L13_WavesAndRaysII-page4

L13_WavesAndRaysII-page4 - Then correct (shift traces) and...

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Applied Geophysics – Waves and rays - II Normal move out (NMO) Arrival time curve is quadratic 2 1 2 2 0 2 V x T T x + = So, if plot T 2 vs. x 2 we can determine the V 1 and h 1 from the slope and intercept The importance of NMO • Having determined the layer velocity, we can use the predicted quadratic shape to identify reflectors
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Unformatted text preview: Then correct (shift traces) and stack to enhance signal to noise 2 1 2 2 V T x T T T x NMO = Applied Geophysics Waves and rays - II Multiple layers Use Snells Law to trace ray paths p V r V i P P P P = = 2 1 sin sin At each interface...
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