(a) Normalized sound speed time–distance plot shows that as the nonlinear effects take place, the sound speed, and from Equation (14) temperature, increase upstream of the shock. Panel (b) shows the sound speed variation for z = 0.3 and panel (c) provides the variations for z = 0.99.
(An animation of this figure is available.)
The video/animation of this figure is available in the online journal.