Abstract
This study investigates the generation mechanism of storm surge and the variability of water mass structure in Mikawa Bay under the influence of Typhoon 0918 on the basis of meteorological and oceanographic observation data. As a result, it could be said that the storm surge observed in Mikawa Bay was attributed to the inflow of water mass from Ise Bay as a free long wave due to the sudden change in wind direction. Moreover, the observation data showed that the water mass structure was significantly changed during the typhoon period with strong wind and large floods after typhoon passing.
