During a minor earthquake a resident feels a sharp jolt followed later by a stronger
PHYSICS · Subjective · Fermi University Physics · Oscillations, Waves & Acoustics · Fluids & Continuum Physics · Wave motion, the wave equation and wave energy
Bending, Ringing, Breaking and Flowing, Ch Elastic waves in a solid and at its surface
Problem
During a minor earthquake a resident feels a sharp jolt followed 9.5s later by a stronger, more rolling motion. Model the crust between the resident and the source as a uniform Poisson solid with longitudinal wave speed cL=6.0kms−1 and shear speed cT=cL/3, and assume the two waves travel the same straight path from the hypocentre to the resident. Estimate that distance.