Figure 7: Velocity surfaces of pPv-MgSiO₃ at 125 GPa and 2,500 K.

Blue lines are used to specify theoretical results similar to Fig. 2a,b. The upper line is the P-wave velocity and the lower lines are the S-wave velocities. Open circles ‘o’ and crosses ‘+’ for V_S specify in-plane and out-of-plane particle motions.