How do waves change the shape of a wave-dominated delta?

In wave-dominated deltas, the interaction between river discharge and marine energy significantly alters the landform's morphology. Waves act as a powerful force that reworks the sediment delivered by the river, often removing fine-grained materials and smoothing the delta's outer margin.12

This process typically results in a smooth, cuspate shape with few distributaries, contrasting with the irregular, digitate forms seen in river-dominated deltas. Furthermore, waves and associated longshore currents can transport sediment along the coast, which may cause the river mouth to be diverted markedly. In these high-destructive environments, much of the sediment is reworked before final deposition, often forming arcuate sand barriers near the river mouth.132