Modeling dispersion phenomena in tidal environments: use of cellular automata in GIS applications

The purpose of this research is to reach an evaluation of the potential usefulness of cellular automata, a simple and efficient modelling technique for simulation, in describing dynamic phenomena of interaction between elements or parameters relevant for the assessment of environmental quality in lagoon basins. The modelling context is the Venice lagoon with particular attention on the phenomena concerning substances which concur to create pollution. The dynamics of three processes are studied: substance dispersion in a basin, as ruled by hydrodynamic forces; dynamics of interaction between pollutants and vegetation; and interactions between water and sediment. We also realized an interface for data exchange between the module for cellular automata and a GIS marine application in Arclnfo environment.