This study presents the analysis of the water surface elevation, velocity and suspended sediment
concentration measurements obtained at a large wave flume under mobile bed conditions. The wave
reproduced Erosive and Accretive conditions, and included Monochromatic, short waves perturbed
with a free long wave, Bichromatic and Random conditions. Each tested condition started from a
handmade 1/15 slope and lasted for an approximate time period of 2.4 hours (6 runs of the selected
wave condition), to compare the different beach profile developments and, in particular, the events
that control sediment transport in the swash and surf zones. All Erosive tested conditions produced a
shoreline retreat and a bar at the breaking area whose development in time is directly correlated to
the length of the breaking area. On the other hand, not all Accretive conditions present a shoreward
transport, and random conditions do not seem to alter the initial profile. The processed data show
the suspended sediment event control produced by the existence or absence of wave-backwash
interactions in the swash zone. The existence of these interactions, and their number within the
wave group, will be a key parameter in controlling the sediment stirring, water velocity magnitudes
and, therefore, the suspended sediment fluxes in the inner surf and outer swash.