Abstract
It has been reported that the seabed in the Akashi Strait, a crucial entrance to the Osaka Bay, has risen 5 m due to a recent major tremor, a scale believed to be certain to cause a major change in the residual circulation of the Osaka Bay. The present study investigates tidal exchange phenomenon carrying out a float dispersion study using both square-shaped model bay and Osaka Bay. The result shows that either embankment or seabed swelling does affect the major circulation and hence tidal exchange of a bay
