High-frequency frontal displacements south of san jorge gulf during a tidal cycle near spring and neap phases biological implications between tidal states
- Autores
- Carbajal, Juan Cruz; Rivas, Andres Lujan; Chavanne, Cédric
- Año de publicación
- 2018
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- San Jorge Gulf (SJG) is a region of high biological productivity that supports important shrimp (Pleoticus muelleri) and hake (Merluccius hubbsi) fisheries, as well as high marine biodiversity associated, in part, with a tidal front located in the southern part of the gulf. In situ high-resolution cross-frontal measurements were collected using a remotely operated towed vehicle to characterize the three-dimensional structure of the tidal front and to investigate how its position varies during the semidiurnal tidal cycle (high/low) and the spring to neap transition, together with its impact on the distribution of nutrients and chlorophyll-a. Estimates of tidal height and flow velocity derived from a numerical model support the conclusion that frontal displacements mostly result from advec-tion by cross-frontal tidal currents. The frontal position was also modified by baroclinic instabilities that significantly distort the front. Measurements reveal intrusions of low-salinity, nutrient-rich waters from the mixed side into the pycnocline on the stratified side cause a subsurface chlorophyll-a peak near the neap phase. Most prior studies of fronts in the SJG have been limited to their surface manifestations because they were conducted using satellite images. This article aims to contribute to the understanding of the complex southern tidal front dynamics, highlighting that maximum primary productivity occurs in a subsurface layer that is not visible by satellite sensors.
Fil: Carbajal, Juan Cruz. Centro Para El Estudio de Sistemas Marinos (cesimar), Conicet-cenpat; Argentina
Fil: Rivas, Andres Lujan. Centro Para El Estudio de Sistemas Marinos (cesimar), Conicet-cenpat; Argentina
Fil: Chavanne, Cédric. Institut Des Sciences de la Mer de Rimouski; Canadá - Materia
-
tidal front
subsurface intrusion
spring/neap transitions
rich-nutrient waters - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
- Repositorio
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/92660
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High-frequency frontal displacements south of san jorge gulf during a tidal cycle near spring and neap phases biological implications between tidal statesCarbajal, Juan CruzRivas, Andres LujanChavanne, Cédrictidal frontsubsurface intrusionspring/neap transitionsrich-nutrient watershttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1San Jorge Gulf (SJG) is a region of high biological productivity that supports important shrimp (Pleoticus muelleri) and hake (Merluccius hubbsi) fisheries, as well as high marine biodiversity associated, in part, with a tidal front located in the southern part of the gulf. In situ high-resolution cross-frontal measurements were collected using a remotely operated towed vehicle to characterize the three-dimensional structure of the tidal front and to investigate how its position varies during the semidiurnal tidal cycle (high/low) and the spring to neap transition, together with its impact on the distribution of nutrients and chlorophyll-a. Estimates of tidal height and flow velocity derived from a numerical model support the conclusion that frontal displacements mostly result from advec-tion by cross-frontal tidal currents. The frontal position was also modified by baroclinic instabilities that significantly distort the front. Measurements reveal intrusions of low-salinity, nutrient-rich waters from the mixed side into the pycnocline on the stratified side cause a subsurface chlorophyll-a peak near the neap phase. Most prior studies of fronts in the SJG have been limited to their surface manifestations because they were conducted using satellite images. This article aims to contribute to the understanding of the complex southern tidal front dynamics, highlighting that maximum primary productivity occurs in a subsurface layer that is not visible by satellite sensors.Fil: Carbajal, Juan Cruz. Centro Para El Estudio de Sistemas Marinos (cesimar), Conicet-cenpat; ArgentinaFil: Rivas, Andres Lujan. Centro Para El Estudio de Sistemas Marinos (cesimar), Conicet-cenpat; ArgentinaFil: Chavanne, Cédric. Institut Des Sciences de la Mer de Rimouski; CanadáOceanography Society2018-12info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/92660Carbajal, Juan Cruz; Rivas, Andres Lujan; Chavanne, Cédric; High-frequency frontal displacements south of san jorge gulf during a tidal cycle near spring and neap phases biological implications between tidal states; Oceanography Society; Oceanography; 31; 4; 12-2018; 60-691042-8275CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.5670/oceanog.2018.411info:eu-repo/semantics/altIdentifier/url/https://tos.org/oceanography/article/high-frequency-frontal-displacements-south-of-san-jorge-gulf-during-a-tidalinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T10:10:25Zoai:ri.conicet.gov.ar:11336/92660instacron: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 10:10:25.489CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
dc.title.none.fl_str_mv |
High-frequency frontal displacements south of san jorge gulf during a tidal cycle near spring and neap phases biological implications between tidal states |
title |
High-frequency frontal displacements south of san jorge gulf during a tidal cycle near spring and neap phases biological implications between tidal states |
spellingShingle |
High-frequency frontal displacements south of san jorge gulf during a tidal cycle near spring and neap phases biological implications between tidal states Carbajal, Juan Cruz tidal front subsurface intrusion spring/neap transitions rich-nutrient waters |
title_short |
High-frequency frontal displacements south of san jorge gulf during a tidal cycle near spring and neap phases biological implications between tidal states |
