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Proceedings Paper

Hybrid Born and Rytov inversion for seismic applications
Author(s): Chris Stork
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Paper Abstract

The bane of non-linear waveform inversion based on the Born scattering model has been the need of a close starting model--particularly for the broad components of the velocity field. Without a close starting model the method is susceptible to failure by getting stuck in a local minima. Since these broad components of the velocity field are larger than the wavelengths of the signal, they do not scatter energy. These velocity components mainly effect the transmission of energy. Along the lines of Woodward (1990), we show that the Rytov approximation is better suited than the Born inversion for these components. The Rytov approximation can be combined with the Born approximation to form a hybrid method to perform an improved non-linear waveform inversion. This hybrid method is more effective with starting models that are not close in the broad components and may provide an optimal waveform inversion.

Paper Details

Date Published: 1 December 1993
PDF: 7 pages
Proc. SPIE 2033, Mathematical Methods in Geophysical Imaging, (1 December 1993); doi: 10.1117/12.164845
Show Author Affiliations
Chris Stork, Advance Geophysical Corp. (United States)

Published in SPIE Proceedings Vol. 2033:
Mathematical Methods in Geophysical Imaging
Sergio E. Zarantonello, Editor(s)

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