2022 年 78 巻 2 号 p. I_235-I_240
Miyazaki Sun Marina, which was constructed on the north side of Miyazaki Port, has been suffering from a sedimentation problem at the entrance to the marina channel since it was opened. No drastic solutions to this problem have been shown yet, and a dredging work has been done repeatedly around the entrance to the channel in order to keep safety navigation. This study investigated this sedimentation problem with using 3-dimensional numerical model, Delft-3D. The numerical simulation reproduced the sedimentation phenomenon around the entrance to the channel, and the sediment transport was discussed by referencing flow fields. This study also discussed the relationship between this sedimentation problem and the beach restoration program that has been implemented on the north of the marina. Furthermore, this study proposed a solution to mitigate the sedimentation problem at Miyazaki Sun Marina.
