1. SAGE 2008 Vibroseis Videos Larry Braile braile@purdue.edu
Vibroseis courtesy of ION Geophysical
Larry Braile
Last modified: June, 2015
(videos 1, 14, 11, 13, 9; June 30, 2008)
Exploring Planet Earth

2. SAGE 2008 Budaghers Fault Profile
(video vid00001.wmv)

3. (video vid00014.wmv)

4. Vibe Controller (Pelton) – “Triggering the Sweep”
(video vid00011.wmv)
Vibe Controller (Pelton) – “Triggering the Sweep”

6.  Watch here and  here The “Pad” and the Sweep (schematic)
(video vid00013.wmv)
Time (10 s) 
The “Pad” and the
Sweep (schematic)
10 Hz
80 Hz

7. Figure 1. Vibroseis Schematic
After Lindseth, 1968

8. Figure 1. Vibroseis Schematic – Cross Correlation with pilot
Coefficient plotted at location of thin black line ()
Correlation coefficient is calculated at each time sample () to form seismogram
Crosscorrelation: shift, multiply and sum; repeat
After Lindseth, 1968

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

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

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

12. Last VP…
(video vid00009.wmv)

13. SAGE 2008 Vibroseis Videos Larry Braile
Vibroseis courtesy of ION Geophysical Also see:
Larry Braile
Last modified: June, 2015
(videos 1, 14, 11, 13, 9; June 30, 2008)
Exploring Planet Earth