Application of the four models of directional spectra in the Bohai Sea

According to the wind-wave individual case directional spectra obtained from the instrument array and ‘956’ wave buoy measures, the wind-wave directional spectra presented by Mitsuyasu, Donelan and Hasselmann on the basis of the observations as well as theoretical wind-wave directional spectra by Wen Shengchang on the basis of analytic method are compared and checked from the pointview of total energy.Results show that Mitsuyasu's directional spectra are well identical with the measured wind-wave directional spectra developing fully in the Bohai Sea.Donelan's and theoretical wind-wave directional spectra are also quite consistent with the measured results in the development of the wind waves, especially best with the measured results in the initial stage of the development of the wind waves.