エスチャリ－における長周期波の数値計算-田辺湾の潮流・吹送流シミュレ－ション-

Abstract

A numerical model for long wave propagation in an estuary is developed in terms of the time fractional finite difference method, in which three calculation steps of advection, diffusion and propagation are excuted by effective scheme for each step.The method of characteristics, ADI method and iterative ADI method are employed in this study making reference to the numerical solvers developed bySOGREAH & INH (Laboratoire National d'Hydraulique) in 1982. Open and moving boundary conditions are also discussed and incorporated into the model. Effects of wind stresses and moving atmospheric pressure are introduced in the developed model to calculate wind-induced currents in Tanabe bay where several kinds of observations, such as current profiles by ADCP, STD, tides etc., haye been conducted by Shirahama Oceanographic Observatory, DPRI, Kyoto University for a period of 25 years.