EOM hyperbolae

John C. Bancroft

The equivalent offset method of migration is a prestack migration that spreads energy from one input time sample to all the neighbouring gathers. In a time migration the energy is spread along a hyperbolic path in a constant time plane defined by the input sample. This path is referred to as the EOM hyperbola. Moveout correction of this hyperbola creates the prestack migration ellipse. Properties of the EOM hyperbola are displayed relative to the prestack migration ellipse to evaluate the extent of the EO hyperbola, and to establish an ad hoc method for applying amplitude scaling. Comparisons of EOM with conventional prestack time migration are provided.