Fig. 11.

Simulation for $\kappa =5\times {10}^{-6}$ (i), $\kappa =2\times {10}^{-6}$ (ii), $\kappa ={10}^{-6}$ (iii), and $\kappa =5\times {10}^{-7}$ (iv). The arrow points in the direction of increasing values of κ.