EFFECT OF OPEN BOUNDARY CONDITIONS ON THE TIDAL MODELING AROUND THE WEST COAST OF KOREA

Abstract

The aim of this study is to investigate the effect of open boundary conditions on the tidal elevation from major tidal constituents around the West Coast of Korea (WCK). To obtain a detailed tidal forcing at open boundaries, three well-known assimilated tidal models; NAO.99b, FES2014 and NAO.99Jb, have been applied to interpolate the offshore tidal boundary conditions. Before applying the results obtained from these tidal models, they have been validated against the observation data. The numerical simulations are based on two different open source numerical models; the Finite Volume Coastal Ocean Model (FVCOM) and TELEMAC. In order to find out the dependence of the tidal elevation around the WCK on the variations of open boundary forcing, a sensitivity analysis of coastal tide elevation was carried out. Consequently, it shows that the tidal elevation around the WCK has different local responses to the offshore tides at the open boundaries; and the numerical results can provide better tidal information around the WCK than the assimilated tidal models.