Abstract
Wave reflection and transmission characteristics about a curtain-walled breakwater of gravity-type were examined in both regular and irregular wave environments. At first, the representative wave analysis for a group of irregular waves with different statistical properties was adopted to examine reflection and transmission coefficients of the breakwater. These coefficients were also obtained for regular waves and compared with each other. Secondary, frequency characteristics of reflected and transmitted waves about the breakwater were examined through the use of spectral analysis. Reflection and transmission coefficients as a system function of a linear system were obtained and again compared with those of regular waves. It was confirmed that the reflection and transmission coefficients for regular waves can be used for the case of irregular waves if the significant wave is used as a representative wave. However, it must be noted that frequency characteristics of incident and transmitted waves are different about the breakwater.
