The mediterranean overflow in the Gulf of Cadiz: a rugged journey
Autor(a) principal: | |
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Data de Publicação: | 2017 |
Outros Autores: | , , , , , , , , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/10400.1/11763 |
Resumo: | The pathways and transformations of dense water overflows, which depend on small-scale interactions between flow dynamics and erosional-depositional processes, are a central piece in the ocean's large-scale circulation. A novel, high-resolution current and hydrographic data set highlights the intricate pathway travelled by the saline Mediterranean Overflow as it enters the Atlantic. Interaction with the topography constraints its spreading. Over the initial 200 km west of the Gibraltar gateway, distinct channels separate the initial gravity current into several plunging branches depth-sorted by density. Shallow branches follow the upper slope and eventually detach as buoyant plumes. Deeper branches occupy mid slope channels and coalesce upon reaching a diapiric ridge. A still deeper branch, guided by a lower channel wall marked by transverse furrows, experiences small-scale overflows which travel downslope to settle at mid-depths. The Mediterranean salt flux into the Atlantic has implications for the buoyancy balance in the North Atlantic. Observations on how this flux enters at different depth levels are key to accurately measuring and understanding the role of Mediterranean Outflow in future climate scenarios. |
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The mediterranean overflow in the Gulf of Cadiz: a rugged journeyNorth-AtlanticOutflowGibraltarStraitOceanWaterChannelVariabilityVelocityCurrentsThe pathways and transformations of dense water overflows, which depend on small-scale interactions between flow dynamics and erosional-depositional processes, are a central piece in the ocean's large-scale circulation. A novel, high-resolution current and hydrographic data set highlights the intricate pathway travelled by the saline Mediterranean Overflow as it enters the Atlantic. Interaction with the topography constraints its spreading. Over the initial 200 km west of the Gibraltar gateway, distinct channels separate the initial gravity current into several plunging branches depth-sorted by density. Shallow branches follow the upper slope and eventually detach as buoyant plumes. Deeper branches occupy mid slope channels and coalesce upon reaching a diapiric ridge. A still deeper branch, guided by a lower channel wall marked by transverse furrows, experiences small-scale overflows which travel downslope to settle at mid-depths. The Mediterranean salt flux into the Atlantic has implications for the buoyancy balance in the North Atlantic. Observations on how this flux enters at different depth levels are key to accurately measuring and understanding the role of Mediterranean Outflow in future climate scenarios.project INGRES3 [CTM2010-21229]; project STOCA (IEO); project PESCADIZ (IEO); project INDEMARES [LIFE07 NAT/E/000732+]; project MOC2 [CTM2008-06438-C02-01]; project MED-OUTFLOW [CTM2008-03422-E/MAR, CTM2010-11488-E]; project PELCOSAT (IEO); project SEMANE; project DILEMA [CTM2014-59244-C3-2-R]; project INPULSE [CTM2016-75129-C3-1-R]; SISMER data center; PANGEA data center; IEO data center; ICES data center; BODC data center; NOAA data center; CONTOURIBER project [CTM2008-06399-C04-01/MAR]American Association for the Advancement of ScienceSapientiaSanchez-Leal, Ricardo F.Jesus Bellanco, MariaMiguel Fernandez-Salas, LuisGarcia-Lafuente, JesusGasser-Rubinat, MarcGonzalez-Pola, CesarHernandez-Molina, Francisco J.Pelegri, Josep L.Peliz, AlvaroRelvas, PauloRoque, DavidRuiz-Villarreal, ManuelSammartino, SimoneCarlos Sanchez-Garrido, Jose2018-12-07T14:57:55Z2017-112017-11-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10400.1/11763eng2375-254810.1126/sciadv.aao0609info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2023-07-24T10:23:37Zoai:sapientia.ualg.pt:10400.1/11763Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T20:03:13.399367Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse |
dc.title.none.fl_str_mv |
The mediterranean overflow in the Gulf of Cadiz: a rugged journey |
title |
