1887

Abstract

Summary

The conventional travel-time sensitivity kernel (TSK) is derived using the first-order Born approximation. However, the first-order Rytov approximation is more suitable for the first arrival tomography due to its better behaving for the forward scattering. In this paper, we present a wave-equation based travel-time tomography method, which is derived from the first-order Rytov-approximation to the wave equation. The travel-time sensitivity kernel can be calculated using the well-known RTM-like algorithm. The L2-norm of travel-time residuals is minimized by the Gauss-Newton algorithm. The presented method is applied to the first arrival travel-time inversion. Synthetic examples show that the long-wavelength part of the velocity model can be recovered well.

Loading

Article metrics loading...

/content/papers/10.3997/2214-4609.20141575
2014-06-16
2024-04-18
Loading full text...

Full text loading...

References

  1. Bishop, T.N., Bube, K.P., Cutler, R.T. et al.
    [1985] Tomographic determination of velocity and depth in laterally varying media. Geophysics, 50, 903–923.
    [Google Scholar]
  2. Liu, Y., Dong, L., Wang, Y., Zhu, J. and Ma, Z.
    [2009] Sensitivity kernels for seismic Fresnel volume tomography. Geophysics, 74(5), U35–U46.
    [Google Scholar]
  3. Luo, Y. and Schuster, G.T.
    [1991] Wave-equation traveltime inversion. Geophysics, 56, 645–653.
    [Google Scholar]
  4. Shin, C., Min, D.J., Marfurt, K.J., Lim, H.Y., Yang, D., Cha, Y., Ko, S., Yoon, K., Ha, T. and Hong, S.
    [2002] Traveltime and amplitude calculations using the damped wave solution. Geophysics, 67, 1637–1647.
    [Google Scholar]
  5. SlaneyM., Kak, A.C. and Larsen, L.
    [1984] Limitations of imaging with first-order diffraction tomography. IEEE Transactions on Microwave Theory and Techniques, MTT-32, 860–873.
    [Google Scholar]
  6. Vasco, D.W., Peterson, J.E., Jr. and Majer, E.L.
    [1995] Beyond ray tomography: Wavepaths and Fresnel volumes. Geophysics, 60(6), 1790–1804.
    [Google Scholar]
  7. Watanabe, T., Matsuoka, T. and Ashida, Y.
    [1999] Seismic traveltime tomography using Fresnel volume approach. 69th Annual International Meeting, SEG, Expanded Abstracts, 1402–1405.
    [Google Scholar]
  8. Xie, X. and Yang, H.
    [2008] The finite-frequency sensitivity kernel for migration residual moveout and its applications in migration velocity analysis. Geophysics, 73(6), 241–249.
    [Google Scholar]
  9. Xu, S., Zhang, Y. and Huang, T.
    [2006] Enhanced tomography resolution by a fat ray technique. 76th SEG Annual Meeting, Expanded Abstracts, 3354–3358.
    [Google Scholar]
  10. Zhou, C., Brandsberg-Dahl, S. and Jiao, J.
    [2009] A continuation approach to regularize the reflection tomography with a 3D Gaussian filter. 71st EAGE Conference & Exhibition, Expanded Abstracts, U031.
    [Google Scholar]
http://instance.metastore.ingenta.com/content/papers/10.3997/2214-4609.20141575
Loading
/content/papers/10.3997/2214-4609.20141575
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