Particle dynamics in Ushuaia Bay (Tierra del Fuego)-Potential effect on dissolved oxygen depletion

Autores
Flores Melo, Elizabeth Ximena; Martín de Nascimento, Jacobo; Kerdel, Lounes; François, Bourrin; Colloca, Cristina Beatriz; Menniti, Chirstophe; Durrieu de Madron, Xavier
Año de publicación
2020
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
This study examines the distribution and seasonal evolution of hydrographic, hydrodynamic, and nepheloid layers in Ushuaia Bay and the submerged glacial valley that connects it to the Beagle Channel. The hydrographic structure is highly seasonal, with a total mixing of the water column in winter and the appearance of a pycnocline between 50 and 70 m deep from spring to late autumn, mainly due to desalination. A counter-clockwise current sweeps the entire bay regardless of the season or phase of the tide. This current is at its maximum in the surface layer, allowing the rapid renewal of the bay's waters, while deep currents are weak and imply a slow renewal of the valley's waters. Turbid and oxygen-depleted structures are observed in summer in the valley. The combination of seasonal stratification, high organic matter inputs from planktonic production, oxygen consumption for remineralization, and sluggish circulation results in a decrease in near-bottom oxygen concentration in the glacial valley at the end of the stratified season, before mixing and re-oxygenation of the water column during the southern winter. The possible impact of dissolved oxygen depletion in the bottom waters of the valley on benthic organisms, like crustaceans, is discussed.
Fil: Flores Melo, Elizabeth Ximena. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; Argentina
Fil: Martín de Nascimento, Jacobo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; Argentina
Fil: Kerdel, Lounes. Centre National de la Recherche Scientifique; Francia
Fil: François, Bourrin. Centre National de la Recherche Scientifique; Francia
Fil: Colloca, Cristina Beatriz. Universidad Nacional de Tierra del Fuego. Instituto de Ciencias Polares, Recursos Naturales y Ambiente; Argentina
Fil: Menniti, Chirstophe. Centre National de la Recherche Scientifique; Francia
Fil: Durrieu de Madron, Xavier. Centre National de la Recherche Scientifique; Francia
Materia
BEAGLE CHANNEL
HYDROLOGY
HYPOXIA
SUSPENDED PARTICULATE MATTER
USHUAIA BAY
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:11336/141557
Acceder
id CONICETDig_abd1dea6faa8a00aa1fc11a0a11b446d
oai_identifier_str oai:ri.conicet.gov.ar:11336/141557
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Particle dynamics in Ushuaia Bay (Tierra del Fuego)-Potential effect on dissolved oxygen depletionFlores Melo, Elizabeth XimenaMartín de Nascimento, JacoboKerdel, LounesFrançois, BourrinColloca, Cristina BeatrizMenniti, ChirstopheDurrieu de Madron, XavierBEAGLE CHANNELHYDROLOGYHYPOXIASUSPENDED PARTICULATE MATTERUSHUAIA BAYhttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1This study examines the distribution and seasonal evolution of hydrographic, hydrodynamic, and nepheloid layers in Ushuaia Bay and the submerged glacial valley that connects it to the Beagle Channel. The hydrographic structure is highly seasonal, with a total mixing of the water column in winter and the appearance of a pycnocline between 50 and 70 m deep from spring to late autumn, mainly due to desalination. A counter-clockwise current sweeps the entire bay regardless of the season or phase of the tide. This current is at its maximum in the surface layer, allowing the rapid renewal of the bay's waters, while deep currents are weak and imply a slow renewal of the valley's waters. Turbid and oxygen-depleted structures are observed in summer in the valley. The combination of seasonal stratification, high organic matter inputs from planktonic production, oxygen consumption for remineralization, and sluggish circulation results in a decrease in near-bottom oxygen concentration in the glacial valley at the end of the stratified season, before mixing and re-oxygenation of the water column during the southern winter. The possible impact of dissolved oxygen depletion in the bottom waters of the valley on benthic organisms, like crustaceans, is discussed.Fil: Flores Melo, Elizabeth Ximena. