Hydrological variability of the upwelling and the filament in Cape Juby (28°N) Morocco (2010)

The main target of this work is the investigation of the coastal upwelling phenomenon and the physical processes which result from it as the filament and exchanges of water masses between north and south of the Cape Juby (28°30'N), connecting the Moroccan coast and the Canary Islands. Our study during the year 2010 shows seasonal variability of climate parameters, as speed and direction of the winds, have a direct impact on the upwelling phenomenon and marine circulation of cape Juby. This area had an invasion of oligotrophic waters manifested by a thermo-halin barrier during fall and spring seasons. This situation is manifested, first by a weaker activity of upwelled cold deep waters, and secondly by a Northern circulation of hot and saline sub-surface water. During this manifested situation, the formation of the filament structure is depending on the variability of the marine circulation.