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L20_SeismicRefractionIII-page5

L20_SeismicRefractionIII-page5 - or reduced depth(Data also...

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Applied Geophysics – Refraction III Rockhead determination for waste disposal site Example Phantoming • Used to generate a refraction arrival time much longer that it is possible to collect • Could be used to determine intercept, or • In preparation for reciprocal method Near-constant velocity refractor Increased velocity
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Unformatted text preview: or reduced depth? (Data also interpolated between each geophone to increase range of possible XY distances) Applied Geophysics – Refraction III Rockhead determination for waste disposal site Example Velocity analysis: • T V calculated for a range of XY values • Optimal XY: 0 feet (The smoothest curve) T V...
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