Anelasticity and spherical-wave AVO-modelling in VTI-media

Arnim B. Haase and Charles P. Ursenbach

ABSTRACT

Anelasticity modifies VTI AVO responses. When reflection amplitude losses due to attenuation are compensated for by unit reflectivity scaling and spreading factor scaling, AVO-characteristics similar to the elastic situation are found. Q-factor dependence of spherical wave AVO is found to be strongest near critical angles. This Q-dependence, to some degree, mimics depth dependence of elastic comparisons.

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