7. Phase velocity Medium parameters
(scale lengths of layering, intrinsic P and/or S velocities, rigidity, etc.).
Geometric “fit” of a particular harmonic component into the associated boundary conditions.

8. Group velocity
Medium parameters through their influence on the phase velocity.
Variation of phase velocity with frequency, which controls the interference between different harmonics.

15. Density, Gravity, Pressure and Mass Distributions

16. Temperature in the Earth

20. 1998
1993

22. Density, Gravity, Pressure and Mass Distributions

23. Temperature in the Earth

24. High P and T Experiments

25. Phase Pransitions
Ringwoodite phase is about 10% denser than a-olivine

34. Phi = alpha2 – 4/3 beta2

36. Composition of the Core

37. Different Composition Between OC and IC

38. Phase Transition and Thickness of Discontinuities