Wave mode separation and prestack depth migration of multicomponent data in the presence of topography

Saul E. Guevara and Gary F. Margrave

ABSTRACT

Scalar methods for multicomponent data processing require in principle separate wave modes. A method for wave mode separation in the presence of topography is proposed and tested on synthetic seismic data, generated over a complex geology model with a 2D elastic FD method. The resulting data are migrated using two pre-SDM approaches, Kirchoff and PSPI, which also take into account the rough topography. The seismic images obtained show the challenging characteristics of these data; the methods provide insights into approaches that can be rewarding for elastic wave processing in complex settings.

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