Effects of Pulsating "Wind on Velocity Profiles and Microstructures

Abstract

Friction velocities of pulsating winds were measured, as well as slope and curvature distributions of thedisturbed water surface. The results obtained with the same average wind speed, but with pulsations of various frequencies and amplitudes are compared. The pulsations are found to be critical on wind and wavestructures when the regime of the wind boundary layer is affected. The influence of pulsations becomes secondary, when the wind boundary layer is aerodynamically rough. A distinct feature of this regime, generallyoccurring in the field, is that more capillaries are produced by pulsating winds.