二成分合成波の非線形干渉に関する研究

抄録

In this paper, the 3rd-order theory of the two components composite wave in the uniform depth is developed with considering the higher order modulation of wave frequency, and the nonlinear interaction of the wave is theoretically and experimantally discussed. As the relative depth is smaller, the wave steepness is larger, and the ratio of wavelengths of two fundamental waves in two components composite wave, n, becomes near 1, the nonlinearity is stronger. In particular, when n becomes near 1 like as 0.8 and the relative depth is larger, the bound waves with angular freqencies 2σ1-σ2 and 2σ2-σ1 (σ1 and σ2 are the angular frequencies of the fundamental waves) considered by 3rd-order wave theory cannot be ignored.