Abstract
Study of beach morphological changes during monsoon and development of capabilities towards its prediction is of vital importance in coastal zone management. A study of the beach erosion/accretion processes during south-west monsoon and its numerical modelling is attempted in this communication for a micro-tidal and high-energy beach. Comprehensive hydrodynamic and beach profile data measured in the field were used for the study. The beach morphological changes as a result of the high intensity monsoon waves are found to be characterized by erosion of beach coupled with deposition in the offshore leading to formation and migration offshore longshore bar. The model LITPROF of the LITPACK software of DHI is found to simulate well the beach morphological changes by adjustment of the calibration parameters. The integrated cross-shore transport computed across the profile, using the model shows high erosion in the beach face coupled with an equivalent accretion in the offshore. The model performance computed using different statistical methods is found to be good.