Abstract
By calculating coastal sediment transport rate and analyzing historical data in this paper, the effect on trend of coastal geomorphological evolution after the construction of the artificial islands in Longkou Bay is studied. The results show that the north coast of artificial islands is in a state of equilibrium in sediments erosion and deposition, the channel between land and islands is in strong deposited state, the coast erosion degree outside of the wave shadow zone where in the south of Jie River has been strengthened. The deposited rate caused by sediments that the Jie River carried and coastal sediment transported in the channel between land and islands is about 12.5cm/a after the construction of artificial islands.
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