Past exam of the year 2 of the earth sciences (geology) course of the University of Oxford / 2023 / Paper 1 / 6 / m / Solution

S-wave seismic impedance is $Z_S=\rho V_S$. With $V_{S3}=3000\mathrm{m}{\mathrm{s}}^{-1}$ as documented in part (i),Unlike the P-wave case, the reservoir base has a nonzero S-wave seismic impedance contrast.