Dynamics of Estuarine Circulation in Semi-closed Inner Bay

J. Ocean Eng. Technol. 2001;15(4):34-45.

폐쇄성 내만에서의 Estuary순환의 중요성

김종인,류청로

부경대학교 해양공학과,부경대학교 해양공학과

Keywords: Estuarine circulation, Semi-closed inner bay, 3-D baroclinic flow model, Baroclinic, Tidal residual current, Suspended solids particles

핵심용어: 하구순환, 폐쇄성 내만 3차원흐름모델, 조석잔차류, 부유토사입자, 침강속도, 퇴적특성

Abstract

In the persent study, we conducted numerical experiments using a three-dimensional baroclinic equation model and a Lagrangian method for clarifying the hydrodynamics in Osaka Bay under the yearly mean discharge and visualizing the behaviour of particles of different settling velocity discharged from Yodo River and sedimentation pattern on the sea bottom. Particles are transported from the Yodo River to the south direction by the residual circulation of the bay head at the first stage, and after most of suspended solids particles are settled down at any layer and returned in the south-east coastal area through bottom layers by an estuarine circulation. The results show that estuarine circulation plays an important part of suspended solids transportation in the Osaka Bay.