Abstract:To study the characteristics of rip current by intersecting wave on mild slope barred beach with rip channel

the experiment of rip currents by intersecting random wave on the mild-slope barred beach with rip channel was done.Rip currents resulted from the two intersecting wave trains produced by the reflection of obliquely incident waves on a vertical wall which stands perpendicular to the coastal line.The two intersecting waves were with the same amplitude and frequency

but the opposite angle. The results of the distribution of wave heights

setup and velocity measuring by ADVs near the rip channel were shown to analyze the characteristics of rip currents on barred beaches with rip channel of mild slope.Shoreward of the bars

the alongshore pressure gradients between the bars and channels owing to the stronger breaking on the bars drive feeder currents that converge at the channels and turn offshore as rip currents.