Buch, Deutsch, 131 Seiten, Format (B × H): 145 mm x 210 mm
Buch, Deutsch, 131 Seiten, Format (B × H): 145 mm x 210 mm
ISBN: 978-3-8325-0010-8
Verlag: Logos
Kirchhoff depth migration is an imaging process that transforms reflection seismic data measured at the surface into the depth domain in order to obtain a structural image of the subsurface. Mathematically, it is related to the Kirchhoff integral representation of the scalar acoustic wave equation and, hence, originally only suitable for imaging of compressional (P) waves. In this thesis, the scalar approach to Kirchhoff imaging is extended to handle the full elastic wavefield recorded with multicomponent receivers by considering the polarization of respective wave modes scattered at an interface. In order to relate the resulting amplitude of the migrated image to a physical property (in this case the interface reflectivity), a weight has to be applied during migration. These weight functions change for each scattering mode in the case of elastic multicomponent migration. It is shown, that the method allows to retrieve the full elastic scattering matrix of target reflectors.