3-D Prestack-migration of Wide-angle Data from a Variscan Transition Zone

In addition to the near normal-incidence observations within the German DEKORP 2 project in 1984, wide-angle observations have been carried out on a parallel profile across the boundary between the Saxothuringian and Moldanubian crust, approximately 50 km NE of the main transect to control three-dimensional variations. Explosion sources have been used for the entire survey, providing excellent conditions for wide-angle registrations. A velocity model has been derived on the basis of in- and off-line refraction measurements using a kinematic raytracer which was extended to three dimensions by interpolation of 2-D velocity fields between parallel sections. Although prestack-migration of the data led to aliasing effects due to large shot and geophone spacing, stable results were obtained by forming envelopes after single-shot migration. The migrated sections reveal a strongly reflective Moho at about 31 km depth and a steeply (50 degrees) dipping intracrustal reflector, which seems to be related to the border between the two Variscan units.

@article{id200,
  author = {Bleibinhaus, F. and Bopp, M. and Simon, M. and Gebrande, H.},
  doi = {10.1007/s000240050295},
  journal = {Pure and Applied Geophysics},
  language = {en},
  number = {1-2},
  pages = {173-186},
  title = {3-D Prestack-migration of Wide-angle Data from a Variscan Transition Zone},
  volume = {156},
  year = {1999},
}

%O Journal Article
%A Bleibinhaus, F.
%A Bopp, M.
%A Simon, M.
%A Gebrande, H.
%R 10.1007/s000240050295
%J Pure and Applied Geophysics
%G en
%N 1-2
%P 173-186
%T 3-D Prestack-migration of Wide-angle Data from a Variscan Transition Zone
%V 156
%D 1999