1887

Abstract

Summary

Cycle-skipping is the most significant local minimum FWI suffers in practice, while adaptive waveform inversion (AWI) provides a new waveform-inversion scheme which is robust against cycle-skipping. In this paper, we present an extensive test exploring the convergence properties of both FWI and AWI against cycle-skipping. A set of 1300 initial models are designed by progressively smoothing the Marmousi model and by bulk shifting its mean slowness. The convergence regions of FWI and AWI are mapped based on the recovered models of both approaches. AWI shows a convergence region broader than FWI. It succeeds refining the initial models to the global minimum which FWI cannot.

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/content/papers/10.3997/2214-4609.201701002
2017-06-12
2024-03-29
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References

  1. Warner & Guasch
    (2016) Adaptive waveform inversion: Theory. Geophysics, 81, R429–R445.
    [Google Scholar]
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