Computation of synthetic seismograms with the reflectivity method
and comparison with observations
Geophysical Journal of the Royal Astronomical Society, 23 (4):
417--433 (September 1971)DOI: 10.1111/j.1365-246X.1971.tb01834.x
Abstract
The reflectivity method for the computation of synthetic seismograms,
as devised by Fuchs, is extended to include the elastic transmission
losses and time shifts due to a stack of layers on top of the reflecting
medium. Numerical details of this method are described, and a comparison
with the ray-theoretical method, as devised by Müller, is given.
The results of both methods agree well if the models are not too
complicated. The field of application of these methods is the comparison
with observed seismograms obtained from refraction studies of the
Earth's crust and upper mantle. The reflectivity method is applied
to the interpretation of observations along a profile in Central
Europe. The compressional velocity of the lower crust beneath this
profile increases gradually without showing a pronounced structure.
At the Mohorov010Di0107 discontinuity whose depth is about 27 km
the velocity increases from 6.8 to 8.0 km s-1. The zone immediately
below the Moho is homogeneous, followed by an increase in velocity
to 8.15 km s-1 at a depth of about 35 km.