A criterion for determining the impact on shorelines caused by altering wave transformation

An evaluation of the possible influence of man-made changes to wave transfo rmation processes at a particular site requires an extensive modeling effor t that yields quantitative results suitable for decision-making. Analysis o f a proposed offshore sand mining project at Sandbridge Shoal, near Virgini a Beach, Virginia, serves as an example of such an evaluation Using the cri terion established in this study, it is demonstrated that the originally pr oposed separation of the sand resource into two dredging sites will cause u nfavorable results at the shore. A favorable alternative is proposed which will reduce breaking wave height modulation along the coast. and thus, the gradient of longshore sediment transport rate.