P wave and S wave Seismic velocity

[Caeser]

Homework Statement

I need to calculate the P wave velocity (VP[mantle]) and S wave velocity (VS[mantle]) in the mantle just above the core-mantle boundary?

All the data is found in the diagram. I know the equation to find compressional wave (P waves) velocity but you need to find the elasticity modulus for bulk and shear, and apparently you don't need to find these there is a simpler way

 

[gneill]

Hi Caeser. I'm not sure what it is you need to calculate since the diagram provides the velocities by inspection. The horizontal axis is velocity (km/s). The vertical axis is depth (km). The mantle/core boundary is given.

 

[aidinxo]

did you find the answer?