AQUASIM - A TOOL FOR SIMULATION AND DATA-ANALYSIS OF AQUATIC SYSTEMS

A survey over the capabilities of a new simulation and data analysis p rogram for laboratory, technical and natural aquatic systems is given. In this program, the spatial configuration of a model system is repre sented by compartments, which are connected by links. The program allo ws the user to define an arbitrary number of substances to be modelled and it is extremely flexible in the formulation of transformation pro cesses. It not only offers the possibility of performing simulations o f the time evolution of the user-specified system, but it provides als o methods for system identification (sensitivity analysis and automati c parameter estimation) and it allows us to estimate the uncertainty o f calculated results. These features, together with the user-friendly interface, very much support scientist in analyzing their data. Three examples illustrate the capabilities of the program.