Numerical analysis of ocean and inner bay wave fields induced by Typhoon T0416 focusing on Ibusuki Coast preservation

Abstract

For the preservation of a tourist coast, the Ibusuki coast located at the mouth of Kagoshima Bay, wave characteristics as a driving force of sediment transport should be made clear. It is necessary for this purpose to investigate the wave fields of storm waves developed in the Pacific Ocean, swells intruding into the bay, and local wind waves developed inside the bay. The shielding effects of ocean wave penetration into the bay by the Osumi Islands and the Satsuma-Osumi Peninsular were discussed with the outputs of SWAN wave simulation and WRF meteorological simulation for the case of Typhoon T0416 that is the severest case for beach erosion of the Ibusuki coast.