  By taking advantage of laser Doppler velocimetry (LDV), we explore the
existence of discrete wave cascades on fluid interfaces excited upon
monochromatic excitation. We study viscous liquids of variable capillarity
spanning a broad range of frictional stresses. The existence of an inertial
regime of weak surface wave turbulence (weak-SWT) has been pointed out as a
cascade of discrete modes with amplitudes compatible with universal
Kolmogorov`s scaling. The transit from weak to strong surface turbulence has
been explored with this tool revealing the importance of inertia over surface
forces to describe the crossover.
