Data Driven Extraction of Snell Traces
, by Rick Ottolini
A Snell trace is the set of data on a gather or profile with the same time slope. A Snell trace can be modeled using an a priori velocity function or picked directly from the data aftering dip filter has been applied. A low artifact, velocity independent dip filter is based on Kostov and Biondi's beam stack. Snell trace extraction simultaneously picks velocity and amplitude as a function of offset angle.
STANFORD