GROUNDWATER VELOCIMETER USING PAPER DISK AND ITS APPLICATION TO THE GROUNDWATER MOVEMENT IN THE COASTAL SAND BAR

Abstract

 The newly developed groundwater velocimeter which uses paper and ink was applied to the observation of the movement of the groundwater in the coastal sand bar on September, 2013. This measurement method uses tailings of the eluted dots on the paper. As a result of revising the analytical methods of the tailings of the paper, we could measure groundwater velocity and its direction successfully. We clarified that the groundwater in the coastal sand bar discharges while sand bar exposes in low tide.