Vol. 16 No. 2 Marine Science Bulletin Oct. 2014Received on Jul. 10, 2014Corresponding author: ******@ modeling of seabed morphological effectsfrom the construction of artificial islands in Danzhou,HainanYING Xiao-ming, JIA Hou-lei, CAO Ling-long, XIE JianSouth China Sea Marine Engineering and Environment Institute, State Oceanic Administration,Guangzhou 510300, Guangdong province, ChinaAbstract: Haihua Islands is a large artificial island in Danzhou, Hainan. Theconstruction of Haihua Islands changes the hydrodynamic environment of Yangpuwaters, and further affects its morphological change. Delft3D is used to set up a twodimensional nested hydrodynamic and sediment model for Yangpu waters in this paper,and this paper focuses on simulating the velocity and morphological change due to theconstruction of Haihua Islands after the verification of the model. The seabeddeposition is small because of low suspended sediment concentration and less sandsource near Yangpu waters. The bed level erodes in the south area of Xiaochan Reefand the Yangpu channel due to the velocity increase in the : Haihua Islands; seabed morphological effect; numerical modeling1 IntrodutionThe regional marine construction of Haihua Islands is located in the Yangpu waters inDanzhou ,Hainan (Figure 1), near the Baimajing Town. The project intends to adopt theform of an offshore artificia