f The Generation of Pseudo VSP Data from Land Data

In this paper we present the transformation of land data into Pseudo VSP data. The pseudo VSP generation technique has proven to be very useful in the interpretation of seismic data, since it illustrates the propagation of waves through the earth in depth as well as time (Alá'i and Wapenaar, 1994). The nucleus of pseudo VSP generation is downward extrapolation of a wave field from the surface into the subsurface. The pseudo VSP generation technique requires a macro model of the subsurface.