Experimental study on strong interaction between regular waves and wind waves—I |
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Authors: | Mitsuhiko Hatori Masayuki Tokuda Yoshiaki Toba |
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Affiliation: | (1) Geophysical Institute, Faculty of Science, Tohoku University, 980 Sendai, Japan;(2) Present address: Institute of Coastal Oceanography, National Research Center for Disaster Prevention, 256 Hiratsuka, Japan |
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Abstract: | The interaction between mechanically generated regular waves and wind waves is experimentally investigated in a wind-wave tunnel. It is shown that the growth process of regular waves is divided into the four distinct stages as follows: (1) almost independent coexistence of wind waves and regular waves, (2) attenuation of wind waves with simultaneous growth of regular waves, (3) rapid growth of regular waves after disappearance of wind waves, and (4) transition of regular waves to wind waves after the wave breaking. At the second stage there is an apparent relation between the attenuation of wind waves and the growth of regular waves. This fact suggests that there is some strong nonlinear interactions which transfers energy effectively from wind waves to regular waves. |
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