Hybrid Born and Rytov inversion for seismic applications

Chris Stork

doi:10.1117/12.164845

1 December 1993 Hybrid Born and Rytov inversion for seismic applications

Chris Stork

Proceedings Volume 2033, Mathematical Methods in Geophysical Imaging; (1993) https://doi.org/10.1117/12.164845
Event: SPIE's 1993 International Symposium on Optics, Imaging, and Instrumentation, 1993, San Diego, CA, United States

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.

Citation Download Citation

Chris Stork "Hybrid Born and Rytov inversion for seismic applications", Proc. SPIE 2033, Mathematical Methods in Geophysical Imaging, (1 December 1993); https://doi.org/10.1117/12.164845

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