1887

Abstract

Summary

In seismic data processing, serious problems could be caused by the existence of triplication and need to be treated properly for tomography and other inversion methods. In order to analyze the triplication for the converted wave in the TTI model, we examine the traveltime of the triplication from the curvature of averaged P and S wave slowness. Three models are defined and tested in the numerical examples to illustrate the behavior of the TTI model for the triplicated traveltime with the change of the rotation angle. Since the orientation of an interface is related to the orientation of the symmetry axis, the triplicated traveltime is encountered for the converted wave in the TTI model assuming interfaces to be planar and horizontal. The triplicated region is influenced by the place and level of the concave curvature of the P and S wave slowness.

Loading

Article metrics loading...

/content/papers/10.3997/2214-4609.202112423
2021-10-18
2024-04-29
Loading full text...

Full text loading...

References

  1. Roganov, Y. and Stovas, A.
    [2010] On shear-wave triplications in a multilayered transversely isotropic medium with vertical symmetry axis. Geophysical Prospecting, 58, 549–559.
    [Google Scholar]
  2. Stovas, A.
    [2016] Vertical on-axis triplications in orthorhombic media. Journal of Geophysics and Engineering, 13, 875–879.
    [Google Scholar]
  3. Thomsen, L.
    [1986] Weak elastic anisotropy. Geophysics51, 1954–1966.
    [Google Scholar]
  4. Thomsen, L. and Dellinger, J.
    [2003] On shear-wave triplication in transversely isotropic media. Journal of Applied Geophysics, 54, 289–296.
    [Google Scholar]
  5. Xu, S. and Stovas, A.
    [2018] Triplications on traveltime surface for pure and converted wave modes in elastic orthorhombic media. Geophysical Journal International, 215, 677–694.
    [Google Scholar]
  6. Xu, S., Stovas, A. and Mikada, H.
    [2020] Triplications for the converted wave in transversely isotropic media with a tilted symmetry axis. Geophysical Prospecting, 68, 1126–1138.
    [Google Scholar]
http://instance.metastore.ingenta.com/content/papers/10.3997/2214-4609.202112423
Loading
/content/papers/10.3997/2214-4609.202112423
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