Berhanu et al. supplementary movie 1 3D Free-surface reconstruction for the highest forcing amplitude σ_h =3.6 mm. The animation corresponds to 2.5 s in real time. Steep gravity waves generate smaller capillary waves. Berhanu et al. supplementary movie 2 Simultaneous plot of wave-field gradient map and spatial spectrum f wave elevation. σ_h =3.6 mm. The animation corresponds to 2.5 s in real time. Transient generations of capillary wave train are associated with sudden increases of spatial spectrum at small scale.