1887

Abstract

Summary

The prism wave is a special waveform formed by two reflections underground, It usually carries rich information about the underground high-steep structures. In this study, we introduce a Fourier finite-difference (FFD) one-way wave extrapolation operator to implement prism wave imaging. Compared to prism wave reverse time migration (RTM), this method offers higher computational efficiency and greater flexibility in wavefield extrapolation. In practical applications, the computation range of prism wave one-way wave migration can be adjusted based on the specific conditions of the survey area. To address the issue of severe imaging noise in low-dip regions of complex models, we introduced dip-angle filtering to achieve joint imaging of prism wave FFD migration and traditional FFD migration. The final imaging results demonstrate high imaging quality in both ordinary regions and steeply dipping structures.

Loading

Article metrics loading...

/content/papers/10.3997/2214-4609.202510966
2025-06-02
2026-03-07
Loading full text...

Full text loading...

References

  1. Lutsenko, B. N. (1987). Seismic waves interpretation within complex media. Moscow, Nedra, 91(6), 120–131.
    [Google Scholar]
  2. Marmalyevskyy, N., Roganov, Y., & Gornyak, Z. (2005). Migration of duplex waves. SEG Technical Program Expanded Abstracts 2005, Society of Exploration Geophysicists, 2005, 2025–2028.
    [Google Scholar]
  3. Malcolm, A. E., Ursin, B., & De Hoop, M. V. (2009). Seismic imaging and illumination with internal multiples. Geophysical Journal International, 176(3), 847–864.
    [Google Scholar]
  4. Dai, W. (2012) Multisource least-squares migration and prism wave reverse time migration.
    [Google Scholar]
  5. Qu, Y. M., LiuC., HuangC. P., ZhouC., Sun, J. Z., & Li, Z. C. (2020). Elastic reverse time migration of prismatic waves for surface topography based on decoupled elastic wave equations in the curvilinear coordinates. Exploration Geophysics, 52(4), 369–387
    [Google Scholar]
  6. Wu, Z., Liu, Y. Z., & Yang, J. Z. (2024). Nonlinear least-squares reverse time migration of prismatic waves for delineating steeply dipping structures. Geophysics, 89(2), 129–143.
    [Google Scholar]
  7. Ristow, D., Ruehl, T. (1994) Fourier finite-difference migration. Geophysics, 59(12), 1882–1893.
    [Google Scholar]
/content/papers/10.3997/2214-4609.202510966
Loading
/content/papers/10.3997/2214-4609.202510966
Loading

Data & Media loading...

This is a required field
Please enter a valid email address
Approval was a Success
Invalid data
An Error Occurred
Approval was partially successful, following selected items could not be processed due to error