2017 Volume 39 Pages 27-30
The purpose of this study is to compare the tide level of 2 points at Osakikamijima island. This study is carried out the accessory study of an observation experiment for the tide level by onboard GPS. The results indicated there were few differences of the tide level in 2 points in the peaceful weather. And there were many differences of the tide level in 2 points in the rough weather. And authors observed the tidal wave by the 2015 typhoon No.15.