1887

Abstract

Summary

In this paper we present two improved wave mode separation methods in anisotropic media. The proposed methods aim to efficiently implement wave mode separation while preserving properties of decomposed physical quantities from original elastic wavefields. The first approach is using vector decomposition which output decomposed wave modes with same amplitude, phase as the input wavfields. The second method is introducing amplitude and phase corrections to divergence-like and curl-like operators, then wavefields energy can be conserved in wave mode separation. Synthetic results verify the effectiveness of the proposed methods.

Loading

Article metrics loading...

/content/papers/10.3997/2214-4609.201600620
2016-05-30
2024-04-28
Loading full text...

Full text loading...

References

  1. Dellinger, J., and J.Etgen
    . [1990] Wave-field separation in two-dimensional anisotropic media. Geophysics, 55, 914–919.
    [Google Scholar]
  2. Duan, Y, and P.Sava
    [2015] Scalar imaging condition for elastic reverse time migration. Geophysics,80, no.4, S127–S136
    [Google Scholar]
  3. Hu et al.
    , [2015] RTM angle gathers using analytic wavefield. EAGE Expanded Abstracts 2015.
    [Google Scholar]
  4. Rommel, B. E.
    [1994] Approximate polarization of plane waves in a medium having weak transverse isotropy. Geophysics, 59, 1605–1612.
    [Google Scholar]
  5. Sun et al
    , [2006] Prestack scalar reverse-time depth migration of 3D elastic seismic data. Geophysics, 71, no.5, S199–S207
    [Google Scholar]
  6. Yan, J., and P.Sava
    [2009] Elastic wave-mode separation for VTI media. Geophysics, 74, no. 5, WB19–WB32
    [Google Scholar]
  7. Zhang, Q., and G. A.McMechan
    . [2010] 2D and 3D elastic wavefield vector decomposition in the wavenumber domain for VTI media. Geophysics, 75, no. 3, D13–D26
    [Google Scholar]
http://instance.metastore.ingenta.com/content/papers/10.3997/2214-4609.201600620
Loading
/content/papers/10.3997/2214-4609.201600620
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