Abstract
The wave characteristics in the nearshore waters of Sanmen Bay are presented based on the AWAC-measured data from October 2016 to September 2017 at the wave observation station with 7.5m water depth. The wave parameters and the wave spectral variations are statistically analyzed, and the wave height distribution, the wave period distribution, and the joint distribution of wave height and period are discussed. The results indicate that the measured distribution of wave height agrees well with the Weibull distribution. When the spectral width is small, the various theoretical distribution models of wave period have their own reference values for the study of the distribution of measured wave period. The measured distribution of wave period has the best agreement with the Weibull distribution when the spectral width is large. The Longuet-Higgins model (1983) and the Sunfu model can be fitted to the joint distribution of wave height and period in this sea area, but the fitting effect is poor. The dominant wave direction and the strong wave direction are both E, with a frequency value of 40.27%. The maximum wave height (Hmax) of 2.71m was observed during the observation period due to the influence of typhoon Talim.
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