Using a coastline evolution model to assess the effects of coastal stabilisation measures on Nha Trang beach

Abstract

Nha Trang city has a great advantage in sea tourism with a beautiful beach and a group of bays and nearshore islands. However, Nha Trang coastal erosion has appeared more frequently due to waves, wind, tidal currents, and extreme weather events in recent years. Protecting and nourishing the beach is essential to maintain the tourism advantage of the city. This paper presents the assessment results on the effectiveness of some shore protection alternatives for the Nha Trang beach using a combination of the SWAN wave model for a larger area and the GENESIS coastline evolution model. The simulation results show the performance, credibility, and applicability of SWAN and GENESIS models to analyzing and selecting an appropriate coastal protection plan for the Nha Trang coast, and more generally, the South-Central coast of Vietnam.