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Converted Wave Triplications in Transversely Isotropic Media with a Tilted Symmetry Axis
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, 82nd EAGE Annual Conference & Exhibition, Oct 2021, Volume 2021, p.1 - 5
Abstract
In seismic data processing, serious problems could be caused by the existence of triplication and need to be treated properly for tomography and other inversion methods. In order to analyze the triplication for the converted wave in the TTI model, we examine the traveltime of the triplication from the curvature of averaged P and S wave slowness. Three models are defined and tested in the numerical examples to illustrate the behavior of the TTI model for the triplicated traveltime with the change of the rotation angle. Since the orientation of an interface is related to the orientation of the symmetry axis, the triplicated traveltime is encountered for the converted wave in the TTI model assuming interfaces to be planar and horizontal. The triplicated region is influenced by the place and level of the concave curvature of the P and S wave slowness.