Appendix A. Structural change of continuous modes

The structures of the continuous modes for log E=-0.20 are described in section 3.3. In this section, results for various values of E are presented in order to examine the structural change of continuous modes according to phase speed.

Case of log E=-0.90 (phase speed of north boundary Kelvin mode is 2.18)

An animation of structural change of continuous modes for log E=-0.90 is shown in figure A-1. Below is descriptions of horizontal structures of the continuous modes for various phase speed.

Figure A-1: Horizontal structure of a continuous mode for log E=-0.90, k=0.10 (left panel). The position of the mode in dispersion curves is indicated by a blue filled circle in the right panel. Click the figure to show animation of horizontal structures of continuous modes scanned at k=0.10. Symbols in the right panel are same as table 1.

Case of log E=-0.20 (phase speed of north boundary Kelvin mode is 3.74)

An animation of structural change of continuous modes for log E=-0.20 is shown in figure A-2. Structural change of the modes in this case is described in section 3.3.

Figure A-2: Same as figure A-1, but for log E=-0.20, k=0.10. A decay mode with k=0.10, c=3.65 is not included in the animation.

Case of log E=0.50 (phase speed of north boundary Kelvin mode is 4.44)

An animation of structural change of continuous modes for log E=0.50 is shown in figure A-3. Below is descriptions of horizontal structures of the continuous modes for various phase speed.

Figure A-3: Same as figure A-1, but for log E=0.50, k=0.10. A decay mode with k=0.10, c=2.77 is not included in the animation.

Case of log E=1.30 (phase speed of north boundary Kelvin mode is 4.78)

An animation of structural change of continuous modes for log E=1.30 is shown in figure A-4. Below is descriptions of horizontal structures of the continuous modes for various phase speed.

Figure A-4: Same as figure A-1, but for log E=1.30, k=0.10. A decay mode with k=0.10, c=2.09 is not included in the animation.

Appendix A. Structural change of continuous modes