Interaction of Solitary Internal Waves of Finite Amplitude

Pelinovsky E., Shurgalina E.

The study of the interaction of unidirectional single-mode solitary internal waves in a stratified ocean is performed. The exact two-soliton solution of the Korteweg – de Vries equation is used for the analysis. The role of this process in the dynamics of soliton turbulence is discussed. It is shown that during the interaction the third and fourth moments of the wave field, which play an important role in the theory of turbulence (skewness and kurtosis), decrease. The results are compared with the linear dynamics of soliton-like pulses, for which the third and fourth moments increase during collision.

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