Artificial sandbar or shoreface nourishment plays an important role in coastal protection. While the lee effect of an artificial sandbar has been extensively investigated and its physical mechanism is relatively clear, the morphological response of artificial sandbar itself subject to large waves has not been fully understood. Physical experiments were conducted in a wave flume, considering different initial equilibrium profiles and different designs of artificial sandbar. Under large wave conditions, we observed onshore net sediment transport as well as onshore migration of the sandbar with its seaward slope becoming milder and its height decreasing. Experimental results suggest that the artificial sandbar could significantly affect the overall behavior of beach response to storms, and this effect is dynamic as sandbar evolves.
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