Edmo J Campos¹, Cesar B Rocha², Emmanuel K Magnangou¹ and Arthur H Sandonato³, (1)USP University of Sao Paulo, Physical, Chemical and Geological Oceanography, São Paulo, Brazil, (2)USP University of Sao Paulo, Physical, Chemical and Gelogical Oceanography, São Paulo, Brazil, (3)USP University of Sao Paulo, Physics, São Paulo, Brazil