海岸地下水の鹽分變化について

Abstract

There are three types of Cl'-content variation with the level changes of ground-water at some wells in the Beppu Hot Springs and the Coast of Shikoku. The amount of Cl'-content shows the positive and negative correlation, and complex to the water-level. The relations in the case of the tidal effect are as same. The phenomena are illustrated as follows. The stratified water of the various densities being coned, the water velocity decreases with the depth according to decreasing pressure gradient, and the Cl'-content in the water flowing into the pipe depends on the velocity of each ground-water stratum, and its Cl'-content.