Full-waveform adjoint tomography in a multiscale perspective

Yanhua O. Yuan, Frederik J. Simons, Ebru Bozdag

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

We discuss an algorithm to regularize elastic waveform inversions using wavelet-based constructive approximations of the data, synthetic and observed, in models that evolve as part of a gradient-based iterative scheme relying on forward and adjoint modeling carried out with a spectral-element method. For an elastic Marmousi model we show how our wavelet-based multiscale waveform inversion proceeds successively from large to small scales in the seismograms, with a progressive increase of the complexity of the resulting model. We explore the sensitivity of surface waves in imaging shallow structure. To circumvent cycle skipping we designed an envelope-misfit function within a wavelet-multiscale framework. We test our approach in a toy model in preparation for inversions at full complexity.

Original languageEnglish (US)
Title of host publicationSociety of Exploration Geophysicists International Exposition and 84th Annual Meeting SEG 2014
PublisherSociety of Exploration Geophysicists
Pages1194-1199
Number of pages6
ISBN (Print)9781634394857
DOIs
StatePublished - Jan 1 2014
EventSociety of Exploration Geophysicists International Exposition and 84th Annual Meeting SEG 2014 - Denver, United States
Duration: Oct 26 2014Oct 31 2014

Publication series

NameSociety of Exploration Geophysicists International Exposition and 84th Annual Meeting SEG 2014

Other

OtherSociety of Exploration Geophysicists International Exposition and 84th Annual Meeting SEG 2014
CountryUnited States
CityDenver
Period10/26/1410/31/14

All Science Journal Classification (ASJC) codes

  • Geophysics

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  • Cite this

    Yuan, Y. O., Simons, F. J., & Bozdag, E. (2014). Full-waveform adjoint tomography in a multiscale perspective. In Society of Exploration Geophysicists International Exposition and 84th Annual Meeting SEG 2014 (pp. 1194-1199). (Society of Exploration Geophysicists International Exposition and 84th Annual Meeting SEG 2014). Society of Exploration Geophysicists. https://doi.org/10.1190/segam2014-0816.1