On the variability of tidal fronts on a macrotidal continental shelf, Northern Patagonia, Argentina

Autores
Pisoni, Juan Pablo; Rivas, Andres Lujan; Piola, Alberto Ricardo
Año de publicación
2015
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Tidal fronts are associated with the transition between homogeneous and vertically stratified water and characterized by the simultaneous availability of light and nutrients that enhance the growth of marine productivity. We study the variability in the position of two tidal fronts located in Patagonia Argentina: the San Matías and Valdés fronts. The rate of tidal dissipation in these regions is among the highest of the world ocean. The study is based on the analysis of over 1200 satellite derived sea surface temperature images. The results indicate that the mean monthly position of both fronts is strongly linked to the characteristics of the bottom topography. In response to increasing surface heat flux the fronts displace toward shallower areas. Similarly, a slight displacement towards deeper waters is observed when the heat flux decreases. High frequency variability is revealed by the standard deviation around monthly averages. At the mouth of San Matías gulf, the front location variability in the spring-neap cycle is around 10 km, while east of Valdés Peninsula the fortnightly cycle is masked by high frequency fluctuations (~30 km) governed by meanders and meso-scale filaments. A simple conceptual model is proposed that suggests that the mean frontal position is determined by the bottom topography while its seasonal variability is driven by the surface heat flux, and the front intensity is modulated by the spring-neap transition.
Fil: Pisoni, Juan Pablo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico; Argentina
Fil: Rivas, Andres Lujan. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico; Argentina. Universidad Nacional de la Patagonia; Argentina
Fil: Piola, Alberto Ricardo. Ministerio de Defensa. Armada Argentina. Servicio de Hidrografía Naval; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Materia
Tidal Front
Tidal Mixing
Spring-Neap Cycle
Patagonian Shelf
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/40719
Acceder
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network_name_str CONICET Digital (CONICET)
spelling On the variability of tidal fronts on a macrotidal continental shelf, Northern Patagonia, ArgentinaPisoni, Juan PabloRivas, Andres LujanPiola, Alberto RicardoTidal FrontTidal MixingSpring-Neap CyclePatagonian Shelfhttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1Tidal fronts are associated with the transition between homogeneous and vertically stratified water and characterized by the simultaneous availability of light and nutrients that enhance the growth of marine productivity. We study the variability in the position of two tidal fronts located in Patagonia Argentina: the San Matías and Valdés fronts. The rate of tidal dissipation in these regions is among the highest of the world ocean. The study is based on the analysis of over 1200 satellite derived sea surface temperature images. The results indicate that the mean monthly position of both fronts is strongly linked to the characteristics of the bottom topography. In response to increasing surface heat flux the fronts displace toward shallower areas. Similarly, a slight displacement towards deeper waters is observed when the heat flux decreases. High frequency variability is revealed by the standard deviation around monthly averages. At the mouth of San Matías gulf, the front location variability in the spring-neap cycle is around 10 km, while east of Valdés Peninsula the fortnightly cycle is masked by high frequency fluctuations (~30 km) governed by meanders and meso-scale filaments. A simple conceptual model is proposed that suggests that the mean frontal position is determined by the bottom topography while its seasonal variability is driven by the surface heat flux, and the front intensity is modulated by the spring-neap transition.Fil: Pisoni, Juan Pablo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico; ArgentinaFil: Rivas, Andres Lujan. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico; Argentina. Universidad Nacional de la Patagonia; ArgentinaFil: Piola, Alberto Ricardo. Ministerio de Defensa. Armada Argentina. Servicio de Hidrografía Naval; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaElsevier2015-07info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/40719Pisoni, Juan Pablo; Rivas, Andres Lujan; Piola, Alberto Ricardo; On the variability of tidal fronts on a macrotidal continental shelf, Northern Patagonia, Argentina; Elsevier; Deep Sea Research Part II: Topical Studies in Oceanography; 119; 7-2015; 61-680967-0645CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0967064514000332info:eu-repo/semantics/altIdentifier/doi/10.1016/j.dsr2.2014.01.019info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:01:57Zoai:ri.conicet.gov.ar:11336/40719instacron: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:34982025-09-29 10:01:57.769CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv On the variability of tidal fronts on a macrotidal continental shelf, Northern Patagonia, Argentina
title On the variability of tidal fronts on a macrotidal continental shelf, Northern Patagonia, Argentina
spellingShingle On the variability of tidal fronts on a macrotidal continental shelf, Northern Patagonia, Argentina
