Tidally induced variations of ph at the head of the laurentian channel
- Autores
- Mucci, Alfonso; Levasseur, Maurice; Gratton, Yves; Martias, Chloé; Scarratt, Michael; Gilbert, Denis; Tremblay, Jean-Éric; Ferreyra, Gustavo Adolfo; Lansard, Bruno
- Año de publicación
- 2017
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- The head of the Laurentian Channel is a very dynamic region of exceptional biological richness. To evaluate the impact of freshwater discharge, tidal mixing, and biological activity on the pH of surface waters in this region, a suite of physical and chemical variables was measured throughout the water column over two tidal cycles. The relative contributions to the water column of the four source-water types that converge in this region were evaluated using an optimum multiparameter algorithm (OMP). Results of the OMP analysis were used to reconstruct the water column properties assuming conservative mixing, and the difference between the model properties and field measurements served to identify factors that control the pH of the surface waters. These surface waters are generally undersaturated with respect to aragonite, mostly due to the intrusion of waters from the Upper St. Lawrence Estuary and the Saguenay Fjord. The presence of a cold intermediate layer impedes the upwelling of the deeper, hypoxic, lower pH and aragonite-undersaturated waters of the Lower St. Lawrence Estuary to depths shallower than 50 m.
Fil: Mucci, Alfonso. McGill University; Canadá
Fil: Levasseur, Maurice. Laval University; Canadá
Fil: Gratton, Yves. Institut National de la Recherche Scientifique; Canadá
Fil: Martias, Chloé. McGill University; Canadá
Fil: Scarratt, Michael. Institut Maurice Lamontagne; Canadá
Fil: Gilbert, Denis. Institut Maurice Lamontagne; Canadá
Fil: Tremblay, Jean-Éric. Laval University; Canadá
Fil: Ferreyra, Gustavo Adolfo. Institut Des Sciences de la Mer de Rimouski; Canadá. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; Argentina
Fil: Lansard, Bruno. Laboratoire des Sciences du Climat et de l’Environnement, avenue de la Terrasse; Canadá - Materia
- Ph
- Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
- Repositorio
.jpg)
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/63671
Ver los metadatos del registro completo
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Tidally induced variations of ph at the head of the laurentian channelMucci, AlfonsoLevasseur, MauriceGratton, YvesMartias, ChloéScarratt, MichaelGilbert, DenisTremblay, Jean-ÉricFerreyra, Gustavo AdolfoLansard, BrunoPhhttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1The head of the Laurentian Channel is a very dynamic region of exceptional biological richness. To evaluate the impact of freshwater discharge, tidal mixing, and biological activity on the pH of surface waters in this region, a suite of physical and chemical variables was measured throughout the water column over two tidal cycles. The relative contributions to the water column of the four source-water types that converge in this region were evaluated using an optimum multiparameter algorithm (OMP). Results of the OMP analysis were used to reconstruct the water column properties assuming conservative mixing, and the difference between the model properties and field measurements served to identify factors that control the pH of the surface waters. These surface waters are generally undersaturated with respect to aragonite, mostly due to the intrusion of waters from the Upper St. Lawrence Estuary and the Saguenay Fjord. The presence of a cold intermediate layer impedes the upwelling of the deeper, hypoxic, lower pH and aragonite-undersaturated waters of the Lower St. Lawrence Estuary to depths shallower than 50 m.Fil: Mucci, Alfonso. McGill University; CanadáFil: Levasseur, Maurice. Laval University; CanadáFil: Gratton, Yves. Institut National de la Recherche Scientifique; CanadáFil: Martias, Chloé. McGill University; CanadáFil: Scarratt, Michael. Institut Maurice Lamontagne; CanadáFil: Gilbert, Denis. Institut Maurice Lamontagne; CanadáFil: Tremblay, Jean-Éric. Laval University; CanadáFil: Ferreyra, Gustavo Adolfo. Institut Des Sciences de la Mer de Rimouski; Canadá. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; ArgentinaFil: Lansard, Bruno. Laboratoire des Sciences du Climat et de l’Environnement, avenue de la Terrasse; CanadáNational Research Council Canada-NRC Research Press2017-09info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/63671Mucci, Alfonso; Levasseur, Maurice; Gratton, Yves; Martias, Chloé; Scarratt, Michael; et al.; Tidally induced variations of ph at the head of the laurentian channel; National Research Council Canada-NRC Research Press; Canadian Journal Of Fisheries And Aquatic Sciences; 75; 7; 9-2017; 1128-11410706-652X1128-1141CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/http://www.nrcresearchpress.com/doi/10.1139/cjfas-2017-0007info:eu-repo/semantics/altIdentifier/doi/10.1139/cjfas-2017-0007info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T09:50:28Zoai:ri.conicet.gov.ar:11336/63671instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-03 09:50:29.046CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
| dc.title.none.fl_str_mv |
Tidally induced variations of ph at the head of the laurentian channel |
| title |
Tidally induced variations of ph at the head of the laurentian channel |
| spellingShingle |
Tidally induced variations of ph at the head of the laurentian channel Mucci, Alfonso Ph |
| title_short |
Tidally induced variations of ph at the head of the laurentian channel |
| title_full |
Tidally induced variations of ph at the head of the laurentian channel |
| title_fullStr |
Tidally induced variations of ph at the head of the laurentian channel |
| title_full_unstemmed |
Tidally induced variations of ph at the head of the laurentian channel |
| title_sort |
Tidally induced variations of ph at the head of the laurentian channel |
