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

Now reset the incident medium to sandstone; the new incident P wave has $p=\sin 20^{\circ }/2000$. Its reflected S wave hasThe equal result to part (d) follows from the equal ratio $V_S/V_P=0.6$ in the two incident layers.