沿岸域帯水層塩水侵入平面モデル開発に関する基礎的研究

Abstract

This paper proposes a horizontally two-dimensional seawater intrusion model in conjunction with vertically two-dimensional seawater intrusion behavior. In modeling vertically two-dimensional seawater intrusion behavior, the freshwater depth at the coastal line is theoretically modified from zero to the theoretically appropriate value. The positions of the interface between seawater and freshwater in a vertical section can be then obtained. The horizontal model of seawater intrusion is produced through incorporation of the modified interface positions based on the two-dimensional advection-dispersion equation in the porous media. It can be shown that seawater intrusion behavior is described by the proposed model on behalf of three-dimensional model.