Seismic Reflection 3: Acquisiton, Processing, and Waveform Analysis

1. Introduction to Geophysics Ali Oncel [email_address] Department of Earth Sciences KFUPM Seismic Reflection 3: Acquisiton, Processing, and Waveform Analysis Introduction to Geophysics-KFUPM

3. Average Velocity V av = average velocity above the interface Z= depth from the surface to the interface t= one-way travel from surface to interface Introduction to Geophysics-KFUPM

4. Root Mean Square (RMS) Velocity V RMS = root mean square velocity V i = seismic velocity of the i th layer t i = two-way travel time within the i th layer Introduction to Geophysics-KFUPM

5. Interval Velocity (V int ) For n=2 V 1 = Stacking velocity for reflection from upper interface [V RMS (1)] V 2 = Stacking velocity for reflection from lower interface [V RMS (2)] Dix, 1955 (p.130 of Sheriff and Geldart, 1995) V int = Δ Z/ Δ t V int = average velocity between two interfaces Δ Z= thickness of layer between the two interfaces Δ t= one-way travel time between the two interfaces Introduction to Geophysics-KFUPM

6. Introduction to Geophysics-KFUPM

7. Introduction to Geophysics-KFUPM

8. Introduction to Geophysics-KFUPM

9. Introduction to Geophysics-KFUPM

10. Mid-Term Exam May 3 Field-Trip April 26, 12.30 PM Introduction to Geophysics-KFUPM 12.10 AM- 13.00 AM We may recover two classes time