Abstract
Saturated-unsaturated flow inversion program with adjoint method and least norm method was made to estimate saturated hydraulic conductivity and boundary conditions for multi-layers heterogeneous aquifer model. Vertical two dimensional numerical experiments assuming inclined ground consisting of three layers with different permeability were carried out using this program. Some inversion were carried out by changing the cofficient of least norm term to investigate the strength of constraints on the unknown parameters based on the reference value. The result show that it is possible to estimate the uniqe value of saturated hydraulic conductivity and boundary conditions for multi-layers heterogeneous aquifer model by the method.
