Direct Measurements of the Malvinas Current Velocity Structure

Autores
Frey, D. I.; Piola, Alberto Ricardo; Krechik, V. A.; Fofanov, D. V.; Morozov, E. G.; Silvestrova, K. P.; Tarakanov, R.Yu.; Gladyshev, S. V.
Año de publicación
2021
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Direct velocity measurements of the Malvinas Current (MC) were carried out on multiple occupations of five transects across the flow using a Shipborne Acoustic Current Profiler (SADCP) on the R/V Akademik Sergey Vavilov and Akademik Mstislav Keldysh. These data are used to determine local features of the three-dimensional velocity field of the current. The occupations covered the northern branch of the Antarctic Circumpolar Current (ACC) and the southern part of the MC. Five transects across the flow were located at 350–550 km from each other from the Drake Passage to the western Argentine Basin at 46°S. The new observations reveal that the current is organized in two branches, namely, an inshore branch extending to a depth of 200–300 m and a main offshore branch, which flows approximately over the 1,400 m isobath. This two-branch structure is observed on each of the cross-flow transects. The observed velocities of the inshore branch exceed 40 cm/s on each studied crossing of the current. The MC is a cold western boundary current that follows the Subantarctic Front. This flow originates as an offshoot of the northern branch of the ACC and continues over the Falkland/Malvinas Plateau and along the western slope of the Argentine Basin. Volume transports of the upper 700 m of the MC calculated for each crossing range between 1.4 and 4.4 Sv for the inshore branch and between 21.2 and 25.5 Sv for the offshore (main) branch.
Fil: Frey, D. I.. Russian Academy of Sciences; Rusia
Fil: Piola, Alberto Ricardo. Ministerio de Defensa. Armada Argentina. Servicio de Hidrografía Naval; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Krechik, V. A.. Russian Academy of Sciences; Rusia
Fil: Fofanov, D. V.. Russian Academy of Sciences; Rusia
Fil: Morozov, E. G.. Russian Academy of Sciences; Rusia
Fil: Silvestrova, K. P.. Russian Academy of Sciences; Rusia
Fil: Tarakanov, R.Yu.. Russian Academy of Sciences; Rusia
Fil: Gladyshev, S. V.. Russian Academy of Sciences; Rusia
Materia
CURRENTS
MALVINAS CURRENT
OCEAN CIRCULATION
SADCP MEASUREMENTS
VELOCITY STRUCTURE
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:11336/165092
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/165092
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Direct Measurements of the Malvinas Current Velocity StructureFrey, D. I.Piola, Alberto RicardoKrechik, V. A.Fofanov, D. V.Morozov, E. G.Silvestrova, K. P.Tarakanov, R.Yu.Gladyshev, S. V.CURRENTSMALVINAS CURRENTOCEAN CIRCULATIONSADCP MEASUREMENTSVELOCITY STRUCTUREhttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1Direct velocity measurements of the Malvinas Current (MC) were carried out on multiple occupations of five transects across the flow using a Shipborne Acoustic Current Profiler (SADCP) on the R/V Akademik Sergey Vavilov and Akademik Mstislav Keldysh. These data are used to determine local features of the three-dimensional velocity field of the current. The occupations covered the northern branch of the Antarctic Circumpolar Current (ACC) and the southern part of the MC. Five transects across the flow were located at 350–550 km from each other from the Drake Passage to the western Argentine Basin at 46°S. The new observations reveal that the current is organized in two branches, namely, an inshore branch extending to a depth of 200–300 m and a main offshore branch, which flows approximately over the 1,400 m isobath. This two-branch structure is observed on each of the cross-flow transects. The observed velocities of the inshore branch exceed 40 cm/s on each studied crossing of the current. The MC is a cold western boundary current that follows the Subantarctic Front. This flow originates as an offshoot of the northern branch of the ACC and continues over the Falkland/Malvinas Plateau and along the western slope of the Argentine Basin. Volume transports of the upper 700 m of the MC calculated for each crossing range between 1.4 and 4.4 Sv for the inshore branch and between 