Observations of Nonlinear Processes in Surface Wave Generation
Arguments are presented that suggest the possible existence of an air-sea interaction soliton, that is a wave group of permanent type envelope, of a significant half-life, and which consist of coupled disturbances in the air and water velocity fields It is argued that instabilities are modulationally unstable, and thus, to a linear approximation, favor the generation of groups. The phase between wind and sea surface disturbances for a disturbance of permanent type is shown to be consistent with observations. Other experimental evidence is cited in support of the interaction soliton. The possible usefulness of such a description of wind generation is also discussed.
KeywordsModulational Instability Wave Group Stokes Wave Surface Wave Generation Interaction Soliton
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