LeBras, Ronan and Clayton, Robert W.
An iterative inversion of back-scattered acoustic waves.
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The application of the Born approximation to the
scattered wave field, followed by a WKBJ and far-field
approximation on the propagation Green's function for
a slowly varying background medium, leads to a simple
integral relation between the density and bulk-modulus
anomalies superimposed on the background medium
and the scattered wave field. An iterative inversion
scheme based on successive back-projections of the
wave field is used to reconstruct the two acoustic parameters.
The scheme, when applied to data generated
using the direct integral relation, shows that the variations
of the parameters can be reconstructed. The procedure
is readily applicable to actual data, since every
iterative step is essentially a prestack Kirchhoff migration
followed by the application of the direct Born
approximation and far-field operator.
|Additional Information:||© 1988 Society of Exploration Geophysicists.
Presented at the 54th Annual International Meeting, Society of Exploration Geophysicists, 1984. Manuscript received by the Editor August 27, 1986; revised manuscript received September 4, 1987.
We would like to thank John Louie and Christof Stork
from Caltech for their help and suggestions. We would also
like to thank Prof. Albert Tarantola from I.P.G. (Paris) for
suggesting the iterative method presented here. This work was
partially supported by a National Science Foundation PYI
award to RWC.
Contribution no. 4353 from the Division of Geological and
Planetary Science, California Institute of Technology.|
|Funding Agency||Grant Number|
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|Caltech Division of Geological and Planetary Sciences||4353|
|Official Citation:||Ronan LeBras and Robert W. Clayton
An iterative inversion of back-scattered acoustic waves Geophysics, April 1988, v. 53, p. 501-508, doi:10.1190/1.1442481 |
|Usage Policy:||No commercial reproduction, distribution, display or performance rights in this work are provided.|
|Deposited On:||16 Oct 2012 15:40|
|Last Modified:||31 Jan 2017 21:33|
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