Application to Marmousi model

We applied the same method to the Marmousi model. Figure 9 shows a Kirchhoff migrated stack of the Marmousi data. The right panel of Figure 10 shows the offset-domain CIG taken from the surface location at 6336 meters. The left panel shows angle-domain CIG for the same surface location obtained by the wave-equation migration method described earlier. Although the angle-domain panel has more artifacts, it has better quality results. The angle-domain CIG contains higher frequencies. The reflectors at depths 1800 and 2500 meters are stronger and more continuous. The artifacts are caused by difficulties in the sampling and stack out of the image (Figure 11).

 

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Figure 9 Kirchhoff migrated stack

 

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Figure 10 Left: angle-domain CIG. Right: offset-domain CIG. Both are from surface location 6336 meters.

 

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Figure 11 Wave-equation migrated stack