Study of the Perturbation of the Surface-Wave Height Spectrum due to a Sinusoidal Current Feature of Variable Wavelength and Phase Speed.
JOHNS HOPKINS UNIV LAUREL MD APPLIED PHYSICS LAB
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Closed form expressions for the perturbation of the surface-wave spectrum due to a weak sinusoidal current feature are developed from the general wave-current interaction equations. A parametric study is presented of the dependence of the perturbation on quantities such as the wavelength, phase speed, and propagation direction of the current feature, along with an estimate of the most strongly perturbed spectral component as a function of these parameters. The perturbation due to more complicated features may be obtained from the results presented in this work through Fourier expansion techniques. Keywords wave current interaction spectral perturbation action balance equation surface wave relaxation rate Synthetic Aperture Radar.
- Physical and Dynamic Oceanography
- Active and Passive Radar Detection and Equipment