抄録
In recent years, the pollution of the groundwater is a serious problem. In the case of groundwater contamination, the behavior of the polluter neighborhood is handled as an advection-dispersion phenomenon in the unsaturated vertical penetration field. And it is important to predict the transport of the pollutant in such an unsaturated field. The advection-dispersion analysis is used for the prediction method. Macroscopic dispersivity is one of the important values when conducting the advection-dispersion analysis. But the method that determine the macroscopic dispersivity in the unsaturated zone is not established. In this study, conducting the advection-dispersion analysis at such an unsaturated infiltration field, the property of macroscopic dispersivity which is obtained from numerical analysis is investigated.
