Ocean Circulation over North Atlantic underwater features in the path of the Mediterranean Outflow Water: Ormonde and Formigas seamounts, and the Gazul mud volcano
Seamounts constitute an obstacle to the ocean circulation, modifying it. As a result, a variety of hydrodynamical processes and phenomena may take place over seamounts, among others, flow intensification, current deflection, upwelling, Taylor caps, and internal waves. These oceanographic effects may...
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Online Access: | http://hdl.handle.net/10508/12158 http://hdl.handle.net/10261/318623 https://doi.org/10.3389/fmars.2019.00702 |
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ftcsic:oai:digital.csic.es:10261/318623 2024-02-11T10:06:35+01:00 Ocean Circulation over North Atlantic underwater features in the path of the Mediterranean Outflow Water: Ormonde and Formigas seamounts, and the Gazul mud volcano Mosquera-Giménez, Ángela Vélez-Belchí, Pedro Rivera, Jesús Piñeiro, Safo Fajar, Noelia Caínzos, Verónica Santiago, Rocío Balbín, Rosa Jiménez-Aparicio, Juan Antonio Domínguez-Carrió, Carlos Blasco-Ferre, Jordi Carreiro-Silva, Marina Morato, Telmo Puerta, Patricia Orejas, Covadonga Océan atlantique Atlantic Ocean Océano Atlántico 2019-12 http://hdl.handle.net/10508/12158 http://hdl.handle.net/10261/318623 https://doi.org/10.3389/fmars.2019.00702 en eng Centro Oceanográfico de Canarias Postprint Frontiers in Marine Science, 6/702. 2019: 1-18 http://hdl.handle.net/10508/12158 http://hdl.handle.net/10261/318623 doi:10.3389/fmars.2019.00702 23099 open Medio Marino seamounts Centro Oceanográfico de Canarias Mediterranean Outflow Water Taylor columns/caps internal waves cold-water corals deep water research artículo http://purl.org/coar/resource_type/c_6501 2019 ftcsic https://doi.org/10.3389/fmars.2019.00702 2024-01-16T11:45:09Z Seamounts constitute an obstacle to the ocean circulation, modifying it. As a result, a variety of hydrodynamical processes and phenomena may take place over seamounts, among others, flow intensification, current deflection, upwelling, Taylor caps, and internal waves. These oceanographic effects may turn seamounts into very productive ecosystems with high species diversity, and in some cases, are densely populated by benthic organisms, such corals, gorgonians, and sponges. In this study, we describe the oceanographic conditions over seamounts and other underwater features in the path of the Mediterranean Outflow Water (MOW), where populations of benthic suspensions feeders have been observed. Using CTD, LADPC and biochemical measurements carried out in the Ormonde and Formigas seamounts and the Gazul mud volcano (Northeast Atlantic), we show that Taylor caps were not observed in any of the sampled features. However, we point out that the relatively high values of the Brunt–Väisälä frequency in the MOW halocline, in conjunction with the slope of the seamount flanks, set up conditions for the breakout of internal waves and amplification of the currents. This may enhance the vertical mixing, resuspending the organic material deposited on the seafloor and, therefore, increasing the food availability for the communities dominated by benthic suspension feeders. Thus, we hypothesize that internal waves could be improving the conditions for benthic suspension feeders to grow on the slope of seamounts. SI Article in Journal/Newspaper North Atlantic Northeast Atlantic Digital.CSIC (Spanish National Research Council) Frontiers in Marine Science 6 |
institution |
Open Polar |
collection |
Digital.CSIC (Spanish National Research Council) |
op_collection_id |
ftcsic |
language |
English |
topic |
Medio Marino seamounts Centro Oceanográfico de Canarias Mediterranean Outflow Water Taylor columns/caps internal waves cold-water corals deep water research |
spellingShingle |
Medio Marino seamounts Centro Oceanográfico de Canarias Mediterranean Outflow Water Taylor columns/caps internal waves cold-water corals deep water research Mosquera-Giménez, Ángela Vélez-Belchí, Pedro Rivera, Jesús Piñeiro, Safo Fajar, Noelia Caínzos, Verónica Santiago, Rocío Balbín, Rosa Jiménez-Aparicio, Juan Antonio Domínguez-Carrió, Carlos Blasco-Ferre, Jordi Carreiro-Silva, Marina Morato, Telmo Puerta, Patricia Orejas, Covadonga Ocean Circulation over North Atlantic underwater features in the path of the Mediterranean Outflow Water: Ormonde and Formigas seamounts, and the Gazul mud volcano |
