Special characteristics of spreading of passive anthropogenic pollutants over local sources in water and air environments

An integral hydrothermodynamic model and dimension theory are used to describe the rise of non steady convective plume over a point source of heat and passive tracer in a neutral environment. Self similarity regimes of convective plumes propagation are obtained. A technique of numerically and analytical solving the self similar equations is considered. The represent solutions are correlated with the available experimental date.