result1.gif (3550 ???) Visualization and WKB analysis of the internal gravity wave in the QBO experiment ????-????????? ??-??????2

We performed the experiments with several different wave amplitudes and frequencies. The parameters are shown in Figure 4. The Brünt-Väisärä frequency in these experiment is 1.4(s-1).

When the amplitude of the wave is small, mean flow does not occur and the wave only propagates downwards. Animation 1 shows a typical movement of fluid visualized with floaters in the case of no mean flow. Since the floaters that are located far from the wave source move with small amplitudes, it is obvious that the waves are weakened during propagation.

charts.gif (2476 ???)Figure 4 Results

Animation 1 Wave with no flow (x30 speed)