Abstract:
The description of nonlinear characteristics of sea surface waves by models based on the
Stokes expansion is discussed. The limitations of existing models are noted, which do not allow describing the variety of wave forms present on the sea surface. The necessity of
introducing an additional parameter is justified. A modified second-order nonlinear
model is proposed that allows obtaining negative values of the skewness, which are
observed in field experiments but are not described by existing models. The proposed
model also allows to obtain horizontal asymmetry of waves.
Keywords:sea surface, distribution of surface elevations, skewness, second-order nonlinear model.
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