Accession Number:

ADA327177

Title:

Micro-local, Non-linear, Resolution Analysis of Generalised Radon Transform Inversions in Anisotropic Media,

Descriptive Note:

Corporate Author:

COLORADO SCHOOL OF MINES GOLDEN CENTER FOR WAVE PHENOMENA

Report Date:

1996-07-01

Pagination or Media Count:

30.0

Abstract:

The resolution analysis of generalized Radon Transform GRT inversion of seismic data is carried out in general anisotropic media. The GRT inversion formula is derived from the ray-Born approximation of the wave field for volume scatterers. However, by considering scattering surfaces in the resolution analysis, rather than parameter perturbations, we show that the inversion provides a reflectivity map and reflectiontransmission coefficients as functions of scattering angles and azimuths. Those coefficients can be subjected to any type of Amplitude Versus Angle AVA or Amplitude Versus Offset AVO analysis. By applying the inversion to Kirchhoff approximate data rather than Born approximate data, we show that the output is actually linear in the reflection coefficients and, hence, a nonlinear function of the change in medium parameters across discontinuity surfaces -- the reflectors of the medium.

Subject Categories:

  • Mining Engineering
  • Seismology
  • Theoretical Mathematics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE