1949 年 58 巻 6-7 号 p. 213-217
Tidal current in a, narrow strait can be inferred from the tides at both ends of the strait. That is, if h be the difference of height of S ea surface at both ends, the velocity of tidal current, v, at a point within the strait is expressed by the formula
where c is a constant such that o<c<l, and g is the acceleration due to gravity. And the turn of the current or the slack water lags behind the time of h becoming zero by some quantity peculiar to the point.
In the present paper, the characteristics of the tidal current in the Simonoseki Straits were described, and prediction was made for the tidal current at a point in the middle part of the strait by the above method, which showed a good agreement with actual observations.