GROUPING WAVES AND THEIR EXPRESSING ON ASYMPTOTIC ENVELOPE SOLITON MODES

T. Yasuda, N. Nakashima, Y. Tsuchiya

Abstract


An approach, that treats natural sea states with remarkable groupiness as random sequences of envelope solitons, is suggested here to explain their dynamical and statistical properties from the viewpoint that wave packets contained in the states have their own characteristics and should be regarded as elementary modes. Some examinations are made on its applicability to the temporally observed waves. And the approach is shown to be effective also for waves with a non-zero nonlinearity and finite spectral band-width. Further, a formulation based on envelope solitons is made on the wave drifting force and is shown to be useful for analyzing the time series of drifting forces.

Keywords


wave group; asymptotic envelope soliton modes

Full Text: PDF

Creative Commons License
This work is licensed under a Creative Commons Attribution 3.0 License.