We write down linearized anelastic AVO approximations appropriate for problems involving both elastic and anelastic incidence media. Variations in the anelastic properties of the Earth across the reﬂecting boundary are expressed in terms of reﬂectivity- and relative change-type quantities. RPP, RPS and RSS coefﬁcients are each investigated. There is a wide range of degrees of accuracy produced by this set of formulas and no obvious pattern. We conclude it is best to have all of the forms “on hand” to ﬁt anelastic AVO situations as they arise.
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