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

ORÚE-ECHEVARRÍA, D. ; GUALLAR, C.; MARTÍN, J.; PEÑA-IZQUIERDO, I.; ROGET, E. ; SALVADOR, J.; VIÚDEZ, A.; CASTELLANOS, P.; MARRASÉ, C.; PANIAGUA, G.; RODRÍGUEZ-FONSECA, B.; SALAT, J.; VIDAL, M.; PELEGRÍ, J.L.; MAROTTA, H.; MASDEU-NAVARRO, M. ; PUIGDEFÁBREGAS, J.; ROSELL-FIESCHI, M. ; VALLÈS-CASANOVA, I.

DATA IN BRIEF

ELSEVIER SCI LTD

Año: 2020 vol. 30

2352-3409

This dataset, gathered during the RETRO-BMC cruise, reports multiple-scale measurements at the Confluence of the Brazil and Malvinas Currents. The cruise was carried out between 8 and 28 April 2017 onboard R/V Hespérides, departing from Ushuaia and arriving to Santos. Along its track, the vessel recorded near-surface temperature and salinity, as well as the horizontal flow from 20 m down to about 800 m. A total of 33 hydrographic stations were completed in a region off the Patagonian Shelf, within 41.2S-35.9 and out to 53.0W. At each station, a multiparametric probe and velocity sensors were deployed inside the frame of a rosette used to collect water samples at selected depths; these samples were later used for several water analyses, including inorganic nutrient concentrations. Microstructure measurements were carried out in 11 of these hydrographic stations. In addition, two high-resolution three-dimensional surveys were conducted with an instrumented undulating vehicle between 40.6°S-39.0°S and 55.6°W-53.8°W. Lastly, eight high-frequency vertical profilers were deployed in the region and five position-transmitting drifters were launched. These data allow the description of the confluence from the mesoscale to the microscale, and provide a view of the variability of the frontal region on time scales from days to weeks.