Directional waves simulated for a severe cyclone and a typical monsoon season in the north Indian Ocean

Abstract

A second generation wave model has been used to simulate waves generated in the north Indian Ocean during (1) an exceptional severe cyclone which occurred in November 1977 and (2) a typical monsoon month of July 1987. The model has been formulated in terms of source functions using the basic energy balance equation. The cyclone waves are simulated over an area of 1000 km sup(2) which includes the location (off Pondicherry), where wave data is available for comparison. The wind input to the model is derived from the isobars using a storm model. The ECMWF analysed winds of July 1987 are used to simulate the monsoon waves. The model results have been found close to the observed wave parameters