CONCLUSIONS

I implemented an anti-aliasing method for Kirchhoff migration operators, based on local triangle filtering. The N-point triangles are efficiently applied as 3-point filters after causal and acausal integration of the seismic trace data. This method is well suited for parallel processing algorithms, where storage of multiple copies of various high-cut filtered versions of the input data is not often practical. I compare the anti-aliasing method to a standard Kirchhoff 3-D migration, using a salt intrusion data set from the Gulf of Mexico. Preliminary results indicate that careful anti-aliasing can enhance steep-dip reflections from faults and salt-sediment interfaces during the process of 3-D seismic migration imaging.