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Abstract

Summary

Full Waveform Inversion (FWI) is a promising high-resolution tomography model, but the conventional L2 formulation suffers from cycle-skipping issue. This has led to many propositions of alternative misfit functions to mitigate this problem in the literature. However, most of these propositions focus on this single issue. In this work, we propose some key properties that alternative misfit functions should satisfy for going toward real data application. It is acknowledged that for real data application, the classical L2 waveform misfit is still widely used. Through a review of the literature and simple numerical examples, we assess some key features of several alternative misfit functions formulated in the time domain. These tested alternative strategies mitigate the requirement of an accurate initial model but show significant limitations for their systematic use. Accordingly, future research in this direction is still required for finding a robust and efficient substitute to L2 waveform misfit.

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/content/papers/10.3997/2214-4609.201701001
2017-06-12
2024-04-19

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References

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FWI Alternative Misfit Functions - What Properties Should They Satisfy?
Conference Proceedings 2017, 1 (2017); https://doi.org/10.3997/2214-4609.201701001
/content/papers/10.3997/2214-4609.201701001
/content/papers/10.3997/2214-4609.201701001
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