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Abstract

Summary

Although elastic full waveform inversion (FWI) becomes more and more popular owing to the potential of providing more subsurface model parameters, its computational amount is still unaffordable. The accuracy and efficiency of FWI is largely dependent on the numerical solution methods to solve wave equations. We propose a time-space domain adaptive staggered-grid finite-difference (FD) method and extend it into the elastic FWI. Based on the time-space domain dispersion relation of elastic wave equations, our new FD approach has greater modelling precision. In addition, the time of computation can be reduced greatly by applying the adaptive spatial operator length scheme. Synthetic data experiment demonstrates that our inversion method nearly obtains the same accuracy with the efficiency increased by 34%.

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/content/papers/10.3997/2214-4609.20140878
2014-06-16
2024-04-25

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References

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Elastic Full Waveform Inversion Using the Time-space Domain Adaptive Staggered-grid Finite-difference Method
Conference Proceedings 2014, 1 (2014); https://doi.org/10.3997/2214-4609.20140878
/content/papers/10.3997/2214-4609.20140878
/content/papers/10.3997/2214-4609.20140878
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