English: Kelvin wake simulation for Gaussian distortion (shown besides the wake) at Froude number 0.5.
Specifically, given that the Fourier transform of the distortion field is ~exp(-(k/k_0)^2/2), the distortion travels at half the speed of waves with wave vector k s.t. |k|=k_0 (in original size, the corresponding wavelength is 80 pixels).
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