Average chlorophyll concentration in the surface ocean (from mi-September 1997 to August 2007) from the ocean color sensor SeaWiFS (NASA). Subtropical gyres, in the center of the oceanic basins, are characterized by very low concentrations of chlorophyll a (dark blue) - Source : NASA's Earth Observatory (http:/earthobservatory.nasa.gov)
Carte de la camapagne du navire oceanographique James COOK
Le trajet du bateau sur fond couleur de la mer.
Deployment of a profiling float (Photo : Jean-Jacques Pangrazi)
Ciliate (Photo : Fabien Lombard)
Large rosette sampler used in the "World Ocean Circulation Experiment". This rosette has 36 10-liter Niskin bottles, an acoustic pinger (lower left), an "LADCP" current profiler (yellow long tube at the center), a CTD (horizontal instrument at the bottom), and transmissometer (yellow short tube at the center). (Photo : L. Talley)
Instrumented buoy (Photo : David Luquet)
Ocean color satellites travel around the Earth at an altitude of about 700 to 800 km.
Siphonophore Forskalia formosa (Photo : Fabien Lombard)
Profiling float (Photo : David Luquet)
Colony of salps Salpa fusiformis (Photo : Fabien Lombard)
Dinoflagellate Ceratium falcatum (Photo : Sophie Marro)
Siphonophores Forskalia formosa (Photo : Fabien Lombard)
This video describes how to perform the Ludion experiment and explains the physical processes involved.
Dinoflagellates Ceratium platycorne var platycorne (Photo : Sophie Marro)
Dinoflagellate Ceratium gravidum. In the video one can observe the movement of one of the two flagella. (Video : Sophie Marro)
Dinoflagellate Ceratium gravidum (Photo : Sophie Marro)
Colony of diatoms genus Bacillaria whose single cells slide against each other (Video : Sophie Marro)
Instrumented buoy (Photo : David Luquet)
