visual1.gif (3664 ???) Visualization and WKB analysis of the internal gravity wave in the QBO experiment ???? ????-?????????

Two kinds of visualization methods were used in this experiment.

The first method uses floaters to visualize the movement of water as in Plumb & McEvan. Because the working fluid is a continuously stratified salt water, a floater will halt at the level with equal density as itself. Therefore, the movement of water can be visualized by putting the floaters with various densities in the fluid.

In this experiment, the flow pattern is recorded with a video camera, and the velocity of the mean flow is measured on a video monitor with a scale.

float.gif (116364 ???)

Figure 2 Floaters resting at the equal-density level