21.2 and 25.5 Sv for the offshore (main) branch.Fil: Frey, D. I.. Russian Academy of Sciences; RusiaFil: Piola, Alberto Ricardo. Ministerio de Defensa. Armada Argentina. Servicio de Hidrografía Naval; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Krechik, V. A.. Russian Academy of Sciences; RusiaFil: Fofanov, D. V.. Russian Academy of Sciences; RusiaFil: Morozov, E. G.. Russian Academy of Sciences; RusiaFil: Silvestrova, K. P.. Russian Academy of Sciences; RusiaFil: Tarakanov, R.Yu.. Russian Academy of Sciences; RusiaFil: Gladyshev, S. V.. Russian Academy of Sciences; RusiaBlackwell Publishing2021-03info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/165092Frey, D. I.; Piola, Alberto Ricardo; Krechik, V. A.; Fofanov, D. V.; Morozov, E. G.; et al.; Direct Measurements of the Malvinas Current Velocity Structure; Blackwell Publishing; Journal of Geophysical Research: Oceans; 126; 4; 3-2021; 1-362169-92752169-9291CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://onlinelibrary.wiley.com/doi/10.1029/2020JC016727info:eu-repo/semantics/altIdentifier/doi/10.1029/2020JC016727info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-15T14:27:42Zoai:ri.conicet.gov.ar:11336/165092instacron: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:34982025-10-15 14:27:43.072CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Direct Measurements of the Malvinas Current Velocity Structure
title Direct Measurements of the Malvinas Current Velocity Structure
spellingShingle Direct Measurements of the Malvinas Current Velocity Structure
Frey, D. I.
CURRENTS
MALVINAS CURRENT
OCEAN CIRCULATION
SADCP MEASUREMENTS
VELOCITY STRUCTURE
title_short Direct Measurements of the Malvinas Current Velocity Structure
title_full Direct Measurements of the Malvinas Current Velocity Structure
title_fullStr Direct Measurements of the Malvinas Current Velocity Structure
title_full_unstemmed Direct Measurements of the Malvinas Current Velocity Structure
title_sort Direct Measurements of the Malvinas Current Velocity Structure
dc.creator.none.fl_str_mv Frey, D. I.
Piola, Alberto Ricardo
Krechik, V. A.
Fofanov, D. V.
Morozov, E. G.
Silvestrova, K. P.
Tarakanov, R.Yu.
Gladyshev, S. V.
author Frey, D. I.
author_facet Frey, D. I.
Piola, Alberto Ricardo
Krechik, V. A.
Fofanov, D. V.
Morozov, E. G.
Silvestrova, K. P.
Tarakanov, R.Yu.
Gladyshev, S. V.
author_role author
author2 Piola, Alberto Ricardo
Krechik, V. A.
Fofanov, D. V.
Morozov, E. G.
Silvestrova, K. P.
Tarakanov, R.Yu.
Gladyshev, S. V.
author2_role author
author
author
author
author
author
author
dc.subject.none.fl_str_mv CURRENTS
MALVINAS CURRENT
OCEAN CIRCULATION
SADCP MEASUREMENTS
VELOCITY STRUCTURE
topic CURRENTS
MALVINAS CURRENT
OCEAN CIRCULATION
SADCP MEASUREMENTS
VELOCITY STRUCTURE
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Direct velocity measurements of the Malvinas Current (MC) were carried out on multiple occupations of five transects across the flow using a Shipborne Acoustic Current Profiler (SADCP) on the R/V Akademik Sergey Vavilov and Akademik Mstislav Keldysh. These data are used to determine local features of the three-dimensional velocity field of the current. The occupations covered the northern branch of the Antarctic Circumpolar Current (ACC) and the southern part of the MC. Five transects across the flow were located at 350–550 km from each other from the Drake Passage to the western Argentine Basin at 46°S. The new observations reveal that the current is organized in two branches, namely, an inshore branch extending to a depth of 200–300 m and a main offshore branch, which flows approximately over the 1,400 m isobath. This two-branch structure is observed on each of the cross-flow transects. The observed velocities of the inshore branch exceed 40 cm/s on each studied crossing of the current. The MC is a cold western boundary current that follows the Subantarctic Front. This flow originates as an offshoot of the northern branch of the ACC and continues over the Falkland/Malvinas Plateau and along the western slope of the Argentine Basin. Volume transports of the upper 700 m of the MC calculated for each crossing range between 1.4 and 4.4 Sv for the inshore branch and between 21.2 and 25.5 Sv for the offshore (main) branch.
