Effect of dynamic melting on acoustic velocities in a partially molten peridotite

- The dynamics of partial melting results in the softening of bulk and shear moduli.
- Experimental measurement of long period Young's modulus drastically reduced in partial melting region.
- Model from thermodynamics of this melting region predict similar softening for dynamic melting.
- In the Earth's mantle, the origin of the low velocity zone must consider this effect.