TY - CPAPER T1 - The vicinity of the Strait of Gibraltrar: A source of a permanent high productivity A1 - Minas,H A1 - Coste,B A1 - Minas,M UR - https://archimer.ifremer.fr/doc/00000/1516/ KW - MED, Gibraltar Strait KW - Temperature effects KW - Nitrates KW - Phosphates KW - Water mixing KW - Water masses KW - Tracers KW - Oxygen minimum layer KW - Satellite sensing KW - Upwelling KW - Nutrients (mineral) KW - Primary production N2 - Satellite infrared imagery shows that a cooling of the sea furface occurs in the Strait of Gibraltar and along the Spanish coast in the Alboran Sea. Since this cooling has an internal origin, it implicates also a nutrient transport into the photic zone. A high chlorophyll area off the Spanish coast, also shown by ocean color imagery (CZCS, Nimbus 7) demonstrate a high productivity. Hydrological and chemical observations made during the French "MEDIPROD IV" cruise on the Jean-Charcot allow to explain this high productivity. The high productivity entertains at mid-depth, by organic sedimentation, an oxygen minimum layer which corresponds to a nutrient maximum (phosphate and nitrate). This high biological activity is useful for hydrological purposes since the tracer qualities of biochemical parameters lead to a better understanding of the circulation pattern and especially of the origin of the Mediterranean outflow. Y1 - 1984/11 CY - Production et relations trophiques dans les ecosystemes marins. Yalta 27 Octobre-2 Novembre 1984 SO - Actes de colloques. Ifremer. Brest [ACTES COLLOQ. IFREMER.]. 1984 ID - 1516 ER -