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- W1988609360 abstract "Exact generalized potentials are developed to describe the motion of isotropic, continuously stratified media. The approach due to Richards [Bull. Seis. Soc. Am. 64, 1575 (1974)] is generalized by using tensor rather than scalar scale factors in defining the generalized shear (S) and compressional (P) potentials in terms of the displacement. This generalization leads to: (1) exact coupled second-order differential equations for the P and S wave potentials, (2) P and S decoupling at high frequencies and for special media, and (3) an explicit form for the gradient driven P-S coupling. The coupling has a frequency-dependent resonance structure as a function of depth into the sediment. For a typical deep sea sediment, clay, this P-S coupling is negligible above about 5 Hz. For sand sediment types, typical of shallow water environments, this P-S coupling can be important up to about 60 Hz and represents a potentially important low-frequency loss process. [Work supported by Naval Ocean Research and Development Activity.]" @default.
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- W1988609360 date "1982-04-01" @default.
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- W1988609360 title "Gradient driven coupling between shear and compressional waves" @default.
- W1988609360 doi "https://doi.org/10.1121/1.2019509" @default.
- W1988609360 hasPublicationYear "1982" @default.
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