Dataset on the RETRO-BMC cruise onboard the R/V Hespérides, April 2017, Brazil-Malvinas Confluence

Orúe‐Echevarría, Dorleta; Pelegrí, Josep Lluís; Castellanos, Paola; Guallar, Carles; Marotta, Humberto; Marrasé, Cèlia; Martín, Jacobo; Masdeu-Navarro, Marta; Paniagua, Guillermina Fernanda; Peña-Izquierdo, Jesús; Puigdefàbregas, Joan; Rodríguez‐Fonseca, Belén; Roget, Elena; Fieschi, Miquel Rosell; Salat, Jordi; Salvador, Joaquín; Vallès‐Casanova, Ignasi; Vidal, Montserrat; Viúdez, Álvaro

doi:10.1016/j.dib.2020.105412

Cited by 3 publications

(2 citation statements)

References 8 publications

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“…On the contrary, direct measurements of their structure remain rare. Two cruises of R/V Hesperides performed in March 2015 (Orúe‐Echevarría, Pelegrí, Alonso‐González, et al., 2019) and April 2017 (Orúe‐Echevarría et al., 2020) were dedicated to measurements of temperature, salinity, and velocities at the strong front near the collision of the Brazil and MCs. Orúe‐Echevarría, Pelegrí, Machín, et al.…”

Section: Introductionmentioning

confidence: 99%

“…On the contrary, direct measurements of their structure remain rare. Two cruises of R/V Hesperides performed in March 2015 (Orúe-Echevarría, Pelegrí, Alonso-González, et al, 2019) and April 2017 (Orúe-Echevarría et al, 2020) were dedicated to measurements of temperature, salinity, and velocities at the strong front near the collision of the Brazil and MCs. Orúe-Echevarría, Pelegrí, Machín, et al (2019) show that circulation within the BMC strongly depends on the MC, BC, and Zapiola Gyre conditions and provides in situ information about dynamic properties of the BMC frontal system.…”

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confidence: 99%

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Dynamic Structure of Eddies of the Brazil‐Malvinas Confluence Zone Revealed by Direct Measurements and Satellite Altimetry

Frey,

Kubryakov

2023

JGR Oceans

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The goal of this work is to study the dynamical structure of eddies of the Brazil‐Malvinas Confluence zone (BMC eddies) using direct velocity measurements carried out by Shipborne Acoustic Doppler Current Profiler during five oceanographic cruises performed in 2016–2022. In total, in situ data of 13 BMC eddies, including nine anticyclones and four cyclones are available. These data show that the orbital velocity in such eddies can reach 189 cm/s and their vertical structure is highly barotropic. In several eddies, the velocities exceeding 100 cm/s are observed down to a depth of 560 m and at a depth of 800 m they are still higher than 80 cm/s. The spatial structure of velocity and horizontal shear in the eddies is strongly asymmetric, with higher velocities in the southern part near the intense thermohaline BMC front. Altimetry data show qualitative agreement with in situ data, but underestimate the horizontal velocity shear and the maximum velocities at the periphery of the BMC eddies. We also use satellite altimetry and Argo float measurements to study these eddies, and estimate their impact on the thermohaline structure. The analysis shows that the eddies with orbital velocities exceeding 100 cm/s cause intense temperature and salinity anomalies reaching 7–9°C and 1 psu in anticyclones and −4°C and 0.8 psu in cyclones at 100–300 m depth.

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Section: Introductionmentioning

confidence: 99%

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confidence: 99%

Dynamic Structure of Eddies of the Brazil‐Malvinas Confluence Zone Revealed by Direct Measurements and Satellite Altimetry

Frey,

Kubryakov

2023

JGR Oceans

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Multiple controls on carbon dioxide sequestration in the beagle channel (Southern Patagonia) in early fall

Caetano

Guallar

Martín

et al. 2023

Journal of Marine Systems

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Temperature Spatiotemporal Correlation Scales in the Brazil‐Malvinas Confluence from High‐Resolution In Situ and Remote Sensing Data

Orúe‐Echevarría

Castellanos

Sans

et al. 2019

Geophysical Research Letters

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Ocean frontal systems may act both as barriers and mixers between different water masses, the latter thanks to very energetic structures with relatively short temporal and spatial scales. Here, we explore the high‐frequency temperature variability in the Brazil‐Malvinas Confluence through the joint analysis of novel high‐resolution SeaSoar measurements and sea surface temperature imagery. Surface spatiotemporal correlation scales range between 1.5 and 6 days and between 20 and 50 km, with the shortest scales along the shelf‐break path of the Brazil Current and over the confluence and the longest ones along the Malvinas Current. The spatial scales display minima along the front, at the surface because of the presence of brackish shelf waters and at the subsurface due to both mesoscale and submesoscale thermohaline intrusions. The smallest cross‐frontal vertical correlations, in the 5‐ to 10‐m range, are associated with submesoscale processes. Overall, temperature variability is enhanced at depth in the frontal system.

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Dataset on the RETRO-BMC cruise onboard the R/V Hespérides, April 2017, Brazil-Malvinas Confluence

Cited by 3 publications

References 8 publications

Dynamic Structure of Eddies of the Brazil‐Malvinas Confluence Zone Revealed by Direct Measurements and Satellite Altimetry

Dynamic Structure of Eddies of the Brazil‐Malvinas Confluence Zone Revealed by Direct Measurements and Satellite Altimetry

Multiple controls on carbon dioxide sequestration in the beagle channel (Southern Patagonia) in early fall

Temperature Spatiotemporal Correlation Scales in the Brazil‐Malvinas Confluence from High‐Resolution In Situ and Remote Sensing Data

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