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- W2186571863 abstract "In a viscoelastic sample, the causality principle links the attenuation of a stress wave to the changes in its speed as the frequency varies. This theoretical link helps explain the velocity-frequency dispersion and attenuation commonly observed in rocks with fluid. Usually, the attenuation is maximum in the frequency range where the velocity change is most rapid. Experiments indicate that a link between velocity change and attenuation persists even in cases where both are functions of a different variable, not necessarily frequency. This link can be observed in a sample as well as among several samples. The variables responsible for velocity dispersion and attenuation include the viscosity of the pore fluid; temperature; confining and pore pressure; strain amplitude at the wave; water saturation; methane hydrate content; scale of inhomogeneity; porosity; and clay content. Perhaps a universal principle exists, not formulated as yet, that links velocity dispersion to attenuation for a multitude of underlying physical variables." @default.
- W2186571863 created "2016-06-24" @default.
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- W2186571863 date "2005-01-01" @default.
- W2186571863 modified "2023-09-23" @default.
- W2186571863 title "ATTENUATION AND VELOCITY DISPERSION - CAUSALITY LINK?" @default.
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