A STUDY ON POSSIBILITY OF DESIGN WAVE CALCULATION USING JRA55

Abstract

 The design of port structures is calculated using probabilistic wave heights for return periods from long-term observed wave data. However, few locations have long-term observational data, and wave prediction results are often used. Due to the high computational cost of wave prediction, this study examined the potential for calculating probabilistic wave heights based on JRA-55wave, which uses JRA55 as external forcing with the WW3 model. The study utilized wave data from six NOWPHAS locations with long observation periods from 1980 to 2012. This study also evaluated the accuracy and bias when calculating probabilistic waves needed for design using JRA-55wave.