Studies on Groundwater Flow System with Saltwater - Freshwater Interface

Abstract

Saltwater - freshwater interface is well known a keyword of groundwater development at coastal area. Problems of groundwater salification has been expanded to the deep zone as years go by. The history of saltwater - freshwater interface study is shown from the viewpoints of theoretical research and practical research in this paper. Due to the groundwater flow, the up-end of the interface is squeezed to the offshore and makes a submarine groundwater discharge, in usual. The evidence of groundwater discharge is found even in the deep sea floor, and the groundwater flow is thought to be formed along the interface, in the recent studies. The form of saltwater - freshwater interface and groundwater flow along the intertace have been made clear by the submarine groundwater discharge research and the progress of groundwater flow simulation.