Abstract
Reverse time migration (RTM) is well suited for imaging steep dips in areas with high velocity contrast. In order to image steep dips at the correct positions, anisotropy has to be taken into account. In most cases, we can assume the symmetry axis is normal to the bedding, and model is tilted transverse isotropy or TTI. Figure 1 compares TTI Kirchhoff migration and TTI RTM images. We can see that the turning wave helps RTM image the steep salt flank and the steep dip truncations against the base of the salt.
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