Use of numerical modeling to identify the transfer function and application to the geostatistical procedure in the solution of inverse problems in groundwater

The restoring of the pollutant release history makes use of transfer functions (TFs) usually known by analytical formulation. In many cases the computation of an analytical TF is not possible; this fact limits the application of the inverse procedures to very simple conditions or it forces to drastic simplifications of complicated problems. In this paper a new procedure, useful to compute the numerical transfer functions in transport problems with no analytical solution, is outlined. This method, analogous to the computation of the Instantaneous Unit Hydrograph (IUH) in surface hydrology, makes use of mathematical modelling.