Dynamical Analysis and Exact Solutions of a New (2+1)-Dimensional Generalized Boussinesq Model Equation for Nonlinear Rossby Waves
*
Quan-Sheng Liu,Zai-Yun Zhang,Rui-Gang Zhang,Chuang-Xia Huang
Fig. 6
Homoclinc orbits when $0<-g<g_{0}$.