沿岸水域における埋立が河口からの洪水流出に及ぼす影響の解析

Abstract

This paper presents an algorithm for mathematical simulation model to estimate the influences of bay-area reclamation on flood efflux in a esuary by means of finite difference numerical method. To be applied a new three-dimensional model is emphasized for the analysis of the flow structure and density effect. Following the basic equations, the numerical model using leap-frog scheme is derived in detail.After the calibration of the eddy viscosity and diffusivity, a good agreement is realized between the observed and calculated water stages. A simulation study is also made to predict water stage rise clue to reclamation and the density difference is found to play effective roles.