# Difference between revisions of "Dictionary:Reverse time migration"

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Backward propagation of the wavefield in time. Often uses a finite-difference approximation to the wave equation. Time samples from a seismic section are used as the surface boundary condition for a wave-equation extrapolator and successive time samples are used until the surface is reached, when the image is completed. See McMechan (1983). | Backward propagation of the wavefield in time. Often uses a finite-difference approximation to the wave equation. Time samples from a seismic section are used as the surface boundary condition for a wave-equation extrapolator and successive time samples are used until the surface is reached, when the image is completed. See McMechan (1983). | ||

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## Latest revision as of 15:10, 27 July 2017

Backward propagation of the wavefield in time. Often uses a finite-difference approximation to the wave equation. Time samples from a seismic section are used as the surface boundary condition for a wave-equation extrapolator and successive time samples are used until the surface is reached, when the image is completed. See McMechan (1983).