Distribution of short wind-waves affected by internal wave

An experimental study of the interaction between short wind-waves and internal wave is reported. It is shown that at low wind speed internal wave excited by moving object in stratified fluid changes the distribution of short wind-waves by changing surface current field. This phenomenon is well explained by a wave-current interaction mode. It implies that the wake of under-water moving object can be distinguished from the changes of the distribution of short wind-waves.