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Abstract

Summary

In this paper, we study quantitatively the influence of seismic wavelet amplitude error on different scale anomaly inversion in frequency-domain full waveform inversion (FWI). We design 40 anomaly models with different size and 8 perturbation seismic wavelets, and evaluate quantitatively reconstructed model error by calculating the optimal similarity coefficient and model fitting error. Tests show that when perturbation of seismic wavelet amplitude is larger than 30%, FWI obtains completely incorrect and unacceptable inverted results even if initial model is just the true model. In addition, the utilization of transmission data mitigates influence of inaccurate seismic wavelet amplitude on FWI partly. Finally, the effects of wavelet amplitude error on the shape and value of reconstructed models are different, complicated, in particular when the scale of anomaly is lower than half of wavelength. Therefore, inaccuracy of seismic wavelet amplitude is a key factor in frequency-domain FWI and should be considered in practice.

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/content/papers/10.3997/2214-4609.20140855
2014-06-16
2024-04-27

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References

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http://instance.metastore.ingenta.com/content/papers/10.3997/2214-4609.20140855
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Influence of Inaccurate Wavelet Amplitude on Frequency-domain Full Waveform Inversion
Conference Proceedings 2014, 1 (2014); https://doi.org/10.3997/2214-4609.20140855
/content/papers/10.3997/2214-4609.20140855
/content/papers/10.3997/2214-4609.20140855
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