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On the similarity of theories of anelastic and scattering attenuation

Bulletin of the Seismological Society of America

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Abstract

We point out basic parallels between theories of anelastic and scattering attenuation. We consider approximations to scattering effects presented by O'Doherty and Anstey (1971), Sato (1982), and Wu (1982). We use the linear theory of anelasticity. We note that the frequency dependence of Q can be related to a distribution of scales of physical properties of the medium. The frequency dependence of anelastic Q is related to the distribution of relaxation times in exactly the same manner as the frequency dependence of scattering Q is related to the distribution of scatterer sizes. Thus, the well-known difficulty of separating scattering from intrinsic attenuation is seen from this point of view as a consequence of the fact that certain observables can be interpreted by identical equations resulting from either of two credible physical theories describing fundamentally different processes. -from Authors

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
On the similarity of theories of anelastic and scattering attenuation
Series title:
Bulletin of the Seismological Society of America
Volume
79
Issue:
4
Year Published:
1989
Language:
English
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
First page:
1287
Last page:
1293
Number of Pages:
7