On: “Frequency‐independent background internal friction in heterogeneous solids” by Baxter H. Armstrong (GEOPHYSICS, June 1980, p. 1042–1054).
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In his recent paper Dr. Armstrong proposes a novel approach based on considerations of thermal conduction and thermoelastic dissipation to explain the observed nearly constant Q behavior toward low frequencies in randomly heterogeneous solids. I feel, however, the fluctuation coefficient R defined by his equation (22) does have an inherent frequency dependence introduced through the [Formula: see text] factors so that the attenuation coefficient A might be a more complicated function of frequency than suggested by equation (24).
1971 ◽
Vol 32
(C2)
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pp. C2-147-C2-147
1989 ◽
Vol 23
(2)
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pp. 197-202
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2017 ◽
Vol 232
(19)
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pp. 3482-3490
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2005 ◽
Vol 475-479
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pp. 257-260
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1987 ◽
Vol 63
(1)
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pp. 36-43
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1965 ◽
Vol 36
(2)
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pp. 198-201
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