SHOM cruise .
Characterizing the variability of hydrological and current measurement features and particulate fluxes in two canyons of Le Planier (station PL1000) and Lacaze-Duthiers (station LD1000) located at the easternmost and westernmost tips of the Gulf of Lion.
SHOM cruise
Characterizing the variability of hydrological and current features and particulate fluxes on the continental rise of the Gulf of Lion and in the deep convection zone. Monitoring of deep benthic communities in the western canyons and on the continental rise of the Gulf of Lion.
<p>Studying eddies related to water circulation in the Gulf of Lion. The LOPB and LOMIC labs will implement a technique never used before for coastal systems, i.e. tracking of a water mass using the chemically inert compound sulphur hexafluoride (SF6). After injecting the tracer from aboard RV Suroît, the substance's dissemination will be estimated thanks to real-time measurements performed on board. To monitor the eddy structure, RV Suroît will be accompanied by RV Tethys II. Several innovative devices or systems will be deployed simultaneously (measuring currents using Doppler acoustic profiler (with the moorings already in the zone since 2009 and the 2 vessels' shipboard current meters); Measuring surface currents using an array of HF radars installed onshore; several satellite-monitored drifting buoys, including a CARIOCA buoy which will continuously log the physical parameters and CO2 trends near the surface; autonomous underwater gliders fitted with various biogeochemical sensors; real-time satellite observation of surface temperature and phytoplankton concentrations; and operational numerical modelling. The measurements will be analyzed on board and will be used to locate the eddy's position in order to guide the vessels to the drifting research zone. The original aspect of LATEX is that it combines expertise in physical oceanography and marine biogeochemistry to try and penetrate the mystery of these mesoscale structures and particularly to assess the role they play in transfer of matter between the coastal zone and the open sea. The fate of organic matter will be closely observed during this monitoring of the drifting eddy structure to understand how the biogeochemical properties (quality of organic matter, stoichiometry of particulate matter, primary and bacterial production) evolve over time in this volume of water enclosed by physical processes.</p>
Retrieving an array of moored current meters recording subtidal circulation on the ocean margins of the Bay of Biscay (Armorican and Aquitaine shelves and slopes). Related hydrological measurements taken. This falls under the ASPEX project.
SHOM cruise
Assessment of small pelagic species resources in the Gulf of Lion using echo-integration and trawl hauls to identify the observed echoes. This is related to the SIDEPECHE programme.
Weekly cruise to monitorize physical and chemical variables in Rias Baixas (Galicia)
Weekly cruise to monitorize physical and chemical variables in Rías Altas (Galicia)