 Solution

ID: past-exam-of-the-year-2-of-the-earth-sciences-geology-course-of-the-university-of-oxford/2023/paper-1/6/h/solution

For transmission into salt,

V_{P 3} = 4000 m s^{- 1}

, so

sin t_{P} = \frac{4000}{2000} sin 2 0^{\circ}, t_{P} = 43.1 6^{\circ} .

The transmitted P wave bends away from vertical because it enters a faster medium. The incident angle remains below the

3 0^{\circ}

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