Wavefield Seismic Imaging tutorial: ``exploding reflector'' modeling/migration |

exprefwidth=The exploding reflector model (after Clærbout (1985)).

Acoustic modeling and migration can be implemented using numeric solutions to an acoustic wave-equation, for example a variable-density wave-equation:

In Equation 1, represents the acoustic wavefield, and represent the velocity and density of the medium, respectively, and represents a source function.

- In
**modeling**, we use the distributed source to generate the wavefield at all positions and all times by wave propagation forward in time. The data represent a subset of the wavefield observed at receivers distributed in the medium:(2)

- In migration, we use the observed data
to
generate the wavefield
at all positions and all times by
wave propagation backward in time. The image represents a subset of
the wavefield at time zero:
(3)

Wavefield Seismic Imaging tutorial: ``exploding reflector'' modeling/migration |

2014-04-15