Hindcast of Long-term Shoreline Change due to Coastal Interventions at Namhangjin, Korea

Abstract

ABSTRACT Chang, Y.S.; Huisman, B.; Boer, W., and Yoo, J., 2018. Hindcast of Long-term Shoreline Change due to Coastal Interventions at Namhangjin, Korea. In: Shim, J.-S.; Chun, I., and Lim, H.S. (eds.), Proceedings from the International Coastal Symposium (ICS) 2018 (Busan, Republic of Korea). Journal of Coastal Research, Special Issue No. 85, pp. 201–205. Coconut Creek (Florida), ISSN 0749-0208. Namhangjin beach is protected by multiple submerged breakwaters (SBWs) which were built to protect the ~4 km long sandy beach. A coastline model (UNIBEST) was used to investigate the long term effect of the SBW structures on the beach. The model computes long-term shoreline changes due to coastal structures as a result of the strong longshore sediment transport gradients at the structures. Bathymetry data of the shoreface and nearshore profiles were obtained from a field survey, while wave conditions from offshore WAM hindcast (Wave Modeling Group) were transformed towards the nearshore with the Delft3D+SWAN mode...