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Volume 58, Issue 3
  • E-ISSN: 1365-2478

Abstract

ABSTRACT

The phase‐shift‐plus‐interpolation and extended‐split‐step‐Fourier methods are wavefield‐continuation algorithms for seismic migration imaging. These two methods can be applied to regions with complex geological structures. Based on their unified separable formulas, we show that these two methods have the same kinematic characteristics by using the theory of pseudodifferential operators. Numerical tests on a Marmousi model demonstrate this conclusion. Another important aspect of these two methods is the selection of reference velocities and we explore the influence of the selection of reference velocities by comparing the geometric progression method and the statistical method. We show that the geometric progression method is simple but does not take into account the velocity distribution while the statistical approach is relatively complex but reflects the velocity distribution.

© 2009 European Association of Geoscientists & Engineers
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2009-12-01
2024-04-20

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Kinematic characteristics and the influence of reference velocities of phase‐shift‐plus‐interpolation and extended‐split‐step‐Fourier migration methods
Geophysical Prospecting 58, 429 (2010); https://doi.org/10.1111/j.1365-2478.2009.00845.x
/content/journals/10.1111/j.1365-2478.2009.00845.x
/content/journals/10.1111/j.1365-2478.2009.00845.x
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  • Article Type: Research Article

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