Design of wave spectrum in the Java Sea

Abstract

Information about wave characteristics plays a crucial role in the design of coastal and offshore infrastructure. This information is necessary to establish safety parameters for structures located offshore. Key parameters of interest include significant wave height and wave period, which are typically described through a wave spectrum. The creation of this wave spectrum involves using the fast Fourier transform, which converts the time domain into the frequency domain. The JONSWAP method describes how wave energy is distributed in the wave spectrum based on specific parameters, such as wind speed, duration of the wind, and the prevailing wave conditions. This method attempts to account for changes in the wave spectrum that occur when the wind blows at different intensities. As a result, the JONSWAP method allows for the generation of more realistic wave spectra under various weather conditions. From this energy spectrum, the JONSWAP shape will be sought to closely match the energy spectrum.