A model to advise on groundwater evaluation and survey (MAGES). 2. Numerical validation of the transport model

MAGES is a software developed at INRS-Eau (Canada) for forecasting pollutio n hazards in groundwater. The transport model uses stationary truncated tem poral moment equations instead of the classical time dependent advection-di spersion equation. The aim of this work is to propose a numerical validatio n of the method by comparison with both analytical solutions in homogeneous medium and a sophisticated lagrangian moder of transport in heterogeneous medium. It is shown that the temporal moment equations perform well, while saving on computation. This gives MAGES some abilities in water management problems which compensate for the poor knowledge of the transport parameter s through numerous stochastic simulations. ((C) Academie des sciences / Els evier, Paris.).