Waveform inversion of marine reflection seismograms for Pimpedance and Poisson's ratio
Igel, H., H. Djikpesse, and A. Tarantola (1996),
Waveform inversion of marine reflection seismograms for Pimpedance and Poisson's ratio,
Geophys. J. Int., 124(2), 363371.
 Abstract
 The estimation of the elastic properties of the crust from surface seismic recordings is of great importance for an understanding of the lithology and the detection of mineral resources. Although in marine reflection experiments only P waves are recorded, information on shear properties of the medium is contained in the reflection amplitudes recorded at different distances from the source. Being able to estimate both dilatational and shear properties gives stronger constraints on the lithology. It is therefore desirable to recover both types of elastic parameters from multioffset seismograms. In the realdata example presented here, the amplitude of the reflections cannot be explained by one parameter related to the dilatational properties (P impedance) only, when trying to minimize the leastsquares fit between synthetic and real multioffset seismograms. When adding an additional parameter related to the shear properties (Poisson's ratio), the fit between synthetic and real seismograms improves. Syntheticwaveformfitting experiments underline the possibility of recovering Poisson's ratio when the Pimpedance model is well known from fitting waveforms recorded at small offsets. In the realdata example, the resulting models for P impedance and Poisson's ratio are anticorrelated in most depth regions, but are correlated in a particular depth region, indicating a sudden change in lithology.
 BibTeX

@article{id330,
author = {H. Igel and H. Djikpesse and A. Tarantola},
journal = {Geophys. J. Int.},
number = {2},
pages = {363371},
title = {{Waveform inversion of marine reflection seismograms for Pimpedance and Poisson's ratio}},
volume = {124},
year = {1996},
language = {en},
}
 EndNote

%0 Journal Article
%A Igel, H.
%A Djikpesse, H.
%A Tarantola, A.
%D 1996
%N 2
%V 124
%J Geophys. J. Int.
%P 363371
%T Waveform inversion of marine reflection seismograms for Pimpedance and Poisson's ratio