Author(s): Shigeru. Kato; Van Vinh Dinh; Dung. Quyen Le; Takumi. Okabe
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Keywords: Storm Surge; Circulation; Mikawa Bay; Ise Bay; Numerical Simulation
Abstract: This study investigated the mechanism of storm surge and related water circulation in Mikawa Bay due to Typhoon Melor (TY0918) using numerical simulation. The Regional Ocean Model System (ROMS) was applied in Ise and Mikawa Bays. The sea surface wind and atmospheric pressure in the Grid Point Value (GPV) were used in the storm surge simulation. The trend of water surface elevation during the storm surge even at tide station in Mikawa Bay was calculated although the maximum water level of the storm surge was underestimated. By the simulation, the water surface rise in Ise and Mikawa Bays by Typhoon Melor was illustrated in time and space. It was made clear that the change of wind direction was the important factor in this storm surge occurrence, which has supposed by Aoki et al. (2011) by the analysis of observation data in Mikawa Bay. This study also demonstrated that the huge water mass propagation induced the counterclockwise circulation in Mikawa Bay although one-way currents (inflow or outflow) corresponding to the tide stage were generated in the bay almost entirely. The storm surge occurrence also brought on the remarkable change of current field in Mikawa Bay.
Year: 2014