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| Isotropic angle-domain elastic reverse-time migration | |
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For imaging with vector wavefields, the extended
imaging condition from equation can be applied directly to the various
components of the reconstructed source and receiver wavefields,
similar to the conventional imaging procedure
described in the preceding section. Therefore, an extended image
constructed from vector displacement wavefields is
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(9) |
where the quantities and stand for the Cartesian
components of the vector source and receiver wavefields, and
and stand for cross-correlation lags in space and time,
respectively. This imaging condition suffers from the same drawbacks
described for the similar conventional imaging condition applied to
the Cartesian components of the reconstructed wavefields,
i.e. crosstalk between the unseparated wave modes.
2013-08-29