1. As a second step, the present method comprises superposing an alternating signal on the direct current.

2. The amplitude of the effective fluctuations superposing the mean flow is larger over the slope than over the shelf.

3. The acoustic pressure and acoustic power of the whole structure are obtained by superposing those of each infinitesimal element.

4. The method includes a step of superposing a spatial index onto the set of difference points, and generating polygon vertices from a plurality of adjacent elements of index.

5. Cylindrical coordinates are a generalization of two-dimensional polar coordinates to three dimensions by superposing a height () axis. Unfortunately, there are a number of different notations used for the other two coordinates