Decay spectra and dT/dΔ on 13 great circle paths for P and seven for SH, are used in a joint
interpretation of P and SH diffraction data, in terms of a transition zone with linear velocity …

A comparison of observed decay spectra of diffracted P and SH waves, with theoretical results
for a standard (PEM-C) model, reveals characteristic differences between P and SH, and …

SH waves observed at epicentral distances greater than 90 contain considerable information
on the lowest 200 km of the mantle, the D″ region. Seven event LP WWSSN station …

Through a combination of interactive interpretation and powerful automated tracking, horizons
can be interpreted efficiently on every available trace in a 3D seismic survey. Horizon-…

The processing of multicomponent seismic data, carried out individually on the different
wavetypes (P‐, S‐ and converted waves), should result in an improved image of the subsurface. …

A detailed characterisation of the subsurface using high-resolution multi-component seismic
data requires additional processing. We adapted a frequency-domain wavefield separation …

The paper discusses basic ideas and principles underlying methods, which have proved
useful in the interpretation of diffraction and scattering phenomena by a smooth or slightly …

To derive the structure of the Lower Mantle, observations of P and S waves at epicentral
distances beyond 90 degrees have been used. The arrival times and amplitude decay with …

D-10 STRUCTURAL GRAVITY INVERSION ON A GRIDDED 2-D MODEL. Introduction AT
VAN ZON 1 P. DITMAR 2 K. ROY CHOWDHURY 1 and JC MONDT 3 1 Applied Geophysics …

Multicomponent reflection seismics has enabled geophysicists to gain more information about
the subsurface than by using vertical receivers only. In order to optimally proces the data, …