Pisoni, Juan Pablo
Tidal Front
Tidal Mixing
Spring-Neap Cycle
Patagonian Shelf
title_short On the variability of tidal fronts on a macrotidal continental shelf, Northern Patagonia, Argentina
title_full On the variability of tidal fronts on a macrotidal continental shelf, Northern Patagonia, Argentina
title_fullStr On the variability of tidal fronts on a macrotidal continental shelf, Northern Patagonia, Argentina
title_full_unstemmed On the variability of tidal fronts on a macrotidal continental shelf, Northern Patagonia, Argentina
title_sort On the variability of tidal fronts on a macrotidal continental shelf, Northern Patagonia, Argentina
dc.creator.none.fl_str_mv Pisoni, Juan Pablo
Rivas, Andres Lujan
Piola, Alberto Ricardo
author Pisoni, Juan Pablo
author_facet Pisoni, Juan Pablo
Rivas, Andres Lujan
Piola, Alberto Ricardo
author_role author
author2 Rivas, Andres Lujan
Piola, Alberto Ricardo
author2_role author
author
dc.subject.none.fl_str_mv Tidal Front
Tidal Mixing
Spring-Neap Cycle
Patagonian Shelf
topic Tidal Front
Tidal Mixing
Spring-Neap Cycle
Patagonian Shelf
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Tidal fronts are associated with the transition between homogeneous and vertically stratified water and characterized by the simultaneous availability of light and nutrients that enhance the growth of marine productivity. We study the variability in the position of two tidal fronts located in Patagonia Argentina: the San Matías and Valdés fronts. The rate of tidal dissipation in these regions is among the highest of the world ocean. The study is based on the analysis of over 1200 satellite derived sea surface temperature images. The results indicate that the mean monthly position of both fronts is strongly linked to the characteristics of the bottom topography. In response to increasing surface heat flux the fronts displace toward shallower areas. Similarly, a slight displacement towards deeper waters is observed when the heat flux decreases. High frequency variability is revealed by the standard deviation around monthly averages. At the mouth of San Matías gulf, the front location variability in the spring-neap cycle is around 10 km, while east of Valdés Peninsula the fortnightly cycle is masked by high frequency fluctuations (~30 km) governed by meanders and meso-scale filaments. A simple conceptual model is proposed that suggests that the mean frontal position is determined by the bottom topography while its seasonal variability is driven by the surface heat flux, and the front intensity is modulated by the spring-neap transition.
Fil: Pisoni, Juan Pablo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico; Argentina
Fil: Rivas, Andres Lujan. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico; Argentina. Universidad Nacional de la Patagonia; Argentina
Fil: Piola, Alberto Ricardo. Ministerio de Defensa. Armada Argentina. Servicio de Hidrografía Naval; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
description Tidal fronts are associated with the transition between homogeneous and vertically stratified water and characterized by the simultaneous availability of light and nutrients that enhance the growth of marine productivity. We study the variability in the position of two tidal fronts located in Patagonia Argentina: the San Matías and Valdés fronts. The rate of tidal dissipation in these regions is among the highest of the world ocean. The study is based on the analysis of over 1200 satellite derived sea surface temperature images. The results indicate that the mean monthly position of both fronts is strongly linked to the characteristics of the bottom topography. In response to increasing surface heat flux the fronts displace toward shallower areas. Similarly, a slight displacement towards deeper waters is observed when the heat flux decreases. High frequency variability is revealed by the standard deviation around monthly averages. At the mouth of San Matías gulf, the front location variability in the spring-neap cycle is around 10 km, while east of Valdés Peninsula the fortnightly cycle is masked by high frequency fluctuations (~30 km) governed by meanders and meso-scale filaments. A simple conceptual model is proposed that suggests that the mean frontal position is determined by the bottom topography while its seasonal variability is driven by the surface heat flux, and the front intensity is modulated by the spring-neap transition.
publishDate 2015
dc.date.none.fl_str_mv 2015-07
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
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/40719
Pisoni, Juan Pablo; Rivas, Andres Lujan; Piola, Alberto Ricardo; On the variability of tidal fronts on a macrotidal continental shelf, Northern Patagonia, Argentina; Elsevier; Deep Sea Research Part II: Topical Studies in Oceanography; 119; 7-2015; 61-68
0967-0645
CONICET Digital
CONICET
url http://hdl.handle.net/11336/40719
identifier_str_mv Pisoni, Juan Pablo; Rivas, Andres Lujan; Piola, Alberto Ricardo; On the variability of tidal fronts on a macrotidal continental shelf, Northern Patagonia, Argentina; Elsevier; Deep Sea Research Part II: Topical Studies in Oceanography; 119; 7-2015; 61-68
0967-0645
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0967064514000332
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.dsr2.2014.01.019
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 13.070432

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