Fig. 4

The relationship of dispersion between wave and frequency given that a \(R=10,~q=-2.5,~\sigma =1\). b \(R=10,~q=0.65,~\sigma =-2\).

The relationship of dispersion between wave and frequency given that a \(R=10,~q=-2.5,~\sigma =1\). b \(R=10,~q=0.65,~\sigma =-2\).