title_full |
High-frequency frontal displacements south of san jorge gulf during a tidal cycle near spring and neap phases biological implications between tidal states |
title_fullStr |
High-frequency frontal displacements south of san jorge gulf during a tidal cycle near spring and neap phases biological implications between tidal states |
title_full_unstemmed |
High-frequency frontal displacements south of san jorge gulf during a tidal cycle near spring and neap phases biological implications between tidal states |
title_sort |
High-frequency frontal displacements south of san jorge gulf during a tidal cycle near spring and neap phases biological implications between tidal states |
dc.creator.none.fl_str_mv |
Carbajal, Juan Cruz Rivas, Andres Lujan Chavanne, Cédric |
author |
Carbajal, Juan Cruz |
author_facet |
Carbajal, Juan Cruz Rivas, Andres Lujan Chavanne, Cédric |
author_role |
author |
author2 |
Rivas, Andres Lujan Chavanne, Cédric |
author2_role |
author author |
dc.subject.none.fl_str_mv |
tidal front subsurface intrusion spring/neap transitions rich-nutrient waters |
topic |
tidal front subsurface intrusion spring/neap transitions rich-nutrient waters |
purl_subject.fl_str_mv |
https://purl.org/becyt/ford/1.5 https://purl.org/becyt/ford/1 |
dc.description.none.fl_txt_mv |
San Jorge Gulf (SJG) is a region of high biological productivity that supports important shrimp (Pleoticus muelleri) and hake (Merluccius hubbsi) fisheries, as well as high marine biodiversity associated, in part, with a tidal front located in the southern part of the gulf. In situ high-resolution cross-frontal measurements were collected using a remotely operated towed vehicle to characterize the three-dimensional structure of the tidal front and to investigate how its position varies during the semidiurnal tidal cycle (high/low) and the spring to neap transition, together with its impact on the distribution of nutrients and chlorophyll-a. Estimates of tidal height and flow velocity derived from a numerical model support the conclusion that frontal displacements mostly result from advec-tion by cross-frontal tidal currents. The frontal position was also modified by baroclinic instabilities that significantly distort the front. Measurements reveal intrusions of low-salinity, nutrient-rich waters from the mixed side into the pycnocline on the stratified side cause a subsurface chlorophyll-a peak near the neap phase. Most prior studies of fronts in the SJG have been limited to their surface manifestations because they were conducted using satellite images. This article aims to contribute to the understanding of the complex southern tidal front dynamics, highlighting that maximum primary productivity occurs in a subsurface layer that is not visible by satellite sensors. Fil: Carbajal, Juan Cruz. Centro Para El Estudio de Sistemas Marinos (cesimar), Conicet-cenpat; Argentina Fil: Rivas, Andres Lujan. Centro Para El Estudio de Sistemas Marinos (cesimar), Conicet-cenpat; Argentina Fil: Chavanne, Cédric. Institut Des Sciences de la Mer de Rimouski; Canadá |
description |
San Jorge Gulf (SJG) is a region of high biological productivity that supports important shrimp (Pleoticus muelleri) and hake (Merluccius hubbsi) fisheries, as well as high marine biodiversity associated, in part, with a tidal front located in the southern part of the gulf. In situ high-resolution cross-frontal measurements were collected using a remotely operated towed vehicle to characterize the three-dimensional structure of the tidal front and to investigate how its position varies during the semidiurnal tidal cycle (high/low) and the spring to neap transition, together with its impact on the distribution of nutrients and chlorophyll-a. Estimates of tidal height and flow velocity derived from a numerical model support the conclusion that frontal displacements mostly result from advec-tion by cross-frontal tidal currents. The frontal position was also modified by baroclinic instabilities that significantly distort the front. Measurements reveal intrusions of low-salinity, nutrient-rich waters from the mixed side into the pycnocline on the stratified side cause a subsurface chlorophyll-a peak near the neap phase. Most prior studies of fronts in the SJG have been limited to their surface manifestations because they were conducted using satellite images. This article aims to contribute to the understanding of the complex southern tidal front dynamics, highlighting that maximum primary productivity occurs in a subsurface layer that is not visible by satellite sensors. |
publishDate |
2018 |
dc.date.none.fl_str_mv |
2018-12 |
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/11336/92660 Carbajal, Juan Cruz; Rivas, Andres Lujan; Chavanne, Cédric; High-frequency frontal displacements south of san jorge gulf during a tidal cycle near spring and neap phases biological implications between tidal states; Oceanography Society; Oceanography; 31; 4; 12-2018; 60-69 1042-8275 CONICET Digital CONICET |
url |
http://hdl.handle.net/11336/92660 |
identifier_str_mv |
Carbajal, Juan Cruz; Rivas, Andres Lujan; Chavanne, Cédric; High-frequency frontal displacements south of san jorge gulf during a tidal cycle near spring and neap phases biological implications between tidal states; Oceanography Society; Oceanography; 31; 4; 12-2018; 60-69 1042-8275 CONICET Digital CONICET |
dc.language.none.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/doi/10.5670/oceanog.2018.411 info:eu-repo/semantics/altIdentifier/url/https://tos.org/oceanography/article/high-frequency-frontal-displacements-south-of-san-jorge-gulf-during-a-tidal |
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 |
dc.publisher.none.fl_str_mv |
Oceanography Society |
publisher.none.fl_str_mv |
Oceanography Society |
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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1842270118959120384 |
score |
13.13397 |