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Abstract

Summary

Joint migration inversion (JMI) has been implemented with the assumption that the medium parameters are only locally laterally varying. We extend JMI such that its modeling algorithm is able to handle arbitrary lateral medium variations. We show numerically that the the propagation operator, which is computed by modal expansion, is not limited by propagation angle. A perfectly matched layer (PML) is implemented to simulate wave propagation in unbounded media. The modeling algorithm is then used for Full Wavefield Migration (FWM) and JMI. We also implement JMI with a preconditioned conjugate gradient scheme. A numerical example shows that starting from a homogeneous model, the modified JMI algorithm is able to recover a velocity anomaly embedded into the model, with high resolution, along with the accompanying image.

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/content/papers/10.3997/2214-4609.201600837
2016-05-30
2024-04-26

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References

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Joint Migration Inversion for Laterally Varying Media
Conference Proceedings 2016, 1 (2016); https://doi.org/10.3997/2214-4609.201600837
/content/papers/10.3997/2214-4609.201600837
/content/papers/10.3997/2214-4609.201600837
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