Full-waveform adjoint tomography in a multiscale perspective

Yanhua O. Yuan, Frederik Jozef Simons, Ebru Bozdağ

Research output: Contribution to journalConference article

1 Scopus citations

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)
Pages (from-to)1194-1199
Number of pages6
JournalSEG Technical Program Expanded Abstracts
Volume33
DOIs
StatePublished - Jan 1 2014
EventSEG Denver 2014 Annual Meeting, SEG 2014 - Denver, United States
Duration: Oct 26 2011Oct 31 2011

All Science Journal Classification (ASJC) codes

  • Geotechnical Engineering and Engineering Geology
  • Geophysics

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