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Seismic Refraction Vertical Geophones Source (Plate) Rock: V ASTM D 5777 Soil: V p1 oscilloscope x1 x2 x3 x4 t1 t2 t3 t4 Note: V p1 < V p2 z R Determine depth to rock layer, z R

Seismic Refraction

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Seismic Refraction

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  • Seismic RefractionRock: Vp2ASTM D 5777Soil: Vp1oscilloscopeNote: Vp1 < Vp2

  • Seismic RefractionDepth to Rock: zc = 5.65 mx valuest values