Fil: Frey, D. I.. Russian Academy of Sciences; Rusia
Fil: Piola, Alberto Ricardo. Ministerio de Defensa. Armada Argentina. Servicio de Hidrografía Naval; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Krechik, V. A.. Russian Academy of Sciences; Rusia
Fil: Fofanov, D. V.. Russian Academy of Sciences; Rusia
Fil: Morozov, E. G.. Russian Academy of Sciences; Rusia
Fil: Silvestrova, K. P.. Russian Academy of Sciences; Rusia
Fil: Tarakanov, R.Yu.. Russian Academy of Sciences; Rusia
Fil: Gladyshev, S. V.. Russian Academy of Sciences; Rusia
description Direct velocity measurements of the Malvinas Current (MC) were carried out on multiple occupations of five transects across the flow using a Shipborne Acoustic Current Profiler (SADCP) on the R/V Akademik Sergey Vavilov and Akademik Mstislav Keldysh. These data are used to determine local features of the three-dimensional velocity field of the current. The occupations covered the northern branch of the Antarctic Circumpolar Current (ACC) and the southern part of the MC. Five transects across the flow were located at 350–550 km from each other from the Drake Passage to the western Argentine Basin at 46°S. The new observations reveal that the current is organized in two branches, namely, an inshore branch extending to a depth of 200–300 m and a main offshore branch, which flows approximately over the 1,400 m isobath. This two-branch structure is observed on each of the cross-flow transects. The observed velocities of the inshore branch exceed 40 cm/s on each studied crossing of the current. The MC is a cold western boundary current that follows the Subantarctic Front. This flow originates as an offshoot of the northern branch of the ACC and continues over the Falkland/Malvinas Plateau and along the western slope of the Argentine Basin. Volume transports of the upper 700 m of the MC calculated for each crossing range between 1.4 and 4.4 Sv for the inshore branch and between 21.2 and 25.5 Sv for the offshore (main) branch.
publishDate 2021
dc.date.none.fl_str_mv 2021-03
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/11336/165092
Frey, D. I.; Piola, Alberto Ricardo; Krechik, V. A.; Fofanov, D. V.; Morozov, E. G.; et al.; Direct Measurements of the Malvinas Current Velocity Structure; Blackwell Publishing; Journal of Geophysical Research: Oceans; 126; 4; 3-2021; 1-36
2169-9275
2169-9291
CONICET Digital
CONICET
url http://hdl.handle.net/11336/165092
identifier_str_mv Frey, D. I.; Piola, Alberto Ricardo; Krechik, V. A.; Fofanov, D. V.; Morozov, E. G.; et al.; Direct Measurements of the Malvinas Current Velocity Structure; Blackwell Publishing; Journal of Geophysical Research: Oceans; 126; 4; 3-2021; 1-36
2169-9275
2169-9291
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://onlinelibrary.wiley.com/doi/10.1029/2020JC016727
info:eu-repo/semantics/altIdentifier/doi/10.1029/2020JC016727
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 Blackwell Publishing
publisher.none.fl_str_mv Blackwell Publishing
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_ 1846082734809677824
score 13.22299

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