The mediterranean overflow in the Gulf of Cadiz: a rugged journey
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 i...
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American Association for the Advancement of Science
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Online Access: | http://hdl.handle.net/10400.1/11763 https://doi.org/10.1126/sciadv.aao0609 |
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ftunivalgarve:oai:sapientia.ualg.pt:10400.1/11763 2023-05-15T17:31:41+02:00 The mediterranean overflow in the Gulf of Cadiz: a rugged journey 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 2017-11 http://hdl.handle.net/10400.1/11763 https://doi.org/10.1126/sciadv.aao0609 eng eng American Association for the Advancement of Science 2375-2548 http://hdl.handle.net/10400.1/11763 doi:10.1126/sciadv.aao0609 openAccess http://creativecommons.org/licenses/by/4.0/ CC-BY North-Atlantic Outflow Gibraltar Strait Ocean Water Channel Variability Velocity Currents article 2017 ftunivalgarve https://doi.org/10.1126/sciadv.aao0609 2022-05-30T08:48:23Z 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. 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] info:eu-repo/semantics/publishedVersion Article in Journal/Newspaper North Atlantic Universidade do Algarve: Sapienta Science Advances 3 11 eaao0609 |
institution |
Open Polar |
collection |
Universidade do Algarve: Sapienta |
op_collection_id |
ftunivalgarve |
language |
English |
topic |
North-Atlantic Outflow Gibraltar Strait Ocean Water Channel Variability Velocity Currents |
spellingShingle |
North-Atlantic Outflow Gibraltar Strait Ocean Water Channel Variability Velocity Currents 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 The mediterranean overflow in the Gulf of Cadiz: a rugged journey |
topic_facet |
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. 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] info:eu-repo/semantics/publishedVersion |
format |
Article in Journal/Newspaper |
author |
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_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_sort |
Sanchez-Leal, Ricardo F. |
title |
The mediterranean overflow in the Gulf of Cadiz: a rugged journey |
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 |
mediterranean overflow in the gulf of cadiz: a rugged journey |
publisher |
American Association for the Advancement of Science |
publishDate |
2017 |
url |
http://hdl.handle.net/10400.1/11763 https://doi.org/10.1126/sciadv.aao0609 |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_relation |
2375-2548 http://hdl.handle.net/10400.1/11763 doi:10.1126/sciadv.aao0609 |
op_rights |
openAccess http://creativecommons.org/licenses/by/4.0/ |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1126/sciadv.aao0609 |
container_title |
Science Advances |
container_volume |
3 |
container_issue |
11 |
container_start_page |
eaao0609 |
_version_ |
1766129382555910144 |