Shoreline Planform Stability of Embayed Beaches Along the Malaysian Peninsular Coast

Abstract

Ab Razak, M.S.; Suryadi, F.X.; Jamaluddin, N., and Mohd Noor, N.A.Z., 2018. Shoreline Planform Stability of Embayed Beaches Along the Malaysian Peninsular Coast. 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. 631–635. Coconut Creek (Florida), ISSN 0749-0208.The existence of embayed beaches is pronounced along the coast of Peninsular Malaysia. The stability of such beaches is yet to be confirmed. The present study aims at investigating the shoreline planform stability on the east and west coasts of Peninsular Malaysia. 190 embayed beaches were found along the Malaysian Peninsular coast, including natural beaches and man-made beaches. Of these, 139 beaches were on the west coast while 51 beaches were on the east coast. Results of the MEPBAY model show along the east coast, 45%, 51% and 4% were classified as the static, dynamic, and natural beach reshaping, respectively. Beaches on the west Peninsular coast that is mainly characterised by the muddy coast were more pronounced to be in the static state which comprised of 85% compared to the beaches on the east coast, that are mostly sandy. While, another 15 % were fall under dynamic equilibrium state. Sediment supply from the river, improper placement of coastal structures, sediment bypassing at headland are some possible factors that may cause the dynamic and instability of the embayed beaches studied.