Translations:Phase-shift migration/10/en

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Gazdag and Squazzero [1] extended the phase-shift method to handle lateral velocity variations. To achieve this, first the input wavefield is extrapolated by the phase-shift method using a multiple number of laterally constant velocity functions and a series of reference wavefields are created. The imaged wavefield then is computed by interpolation from the reference wave-fields. This migration method is known as phase-shift-plus-interpolation. An alternative extension of phase-shift migration to handle lateral velocity variations is presented by Kosloff and Kessler (1987).

  1. Gazdag and Squazzero (1984), Gazdag, J. and Squazzero, P., 1984, Migration of seismic data by phase shift plus interpolation: Geophysics, 49, 124–131.