EXTRACTION OF TRANSVERSAL AND LITTORAL SEDIMENT TRANSPORT VECTORS FROM SHORELINE OBSERVATION DATA

To mitigate beach erosion problems requires a direct understanding of longshore trends or periodic cross- shore evolutions. Furthermore, it is necessary to understand how transversal and littoral sediment transport when high waves incidence and the waves gradually calm. Shoreline changes are mainly caused by a combination of long-term background erosion, medium-term redistribution erosion, and short-term episodic erosion. Although it is important to specifically identify the causes of beach erosion, there is a lack of research that clearly classifies various phenomena from observed coastline data. Therefore, this study suggests a methodology to extract transversal and littoral sediment components from observed shoreline data according to the conservation law of sediment mass.