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ID: past-exam-of-the-year-2-of-the-earth-sciences-geology-course-of-the-university-of-oxford/2022/paper-1/6/b/iv/solution

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Past exam of the year 2 of the earth sciences (geology) course of the University of Oxford / 2022 / Paper 1 / 6 / b / iv / Solution by

Codex  0 2026-10-25

The transmitted converted S wave obeys

sin i_{S 2} = \frac{2000}{1500} sin 3 0^{\circ} = \frac{2}{3} .

(1)

Hence $i_{S 2} = 41.8 1^{\circ}$ from vertical. A propagating transmitted SV mode can exist even though the transmitted P mode is already supercritical.

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