A numerical model for a coastal discharge

8 pages, 3 figures[EN] A simulation model is presented for the diffusion withn the sea of a solved pollutant supplied form a coastgal source by a water discharge of constant flow rate. We obtain the steady state solution for some standard conditions and carry out a sensibility analysis by varying in two orders of magnitude four parameters representing the advection and diffusion characteristics of the discharge. The model has a high stability and shows that the pollution effect has been reduced to 10% in a distance of 1 Km from shore[ES] Muchos focos de contaminación del mar consisten en vertidos costeros en forma de flujo superficial o submarino, especialmente cuando el gente contaminante es un líquido o si se usa agua como medio de transporte portador o diluyente. Tal es el caso de las aguas residuales urbanas o industriales donde el trasportador es agua dulce o el de las centrales nucleares en que se usa agua dulce o marina como medio refrigerante. [...]Peer reviewe