Atlantic Ocean

Port of departure : Abidjan (Côte d'Ivoire)

Port of return : Abidjan (Côte d'Ivoire)

IRD CENTRE D'ABIDJAN

Rue du Chevalier de Clieu

15 BP 917

ABIDJAN 15

225.24.37.79

rep@ird.ci

• BIOLOGICAL OCEANOGRAPHY
• PHYSICAL OCEANOGRAPHY
• CHEMICAL OCEANOGRAPHY

• -Continuous logging of the current between 0 and -250 m using an ADCP current meter installed on ANTEA's hull, and of surface temperature and salinity using the SeaBird TSG installed aboard RV ANTEA.
  -Continuous logging of meteorological parameters (MÉTÉO France station), and of navigation parameters from various systems.
  -Releasing a CARIOCA drifting buoy, measuring partial pressure of CO2. The deployment was done on behalf of LODYC at the Equator around 5°W.
  -10 drifting buoys were released at different latitudes along the 20°W meridian (5 of the buoys were supplied by P. Flament of the University of Hawaii).
  -106 stations were performed, two of which were used at the start and end of the cruise to check and calibrate the various measurements. During these stations the following operations were performed; a CTD cast at -250 m (SeaBird 911 sensor) with samples taken at 12 levels (SeaBird Carousel), a horizontal hyponeuston net haul (only at some stations), one or two vertical hauls with plankton net.
  -10 "Dandonnette" stations performed. Titration of nutrients (NO2, NO3, PO4) at 12 levels at each station,; salinity at 2 levels at each station to check the CTD sensor; Filtration.
  -Zooplankton: horizontal net haul at surface and a vertical haul between O and 100 m or two vertical hauls, one in the homogeneous layer and the other below it. Samples were preserved in formaldehyde and/or frozen for studies on the biomass and gut fluorescence. Incubations were performed to study grazing.
  -Determining the chlorophyll count at 10 levels at each station (to be specified...). - Processing and visualization of the main "physical" results, particularly the complete processing of ADCP data during cruise.