This Python script is implemented as a trace processor inside INTViewer. In this case, we define the variable "time" and then populate trace samples with a function of time. More complicated velocity models are possible using additional dimensions.

This display shows two layers:

1) the original seismic reflection volume in black and white

2) the calculated velocity model superimposed using transparent rainbow color bar.

We can modify the script and update the display on the fly. Also, we can output the calculated velocity volume as a SEG-Y or SU file.