1887

Abstract

Summary

This study derives a new pure qP wave equation based on acoustic approximation. This new equation is free from spurious shear wave interference, and all terms can be solved using finite-difference methods, resulting in high computational efficiency. By approximating the square root term in the decoupled qP wave dispersion relationship using the Taylor expansion, the new equation is expressed as a combination of the wave vector k and the scalar S. By extracting the wave vector k, a novel pure qP wave equation is obtained for TTI medium. The new equation can remain stable when ε<δ. And numerical experiments demonstrate that the new method possesses higher accuracy compared to a similar method. Finally, the new approach is applied to reverse time migration (RTM) and shows good imaging results.

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/content/papers/10.3997/2214-4609.2023101459
2023-06-05
2026-04-15

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References

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/content/papers/10.3997/2214-4609.2023101459
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Efficient Reverse Time Migration Method in TTI Media Based on a Pure Pseudo-Acoustic Wave Equation
Conference Proceedings 2023, 1 (2023); https://doi.org/10.3997/2214-4609.2023101459
/content/papers/10.3997/2214-4609.2023101459
/content/papers/10.3997/2214-4609.2023101459
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