Fig. 11.

Space-time plots of bumps for a Gaussian threshold distribution. Simulations of (3) using as initial conditions the two different solutions shown in Fig. 10. Top: stable; bottom: unstable. Parameter values are $\kappa =1$, $ϵ=0.01$, $\sigma =1$, $\alpha =5$, $B=0.76$, $\beta =3$ and $h_0=0.05$