Exploring Planet Earth

Larry Brailebraile@purdue.eduhttp://web.ics.purdue/~braile(videos 1, 14, 11, 13, 9; June 30, 2008)

SAGE 2008Vibroseis Videos

Vibroseis courtesy of ION Geophysical

SAGE 2008 Budaghers Fault Profile

Vibe Controller (Pelton) – “Triggering the Sweep”

The “Pad” and the Sweep (schematic)

Time (10 s)

10 Hz 80 Hz

Watch here

and

here

After Lindseth, 1968

Figure 1. Vibroseis Schematic

After Lindseth, 1968

Figure 1. Vibroseis Schematic – Cross Correlation with pilot

After Lindseth, 1968

Figure 1. Vibroseis Schematic – Cross Correlation, 1st Reflection

Maximum positive correlation at this position

After Lindseth, 1968

Figure 1. Vibroseis Schematic – Cross Correlation, 2nd Reflection

Maximum negative correlation at this position

After Lindseth, 1968

Figure 1. Vibroseis Schematic – Cross Correlation, 3rd Reflection

Maximum positive correlation at this position