Observed typhoon wave spectrum in northern South China Sea

To describe both the way in which a wave spectrum grows and the growth processes of realistic wave conditions, the dependence relationship between the spectrum parameters and wind parameters must be obtained. Based on data measured in 2010 by a Wave Rider buoy, which was deployed in the South China Sea at coordinates 21.89A degrees N, 115.13A degrees E, we evaluated the wave spectrum in the sea area when affected by three typhoons: Conson, Chanthu, and Megi. The Joint North Sea Wave Project spectrum was parameterized based on the observed wave spectrum. We proposed a spectrum with three parameters: the dimensionless lowest moment of the spectrum, dimensionless peak frequency, and spectrum width. The relationships between these spectral parameters and the dimensionless fetch were also discussed.