Visualizing AVAZ Parameter Estimates and Uncertainty

The uncertainty is proportional to the noise level, is dependent on the geology and is influenced by the acquisition geometry. Because of the nonlinearity of the inversion problem, azimuthal AVO inversion will always produce a positive estimate of the anisotropy gradient even if the media is isotropic; thus it is important that this attribute be examined along with its uncertainty. The interpreter must be confident that any potential anomaly is much larger than its uncertainty. Using this approach, legitimate anomalies due to geology may be distinguished from those due to noise and/or insufficient data.