This poster reviews various implementation issues that must be addressed in wave-equation-based, prestack, shot record migration, in order to accurately recover prestack amplitudes. The discussion is divided into four key topics:

Ray theory represents a high-frequency approximation for one-way wave propagation and is adequate for simple-to-moderate earth structures. One example is prestack Kirchhoff depth migration using minimum-time or maximum energy arrivals and ray theory-based amplitude compensation. Ray theory methods fail below complex structures, due to “multi-pathing” and low-frequency diffraction effects.

A “perfect” treatment of amplitude in heterogeneous media requires wave-theoretical, two-way methods. Unfortunately, the benefits of two-way wave theory for...

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