topic_facet |
Medio Marino seamounts Centro Oceanográfico de Canarias Mediterranean Outflow Water Taylor columns/caps internal waves cold-water corals deep water research |
description |
Seamounts constitute an obstacle to the ocean circulation, modifying it. As a result, a variety of hydrodynamical processes and phenomena may take place over seamounts, among others, flow intensification, current deflection, upwelling, Taylor caps, and internal waves. These oceanographic effects may turn seamounts into very productive ecosystems with high species diversity, and in some cases, are densely populated by benthic organisms, such corals, gorgonians, and sponges. In this study, we describe the oceanographic conditions over seamounts and other underwater features in the path of the Mediterranean Outflow Water (MOW), where populations of benthic suspensions feeders have been observed. Using CTD, LADPC and biochemical measurements carried out in the Ormonde and Formigas seamounts and the Gazul mud volcano (Northeast Atlantic), we show that Taylor caps were not observed in any of the sampled features. However, we point out that the relatively high values of the Brunt–Väisälä frequency in the MOW halocline, in conjunction with the slope of the seamount flanks, set up conditions for the breakout of internal waves and amplification of the currents. This may enhance the vertical mixing, resuspending the organic material deposited on the seafloor and, therefore, increasing the food availability for the communities dominated by benthic suspension feeders. Thus, we hypothesize that internal waves could be improving the conditions for benthic suspension feeders to grow on the slope of seamounts. SI |
format |
Article in Journal/Newspaper |
author |
Mosquera-Giménez, Ángela Vélez-Belchí, Pedro Rivera, Jesús Piñeiro, Safo Fajar, Noelia Caínzos, Verónica Santiago, Rocío Balbín, Rosa Jiménez-Aparicio, Juan Antonio Domínguez-Carrió, Carlos Blasco-Ferre, Jordi Carreiro-Silva, Marina Morato, Telmo Puerta, Patricia Orejas, Covadonga |
author_facet |
Mosquera-Giménez, Ángela Vélez-Belchí, Pedro Rivera, Jesús Piñeiro, Safo Fajar, Noelia Caínzos, Verónica Santiago, Rocío Balbín, Rosa Jiménez-Aparicio, Juan Antonio Domínguez-Carrió, Carlos Blasco-Ferre, Jordi Carreiro-Silva, Marina Morato, Telmo Puerta, Patricia Orejas, Covadonga |
author_sort |
Mosquera-Giménez, Ángela |
title |
Ocean Circulation over North Atlantic underwater features in the path of the Mediterranean Outflow Water: Ormonde and Formigas seamounts, and the Gazul mud volcano |
title_short |
Ocean Circulation over North Atlantic underwater features in the path of the Mediterranean Outflow Water: Ormonde and Formigas seamounts, and the Gazul mud volcano |
title_full |
Ocean Circulation over North Atlantic underwater features in the path of the Mediterranean Outflow Water: Ormonde and Formigas seamounts, and the Gazul mud volcano |
title_fullStr |
Ocean Circulation over North Atlantic underwater features in the path of the Mediterranean Outflow Water: Ormonde and Formigas seamounts, and the Gazul mud volcano |
title_full_unstemmed |
Ocean Circulation over North Atlantic underwater features in the path of the Mediterranean Outflow Water: Ormonde and Formigas seamounts, and the Gazul mud volcano |
title_sort |
ocean circulation over north atlantic underwater features in the path of the mediterranean outflow water: ormonde and formigas seamounts, and the gazul mud volcano |
publishDate |
2019 |
url |
http://hdl.handle.net/10508/12158 http://hdl.handle.net/10261/318623 https://doi.org/10.3389/fmars.2019.00702 |
op_coverage |
Océan atlantique Atlantic Ocean Océano Atlántico |
genre |
North Atlantic Northeast Atlantic |
genre_facet |
North Atlantic Northeast Atlantic |
op_relation |
Centro Oceanográfico de Canarias Postprint Frontiers in Marine Science, 6/702. 2019: 1-18 http://hdl.handle.net/10508/12158 http://hdl.handle.net/10261/318623 doi:10.3389/fmars.2019.00702 23099 |
op_rights |
open |
op_doi |
https://doi.org/10.3389/fmars.2019.00702 |
container_title |
Frontiers in Marine Science |
container_volume |
6 |
_version_ |
1790604394611343360 |