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; ArgentinaFil: Martín de Nascimento, Jacobo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; ArgentinaFil: Kerdel, Lounes. Centre National de la Recherche Scientifique; FranciaFil: François, Bourrin. Centre National de la Recherche Scientifique; FranciaFil: Colloca, Cristina Beatriz. Universidad Nacional de Tierra del Fuego. Instituto de Ciencias Polares, Recursos Naturales y Ambiente; ArgentinaFil: Menniti, Chirstophe. Centre National de la Recherche Scientifique; FranciaFil: Durrieu de Madron, Xavier. Centre National de la Recherche Scientifique; FranciaMolecular Diversity Preservation International2020-02info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/141557Flores Melo, Elizabeth Ximena; Martín de Nascimento, Jacobo; Kerdel, Lounes; François, Bourrin; Colloca, Cristina Beatriz; et al.; Particle dynamics in Ushuaia Bay (Tierra del Fuego)-Potential effect on dissolved oxygen depletion; Molecular Diversity Preservation International; Water; 12; 2; 2-2020; 3242073-4441CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://www.mdpi.com/2073-4441/12/2/324info:eu-repo/semantics/altIdentifier/doi/10.3390/w12020324info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T09:59:55Zoai:ri.conicet.gov.ar:11336/141557instacron: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 09:59:55.93CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Particle dynamics in Ushuaia Bay (Tierra del Fuego)-Potential effect on dissolved oxygen depletion
title Particle dynamics in Ushuaia Bay (Tierra del Fuego)-Potential effect on dissolved oxygen depletion
spellingShingle Particle dynamics in Ushuaia Bay (Tierra del Fuego)-Potential effect on dissolved oxygen depletion
Flores Melo, Elizabeth Ximena
BEAGLE CHANNEL
HYDROLOGY
HYPOXIA
SUSPENDED PARTICULATE MATTER
USHUAIA BAY
title_short Particle dynamics in Ushuaia Bay (Tierra del Fuego)-Potential effect on dissolved oxygen depletion
title_full Particle dynamics in Ushuaia Bay (Tierra del Fuego)-Potential effect on dissolved oxygen depletion
title_fullStr Particle dynamics in Ushuaia Bay (Tierra del Fuego)-Potential effect on dissolved oxygen depletion
title_full_unstemmed Particle dynamics in Ushuaia Bay (Tierra del Fuego)-Potential effect on dissolved oxygen depletion
title_sort Particle dynamics in Ushuaia Bay (Tierra del Fuego)-Potential effect on dissolved oxygen depletion
dc.creator.none.fl_str_mv Flores Melo, Elizabeth Ximena
Martín de Nascimento, Jacobo
Kerdel, Lounes
François, Bourrin
Colloca, Cristina Beatriz
Menniti, Chirstophe
Durrieu de Madron, Xavier
author Flores Melo, Elizabeth Ximena
author_facet Flores Melo, Elizabeth Ximena
Martín de Nascimento, Jacobo
Kerdel, Lounes
François, Bourrin
Colloca, Cristina Beatriz
Menniti, Chirstophe
Durrieu de Madron, Xavier
author_role author
author2 Martín de Nascimento, Jacobo
Kerdel, Lounes
François, Bourrin
Colloca, Cristina Beatriz
Menniti, Chirstophe
Durrieu de Madron, Xavier
author2_role author
author
author
author
author
author
dc.subject.none.fl_str_mv BEAGLE CHANNEL
HYDROLOGY
HYPOXIA
SUSPENDED PARTICULATE MATTER
USHUAIA BAY
topic BEAGLE CHANNEL
HYDROLOGY
HYPOXIA
SUSPENDED PARTICULATE MATTER
USHUAIA BAY
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv This study examines the distribution and seasonal evolution of hydrographic, hydrodynamic, and nepheloid layers in Ushuaia Bay and the submerged glacial valley that connects it to the Beagle Channel. The hydrographic structure is highly seasonal, with a total mixing of the water column in winter and the appearance of a pycnocline between 50 and 70 m deep from spring to late autumn, mainly due to desalination. A counter-clockwise current sweeps the entire bay regardless of the season or phase of the tide. This current is at its maximum in the surface layer, allowing the rapid renewal of the bay's waters, while deep currents are weak and imply a slow renewal of the valley's waters. Turbid and oxygen-depleted structures are observed in summer in the valley. The combination of seasonal stratification, high organic matter inputs from planktonic production, oxygen consumption for remineralization, and sluggish circulation results in a decrease in near-bottom oxygen concentration in the glacial valley at the end of the stratified season, before mixing and re-oxygenation of the water column during the southern winter. The possible impact of dissolved oxygen depletion in the bottom waters of the valley on benthic organisms, like crustaceans, is discussed.
