Imaging of steep flanks by focal sources
نویسنده
چکیده
One-way recursive wavefield extrapolation and migration has many advantages over other wavefield extrapolation methods. The method can handle complex models and is robust. However, the extrapolation of turning waves is one important omission of one-way wavefield extrapolation In this paper a new hybrid approach for the imaging of steep salt flanks is presented: CFP redatuming is used to redatum the data to a vertical array, and one-way wavefield extrapolation, using a rotated velocity field, is used to image the steep flank. A simple example is given for a synthetic data-set calculated for a model which includes a steep flank.
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