3次元有限要素法による鹿児島湾の潮流解析

概要

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Three-dimensional tidal flow patterns in Kagoshima Bay were calculated using Quoddy3 developed in Dartmouth College. Temperature and salinity were assumed to be uniform and only M2 harmonic component was adopted. The behavior of Lagrange particles scattered on the sea surface was also investigated. The current around the center of Sakurajima Channel increased abruptly and decreased gradually at both flood and ebb tides. The current speed of the bottom layer around the center of Sakurajima Channel was about half that of the surface layer.A strong southward residual current appeared along the west coast of the central basin, as well as a weak northward residual current along the east coast. The surface and bottom residual currents were comparatively different at the center of the basin and the locations where the surface residual current was large. The directions and distances traveled by Lagrange particles were seriously affected by slight spatial and temporal differences of the particles, particularly at Sakurajima Channel. Even in locations with weak residual current, some of the Lagrange particles traveled long distances.
鹿児島大学の論文
2006-12-25