| dc.creator.none.fl_str_mv |
Mucci, Alfonso Levasseur, Maurice Gratton, Yves Martias, Chloé Scarratt, Michael Gilbert, Denis Tremblay, Jean-Éric Ferreyra, Gustavo Adolfo Lansard, Bruno |
| author |
Mucci, Alfonso |
| author_facet |
Mucci, Alfonso Levasseur, Maurice Gratton, Yves Martias, Chloé Scarratt, Michael Gilbert, Denis Tremblay, Jean-Éric Ferreyra, Gustavo Adolfo Lansard, Bruno |
| author_role |
author |
| author2 |
Levasseur, Maurice Gratton, Yves Martias, Chloé Scarratt, Michael Gilbert, Denis Tremblay, Jean-Éric Ferreyra, Gustavo Adolfo Lansard, Bruno |
| author2_role |
author author author author author author author author |
| dc.subject.none.fl_str_mv |
Ph |
| topic |
Ph |
| purl_subject.fl_str_mv |
https://purl.org/becyt/ford/1.5 https://purl.org/becyt/ford/1 |
| dc.description.none.fl_txt_mv |
The head of the Laurentian Channel is a very dynamic region of exceptional biological richness. To evaluate the impact of freshwater discharge, tidal mixing, and biological activity on the pH of surface waters in this region, a suite of physical and chemical variables was measured throughout the water column over two tidal cycles. The relative contributions to the water column of the four source-water types that converge in this region were evaluated using an optimum multiparameter algorithm (OMP). Results of the OMP analysis were used to reconstruct the water column properties assuming conservative mixing, and the difference between the model properties and field measurements served to identify factors that control the pH of the surface waters. These surface waters are generally undersaturated with respect to aragonite, mostly due to the intrusion of waters from the Upper St. Lawrence Estuary and the Saguenay Fjord. The presence of a cold intermediate layer impedes the upwelling of the deeper, hypoxic, lower pH and aragonite-undersaturated waters of the Lower St. Lawrence Estuary to depths shallower than 50 m. Fil: Mucci, Alfonso. McGill University; Canadá Fil: Levasseur, Maurice. Laval University; Canadá Fil: Gratton, Yves. Institut National de la Recherche Scientifique; Canadá Fil: Martias, Chloé. McGill University; Canadá Fil: Scarratt, Michael. Institut Maurice Lamontagne; Canadá Fil: Gilbert, Denis. Institut Maurice Lamontagne; Canadá Fil: Tremblay, Jean-Éric. Laval University; Canadá Fil: Ferreyra, Gustavo Adolfo. Institut Des Sciences de la Mer de Rimouski; Canadá. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; Argentina Fil: Lansard, Bruno. Laboratoire des Sciences du Climat et de l’Environnement, avenue de la Terrasse; Canadá |
| description |
The head of the Laurentian Channel is a very dynamic region of exceptional biological richness. To evaluate the impact of freshwater discharge, tidal mixing, and biological activity on the pH of surface waters in this region, a suite of physical and chemical variables was measured throughout the water column over two tidal cycles. The relative contributions to the water column of the four source-water types that converge in this region were evaluated using an optimum multiparameter algorithm (OMP). Results of the OMP analysis were used to reconstruct the water column properties assuming conservative mixing, and the difference between the model properties and field measurements served to identify factors that control the pH of the surface waters. These surface waters are generally undersaturated with respect to aragonite, mostly due to the intrusion of waters from the Upper St. Lawrence Estuary and the Saguenay Fjord. The presence of a cold intermediate layer impedes the upwelling of the deeper, hypoxic, lower pH and aragonite-undersaturated waters of the Lower St. Lawrence Estuary to depths shallower than 50 m. |
| publishDate |
2017 |
| dc.date.none.fl_str_mv |
2017-09 |
| dc.type.none.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://purl.org/coar/resource_type/c_6501 info:ar-repo/semantics/articulo |
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article |
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publishedVersion |
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http://hdl.handle.net/11336/63671 Mucci, Alfonso; Levasseur, Maurice; Gratton, Yves; Martias, Chloé; Scarratt, Michael; et al.; Tidally induced variations of ph at the head of the laurentian channel; National Research Council Canada-NRC Research Press; Canadian Journal Of Fisheries And Aquatic Sciences; 75; 7; 9-2017; 1128-1141 0706-652X 1128-1141 CONICET Digital CONICET |
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http://hdl.handle.net/11336/63671 |
| identifier_str_mv |
Mucci, Alfonso; Levasseur, Maurice; Gratton, Yves; Martias, Chloé; Scarratt, Michael; et al.; Tidally induced variations of ph at the head of the laurentian channel; National Research Council Canada-NRC Research Press; Canadian Journal Of Fisheries And Aquatic Sciences; 75; 7; 9-2017; 1128-1141 0706-652X 1128-1141 CONICET Digital CONICET |
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eng |
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eng |
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info:eu-repo/semantics/altIdentifier/url/http://www.nrcresearchpress.com/doi/10.1139/cjfas-2017-0007 info:eu-repo/semantics/altIdentifier/doi/10.1139/cjfas-2017-0007 |
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application/pdf application/pdf application/pdf |
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National Research Council Canada-NRC Research Press |
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National Research Council Canada-NRC Research Press |
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reponame:CONICET Digital (CONICET) instname:Consejo Nacional de Investigaciones Científicas y Técnicas |
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dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar |
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