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Medium effects on waves Reflection/refraction

Medium effects on waves Reflection/refraction. When a wave encounters an interface between two layers, part of its energy is reflected back. The other part is refracted (transmitted) into the other medium. Snell’s law governs reflection and refraction angles. S r. P r. P i. f r. q i. q r.

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Medium effects on waves Reflection/refraction

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  1. Medium effects on wavesReflection/refraction • When a wave encounters an interface between two layers, part of its energy is reflected back. • The other part is refracted (transmitted) into the other medium. • Snell’s law governs reflection and refraction angles.

  2. Sr Pr Pi fr qi qr a1, b1 a2, b2 qt ft Pt St Sinqi Sinqr Sinqt Sinfr Sinft a1 a1 a2 b1 b2 Medium effects on wavesSnell’s law

  3. Medium effects on wavesDiffraction • occurs when wave encounters sharp discontinuities in the medium • important in defining faults • generally considered as noise in seismic sections • seismic migration usually corrects for this effect

  4. X Earth model Z X Seismic Section T Medium effects on wavesDiffraction

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