リーフ上の護岸越波に関する研究

抄録

Overtopping rate of waves over a seawall on coral reef flat is experimentally studied. Through comparisons of overtopping phenomena for seawalls built on a uniformly slopping bottom and on a coral reef flat, it is shown that the wave overtopping for a reef coast is strongly influenced by sea surface raise of surf beat. It is then shown that Goda's design diagrams of wave overtopping rate is not refered for seawall on reef flat.
A new method for the usage of Goda's diagrams for seawall on reef flat is proposed. In the method, not only the wave set-up but the sea water level raise of surf beat on the reef flat is taken to account into the design sea level. It is verified by the comparisons with experimental data.