Power spectrum of the pressure perturbation for case 10, averaged over the depth range used for the SVD. The power was smoothed to reduce the effect of the stochastic excitation. The large peaks at 1856 μHz, 2812 μHz, and 3858 μHz represent the modes with n = 0, 1, and 2, respectively, where n is the number of nodes in the displacement eigenfunction. The n = 3 peak around 5000 μHz is not analyzed further, as it is very close to the acoustic cutoff frequency. The small peaks around 2100 μHz and 2300 μHz are leaks from modes with k_h ≠ 0.