Studies of water level rise by entrained air in the surf zone

This paper is concerned about the data analysis of void fractions in the surf zone measured by a conductivity probe. The experimental results show that void fraction distributions are the function of water depth and probe immersion time (duration of breaking event). Air volume of air bubbles calculated from void fraction data is found to be a function of shoreward distance. Moreover, this study focuses on the water level rise by entrained air would be a significant percent of wave set-up and scale effects occur in terms of air entrainment for Hb < 0.30 (m).