480670.fig.002a
(a)
480670.fig.002b
(b)
Figure 2: (a) Amplitude versus speed bifurcation. There are two branches for each and bifurcate from the minimum of the phase speed. From left to right: . (b) Energy versus speed curves for different . The upper branches are for elevation solitary wave, and the lower branches are for depression ones. From left to right: , respectively.