW, respectively. In September, the SSW contribution was apparently negligible. Finally, these relative contributions allow the evaluation of the metal fluxes in the Strait of Gibraltar. The presence of SSW in the Strait increases the metal flux to the Mediterranean Sea by a factor of 2.3 (Cu), 2.4 (Cd), 3 (Zn) and 7 (Mn). It does not modify significantly As and Ni fluxes. (C) 2001 ... Article in Journal/Newspaper North Atlantic University of Liège: ORBi (Open Repository and Bibliography) Marine Chemistry 73 3-4 193 213 |
institution |
Open Polar |
collection |
University of Liège: ORBi (Open Repository and Bibliography) |
op_collection_id |
ftorbi |
language |
English |
topic |
Gulf of Cadiz fluxes Strait of Gibraltar Tinto/Odiel rivers Mediterranean Sea Atlantic Ocean dissolved trace metals Physical chemical mathematical & earth Sciences Chemistry Earth sciences & physical geography Physique chimie mathématiques & sciences de la terre Sciences de la terre & géographie physique |
spellingShingle |
Gulf of Cadiz fluxes Strait of Gibraltar Tinto/Odiel rivers Mediterranean Sea Atlantic Ocean dissolved trace metals Physical chemical mathematical & earth Sciences Chemistry Earth sciences & physical geography Physique chimie mathématiques & sciences de la terre Sciences de la terre & géographie physique Elbaz-Poulichet, F. Morley, N. H. Beckers, Jean-Marie Nomerange, P. Metal fluxes through the Strait of Gibraltar: the influence of the Tinto and Odiel rivers (SW Spain) |
topic_facet |
Gulf of Cadiz fluxes Strait of Gibraltar Tinto/Odiel rivers Mediterranean Sea Atlantic Ocean dissolved trace metals Physical chemical mathematical & earth Sciences Chemistry Earth sciences & physical geography Physique chimie mathématiques & sciences de la terre Sciences de la terre & géographie physique |
description |
peer reviewed A large set of new data concerning dissolved metal concentrations has been acquired in the Gulf of Cadiz and in the Strait of Gibraltar from 1996 to 1999. These data, associated with models (hydrodynamic, tracer advection-dispersion and mixing), have been used to assess the influence of rivers draining the South Iberian Pyrite Belt on the Gulf of Cadiz and on the Atlantic inflow in the Strait of Gibraltar. Metal concentrations in surface waters from the Gulf of Cadiz are maximal near the mouth of the Tinto/Odiel rivers with values exceeding 50 nmol/kg (Mn), 5 nmol/kg (Ni), 30 nmol/kg (Cu), 100 nmol/kg (Zn), 0.9 nmol/kg (Cd) and 45 nmol/kg (As). From the Tinto/Odiel river, a plume of contamination follows the coast in the direction of the Strait of Gibraltar. The computation of a tracer advection-dispersion model confirms that the coastal currents carry the metals discharged from the Tinto and Odiel to the Strait of Gibraltar. From temperature-salinity and metal-salinity plots, four water masses can be recognised in the Gulf of Cadiz and in the Strait of Gibraltar: North Atlantic Surface Water (NASW), North Atlantic Central Water (NACW) and metal-enriched Spanish Shelf Waters from the Gulf of Cadiz (SSW). The Mediterranean Outflow Water (MOW) is also clearly seen at depths greater than 300 m. The chemical characteristics of these various water masses have been used in a mixing model to evaluate their relative contribution to the Atlantic inflow through the Strait of Gibraltar. These contributions are seasonally variable. in June 1997, the contribution was: 80 +/- 20%, 5 +/- 5% and 15 +/- 10% for NASW, NACW and SSW, respectively. In September, the SSW contribution was apparently negligible. Finally, these relative contributions allow the evaluation of the metal fluxes in the Strait of Gibraltar. The presence of SSW in the Strait increases the metal flux to the Mediterranean Sea by a factor of 2.3 (Cu), 2.4 (Cd), 3 (Zn) and 7 (Mn). It does not modify significantly As and Ni fluxes. (C) 2001 ... |
format |
Article in Journal/Newspaper |
author |
Elbaz-Poulichet, F. Morley, N. H. Beckers, Jean-Marie Nomerange, P. |
author_facet |
Elbaz-Poulichet, F. Morley, N. H. Beckers, Jean-Marie Nomerange, P. |
author_sort |
Elbaz-Poulichet, F. |
title |
Metal fluxes through the Strait of Gibraltar: the influence of the Tinto and Odiel rivers (SW Spain) |
title_short |
Metal fluxes through the Strait of Gibraltar: the influence of the Tinto and Odiel rivers (SW Spain) |
title_full |
Metal fluxes through the Strait of Gibraltar: the influence of the Tinto and Odiel rivers (SW Spain) |
title_fullStr |
Metal fluxes through the Strait of Gibraltar: the influence of the Tinto and Odiel rivers (SW Spain) |
title_full_unstemmed |
Metal fluxes through the Strait of Gibraltar: the influence of the Tinto and Odiel rivers (SW Spain) |
title_sort |
metal fluxes through the strait of gibraltar: the influence of the tinto and odiel rivers (sw spain) |
publisher |
Elsevier Science |
publishDate |
2001 |
url |
https://orbi.uliege.be/handle/2268/9263 https://doi.org/10.1016/S0304-4203(00)00106-7 |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
Marine Chemistry, 73 (3-4), 193-213 (2001) |
op_relation |
urn:issn:0304-4203 https://orbi.uliege.be/handle/2268/9263 info:hdl:2268/9263 doi:10.1016/S0304-4203(00)00106-7 scopus-id:2-s2.0-0035124773 |
op_rights |
restricted access http://purl.org/coar/access_right/c_16ec info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1016/S0304-4203(00)00106-7 |
container_title |
Marine Chemistry |
container_volume |
73 |
container_issue |
3-4 |
container_start_page |
193 |
op_container_end_page |
213 |
_version_ |
1796947810724085760 |