Fil: Flores Melo, Elizabeth Ximena. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; Argentina
Fil: Martín de Nascimento, Jacobo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; Argentina
Fil: Kerdel, Lounes. Centre National de la Recherche Scientifique; Francia
Fil: François, Bourrin. Centre National de la Recherche Scientifique; Francia
Fil: Colloca, Cristina Beatriz. Universidad Nacional de Tierra del Fuego. Instituto de Ciencias Polares, Recursos Naturales y Ambiente; Argentina
Fil: Menniti, Chirstophe. Centre National de la Recherche Scientifique; Francia
Fil: Durrieu de Madron, Xavier. Centre National de la Recherche Scientifique; Francia
description This study examines the distribution and seasonal evolution of hydrographic, hydrodynamic, and nepheloid layers in Ushuaia Bay and the submerged glacial valley that connects it to the Beagle Channel. The hydrographic structure is highly seasonal, with a total mixing of the water column in winter and the appearance of a pycnocline between 50 and 70 m deep from spring to late autumn, mainly due to desalination. A counter-clockwise current sweeps the entire bay regardless of the season or phase of the tide. This current is at its maximum in the surface layer, allowing the rapid renewal of the bay's waters, while deep currents are weak and imply a slow renewal of the valley's waters. Turbid and oxygen-depleted structures are observed in summer in the valley. The combination of seasonal stratification, high organic matter inputs from planktonic production, oxygen consumption for remineralization, and sluggish circulation results in a decrease in near-bottom oxygen concentration in the glacial valley at the end of the stratified season, before mixing and re-oxygenation of the water column during the southern winter. The possible impact of dissolved oxygen depletion in the bottom waters of the valley on benthic organisms, like crustaceans, is discussed.
publishDate 2020
dc.date.none.fl_str_mv 2020-02
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/11336/141557
Flores Melo, Elizabeth Ximena; Martín de Nascimento, Jacobo; Kerdel, Lounes; François, Bourrin; Colloca, Cristina Beatriz; et al.; Particle dynamics in Ushuaia Bay (Tierra del Fuego)-Potential effect on dissolved oxygen depletion; Molecular Diversity Preservation International; Water; 12; 2; 2-2020; 324
2073-4441
CONICET Digital
CONICET
url http://hdl.handle.net/11336/141557
identifier_str_mv Flores Melo, Elizabeth Ximena; Martín de Nascimento, Jacobo; Kerdel, Lounes; François, Bourrin; Colloca, Cristina Beatriz; et al.; Particle dynamics in Ushuaia Bay (Tierra del Fuego)-Potential effect on dissolved oxygen depletion; Molecular Diversity Preservation International; Water; 12; 2; 2-2020; 324
2073-4441
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://www.mdpi.com/2073-4441/12/2/324
info:eu-repo/semantics/altIdentifier/doi/10.3390/w12020324
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 Molecular Diversity Preservation International
publisher.none.fl_str_mv Molecular Diversity Preservation International
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
_version_ 1842269610217308160
score 12.885934

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