Abstract
In spite of occur usually wave breaking, it is defficulte to make clear its a phenomenon. Especially, breaker on the Submerged Breakwater is complicates by existence return current. This research is attemped to measureed velocity field using PTV (Particle Tracking Velcimetory) and carried out to elucidate its time-varied magunitude and direction. Moreover, we measured surface elevation around the circumference submerged breakwater at the same time and calculated the mean sea level.
