LONG-TERM RESPONSE OF SHORELINE AND DEPTH-CONTOURS AFTER NEARSHORE SAND MINING BY EQUI-WAVE PHASE POTENTIAL CONCEPT

Shoreline changes as a result of increased anthropogenic activities in nearshore zones have caused unexpected damage to the hinterland. However, the current status of shoreline change prediction remains at a level where the basic concept is unestablished, and the existing method using the longshore sediment transport formula has uncertainties in the related coefficients and is limited in its scope of application. This study aimed to characterize the ultimate shoreline change due to topographical alteration by applying the concept of Equi-Wave Phase Potential (EWPP) (Ria and Lee, 2023) and proposes a numerical methodology for converging to the new morphological equilibrium due to the change of wave phases after sand mining.