A Practical Understanding of Pre- and Poststack Migrations: Poststack

3-D DMO 3-D migration 3-D prestack algorithm aliasing amplitude anisotropic applied Bancroft Cheops pyramid Claerbout computed constant offset section constant velocity Conv conventional DMO Converted-wave CREWES Research Report CSEG CSP gather defined diffraction dip filter Dip moveout dip-dependent NMO correction dipping event DMO curve DMO ellipse DMO-PSI EAGE energy Finite-Difference Fourier transform Gardner GDMO Geophys Geophysics Geophysics Exp Geophysics Geophysics Geophysics hyperbola hyperboloid illustrated in Figure imaging INMO input sample input trace inverse kinematic Kirchhoff migration Kirchhoff NMO linear method poststack migration prestack depth migration prestack migration ellipse prestack migration gather prestack time migration prestack volume Prosp Radon transform ray tracing raypaths receiver gathers reflection point RMS velocities scatter scatterpoint SEG Nat seismic data shows source and receiver source gather source record stacked section surface traveltime velocity model wave equation zero zero-offset