812120.fig.002a
(a)
812120.fig.002b
(b)
812120.fig.002c
(c)
812120.fig.002d
(d)
Figure 2: Four low-kink waves are bifurcated from four symmetric solitary waves. The varying process for the figures of and when , , , and , where , , and (a) , (b) , (c) , and (d) .