The study of high-frequency (hf) wave groups and the associated low-frequency wave motion is important for the design of coastal structures and it is also a dominant forcing of the coastal morphological evolution. The experimental work over dissipative conditions proposed in this thesis is expected to provide conclusive results about the bound wave growth during hf-wave groups shoaling, associated transfer of energy, influence of such energy transfer on wave group hydrodynamics and long wave dissipation/saturation after breaking.