Kirchhoff prestack depth scalar migration of complete wave field in a simple inhomogeneous weakly anisotropic velocity model: preliminary tests

Vaclav Bucha

Summary

We use 3-D ray-based Kirchhoff prestack depth scalar migration to calculate migrated sections in a simple inhomogeneous weakly anisotropic velocity model. The complete seismic wave field is calculated using the Fourier pseudospectral method. Velocity model is composed of two layers separated by a curved interface. The upper layer is inhomogeneous weakly anisotropic and the bottom layer is isotropic. We apply 3-D Kirchhoff prestack depth scalar migration to single-layer velocity model with the same weak anisotropy as in the upper layer of the velocity model used to calculate the recorded wave field. We show and discuss the first results of the migration for complete wave field.

Keywords

Fourier pseudospectral method, 3-D Kirchhoff prestack depth scalar migration, anisotropic velocity model, weak anisotropy, complete wave field

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Seismic Waves in Complex 3-D Structures, 28 (2018), 85-96 (ISSN 2336-3827, online at http://sw3d.cz).