Tidal current in
Xiashimen water area is a kind of clockwise whirl current. Based on analysis of tide,
tidal current, wave and sediment, the distribution of suspended sediment concentration
was set up. According to channel deposition characteristic under whirl current, the paper
estimates deposition amount of channel which is planned to be excavated. Considered
from channel deposition and its maintenance, it is feasible to excavate twenty thousand
to thirty thousand tone channel outside of Xiashimen entrance.