The mediterranean overflow in the Gulf of Cadiz: a rugged journey |
spellingShingle |
The mediterranean overflow in the Gulf of Cadiz: a rugged journey Sanchez-Leal, Ricardo F. North-Atlantic Outflow Gibraltar Strait Ocean Water Channel Variability Velocity Currents |
title_short |
The mediterranean overflow in the Gulf of Cadiz: a rugged journey |
title_full |
The mediterranean overflow in the Gulf of Cadiz: a rugged journey |
title_fullStr |
The mediterranean overflow in the Gulf of Cadiz: a rugged journey |
title_full_unstemmed |
The mediterranean overflow in the Gulf of Cadiz: a rugged journey |
title_sort |
The mediterranean overflow in the Gulf of Cadiz: a rugged journey |
author |
Sanchez-Leal, Ricardo F. |
author_facet |
Sanchez-Leal, Ricardo F. Jesus Bellanco, Maria Miguel Fernandez-Salas, Luis Garcia-Lafuente, Jesus Gasser-Rubinat, Marc Gonzalez-Pola, Cesar Hernandez-Molina, Francisco J. Pelegri, Josep L. Peliz, Alvaro Relvas, Paulo Roque, David Ruiz-Villarreal, Manuel Sammartino, Simone Carlos Sanchez-Garrido, Jose |
author_role |
author |
author2 |
Jesus Bellanco, Maria Miguel Fernandez-Salas, Luis Garcia-Lafuente, Jesus Gasser-Rubinat, Marc Gonzalez-Pola, Cesar Hernandez-Molina, Francisco J. Pelegri, Josep L. Peliz, Alvaro Relvas, Paulo Roque, David Ruiz-Villarreal, Manuel Sammartino, Simone Carlos Sanchez-Garrido, Jose |
author2_role |
author author author author author author author author author author author author author |
dc.contributor.none.fl_str_mv |
Sapientia |
dc.contributor.author.fl_str_mv |
Sanchez-Leal, Ricardo F. Jesus Bellanco, Maria Miguel Fernandez-Salas, Luis Garcia-Lafuente, Jesus Gasser-Rubinat, Marc Gonzalez-Pola, Cesar Hernandez-Molina, Francisco J. Pelegri, Josep L. Peliz, Alvaro Relvas, Paulo Roque, David Ruiz-Villarreal, Manuel Sammartino, Simone Carlos Sanchez-Garrido, Jose |
dc.subject.por.fl_str_mv |
North-Atlantic Outflow Gibraltar Strait Ocean Water Channel Variability Velocity Currents |
topic |
North-Atlantic Outflow Gibraltar Strait Ocean Water Channel Variability Velocity Currents |
description |
The pathways and transformations of dense water overflows, which depend on small-scale interactions between flow dynamics and erosional-depositional processes, are a central piece in the ocean's large-scale circulation. A novel, high-resolution current and hydrographic data set highlights the intricate pathway travelled by the saline Mediterranean Overflow as it enters the Atlantic. Interaction with the topography constraints its spreading. Over the initial 200 km west of the Gibraltar gateway, distinct channels separate the initial gravity current into several plunging branches depth-sorted by density. Shallow branches follow the upper slope and eventually detach as buoyant plumes. Deeper branches occupy mid slope channels and coalesce upon reaching a diapiric ridge. A still deeper branch, guided by a lower channel wall marked by transverse furrows, experiences small-scale overflows which travel downslope to settle at mid-depths. The Mediterranean salt flux into the Atlantic has implications for the buoyancy balance in the North Atlantic. Observations on how this flux enters at different depth levels are key to accurately measuring and understanding the role of Mediterranean Outflow in future climate scenarios. |
publishDate |
2017 |
dc.date.none.fl_str_mv |
2017-11 2017-11-01T00:00:00Z 2018-12-07T14:57:55Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/10400.1/11763 |
url |
http://hdl.handle.net/10400.1/11763 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
2375-2548 10.1126/sciadv.aao0609 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
American Association for the Advancement of Science |
publisher.none.fl_str_mv |
American Association for the Advancement of Science |
dc.source.none.fl_str_mv |
reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação instacron:RCAAP |
instname_str |
Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
instacron_str |
RCAAP |
institution |
RCAAP |
reponame_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
collection |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository.name.fl_str_mv |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
repository.mail.fl_str_mv |
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1799133266244009984 |