CONCLUSION

The efficient implementation of the Kirchhoff datuming algorithm on a parallel computer makes wave equation datuming a feasible alternative to conventional static shift. In regions of large topographic relief, the subsurface velocity structure is difficult to determine; therefore it may not always be possible to continue the data to some lower datum directly. With the fast and efficient wave equation datuming algorithm presented here, it is possible to estimate near surface velocity structure iteratively. The datuming algorithm can also be used to continue data upwards and perform wave equation based processing at a flat datum.