Field investigation of seasonal variations impact on flow depths and velocities in the swash zone

Abstract

Most studies of the hydrodynamics and sediment transport in the swash zone in recent years have stressed the importance of swash processes in terms of science advancement and practical applications in this field of study. Clearly, the hydrodynamics of the swash zone are complex and not fully understood. The hydrodynamics of the swash zone characteristics likes swash water depth and velocity will affected the sediment transport mechanisms that mostly control beach face morphology especially under dry and wet periods in east coast region of Peninsular Malaysia. Field monitoring works at Desaru beach for data of rainfall distribution, morphological changes and swash characteristics likes flow depths and velocities have been conducted and analysed for both different periods (dry and wet). From observation, it is believed that rainfall distribution during the seasonal variation of dry and wet seasons in Malaysia affects the swash characteristics mainly by the infiltration processes in beach areas and significantly controlled the morphological changes in the swash zone.