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摘要
This study simulated the hydrodynamic effects prior to and after the construction of Quanzhou Bay Artificial Island using a semi-implicit Lagrangian Eulerian finite difference method. Triangular meshes were used to refine mesh in the sea area surrounding the island in the model. To increase the accuracy of the simulation, the minimum mesh length was set to approximately 5 m. The simulation results indicated that during the falling tide, the flow velocities at the front of the berths on the west end and on the south side of the island increased by 0.2-0.4 m/s, and flow velocity in the main navigation channel between south Shihu and Dazhui Island decreased by 0.05-0.2 m/s. During the rising tide, the flow velocities at the front of the southwest end and south side of the island increased by 0.1-0.4 m/s, and the flow velocity in the main navigation channel between south Shihu and Dazhui Island decreased by 0.05-0.1 m/s. After construction, sediment concentrations decreased in the main navigation channel on the south side of Quanzhou Bay, in the channel to the north of the island, and in the marine space west of Baiyu. The waters between the Shihu Port area and the island underwent erosion and siltation within a range of -20-20 cm/a, which indicated slight sedimentation. The change of the movement rule of tidal current and sediment will reduce the tidal prism and self-purification capacity of bay and thus affect the structures and functions of the marine ecosystem.
- 出版日期2018
- 单位国家海洋局第三海洋研究所
