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Abstract

Summary

For reverse-time migration, the imaging condition is one of the key factors that will not only determine the image quality but also influence the storage cost and computational efficiency. In this paper, we extend the highly-efficient and well amplitude-preserved excitation amplitude imaging condition from acoustic reverse-time migration to elastic reverse-time migration. In this paper, we firstly provide the detailed realization process of this imaging condition in elastic reverse-time migration. Considering the polarity reversals in PS image, we then propose an innovative way to combine the polarity reversal correction method with this imaging condition in PS wave imaging. Numerical examples demonstrate that this imaging condition is well amplitude-preserved and can obtain polarity-consistent PS image of comparable quality to that of source-normalized crosscorrelation imaging condition. Meanwhile, the disk occupation can be almost negligible and the computational efficiency is highly improved compared with those of crosscorrelation-based imaging conditions.

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/content/papers/10.3997/2214-4609.20140650
2014-06-16
2024-04-27

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References

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http://instance.metastore.ingenta.com/content/papers/10.3997/2214-4609.20140650
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Application of Excitation Amplitude Imaging Condition to PS Wave Imaging in Elastic Reverse-time Migration
Conference Proceedings 2014, 1 (2014); https://doi.org/10.3997/2214-4609.20140650
/content/papers/10.3997/2214-4609.20140650
/content/papers/10.3997/2214-4609.20140650
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