Wave refraction and prediction of breaker parameters along the Kerala coast, India

Abstract

Numerical wave refraction study for the Kerala coast has been carried out for waves representing southwest monsoon (June - September), northeast monsoon (October - February) and fair weather period (February - May). Distribution of wave heights vary significantly from place to place due to wave refraction and shoaling. The convergence and divergence of wave energy induce non-uniform distribution of wave heights during the monsoon period. Ezhimala promontory causes waves to refract considerably along the coastline of Cannanore, Badagara and Mahe during October to February, whereas the headland at Thankasseri induces divergence of wave energy along Quilon and Varkallai. Vypin experiences convergence of wave energy almost throughout the year.