Poisson's ratio of a rock can be calculated from the ratio of P-wave (Vp) to S-wave (Vs) velocities using the elastic relation involving r = Vp/Vs.
With Vp = 6.0 km/s and Vs = 4.0 km/s, r = Vp/Vs = 1.5, so r² = 2.25. Poisson's ratio σ = (r² -...
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