1. Exploring Planet Earth Larry Braile braile@purdue.edu http://web.ics.purdue/~braile (videos 1, 14, 11, 13, 9; June 30, 2008) SAGE 2008 Vibroseis Videos Vibroseis courtesy of ION Geophysical

2. SAGE 2008 Budaghers Fault Profile

4. Vibe Controller (Pelton) – “Triggering the Sweep”

6. The “Pad” and the Sweep (schematic) Time (10 s)  10 Hz 80 Hz  Watch here and  here

7. After Lindseth, 1968 Figure 1. Vibroseis Schematic

8. After Lindseth, 1968 Figure 1. Vibroseis Schematic – Cross Correlation with pilot

9. After Lindseth, 1968 Figure 1. Vibroseis Schematic – Cross Correlation, 1st Reflection Maximum positive correlation at this position

10. After Lindseth, 1968 Figure 1. Vibroseis Schematic – Cross Correlation, 2nd Reflection Maximum negative correlation at this position

11. After Lindseth, 1968 Figure 1. Vibroseis Schematic – Cross Correlation, 3rd Reflection Maximum positive correlation at this position