• In the case of the correct anisotropy and heterogeneity the migrated interface in the final stacked image coincides nearly perfectly with the interface in the model used to compute the recorded wave field.

• In the case of the correct anisotropy and incorrect heterogeneity, the migrated interface coincides with the original interface at the depth where we have fitted elastic moduli. Other parts of the migrated interface are mispositioned. We did not observe significant distortion and defocusing.

• Finally, in the case of the incorrect anisotropies and incorrect heterogeneity, we observed mispositioning, distortion and defocusing of the migrated interface.

• Comparing selected migrated sections calculated in this paper and in Bucha (2012a), we can approximately separate the influence of the incorrect anisotropy and the incorrect heterogeneity.
  It is obvious, that the simple heterogeneity increases the errors of the migrated interface.
  We may expect the errors in migrated images of real structures, caused by the incorrect anisotropy and the incorrect heterogeneity, to be very difficult to distinguish.

• The author thanks Ludek Klimes and Ivan Psencik for help throughout the work on this paper.

The research has been supported by

• the members of the consortium Seismic Waves in Complex 3-D Structures

• the Grant Agency of the Czech Republic under Contract P210/10/0736

• the Ministry of Education of the Czech Republic within Research Projects MSM0021620860 and CzechGeo/EPOS