Figure 3
(a) Mean vertical profile of \(N(z)\) taken on July 20; (b, c) vertical mode solutions of vertical and horizontal velocities, respectively, \(\phi_n\) and \(\frac{\partial {\phi_n}}{\partial {z}}\) for \(n =\) 1, 2, 3, 4, and 5; the dispersion relation of internal waves for \(n =\) 1–5: (d) \(\omega\) vs. \(k_H\), and (e) \(Cg_H\) vs. \(k_H\). In (a), vertical dashed line shows the vertical mean of \(N(z)\). In (d) and (e), \(k_H^C\) and \(k_H^M\) denote horizontal wavenumbers associated with the cyclone-wave resonance (680 km in wavelength) and the quasi-geostrophic disturbances (100 km). In (d), a hatched region shows the range of observed wave frequency. In (e), a gray horizontal strip shows the fastest group velocity for \(k_H^C\) and \(k_H^M\).
