The infrasonic (0.15–30 Hz) responses of several nitrogen‐saturated porous models are measured experimentally. Within the frequency range covered, the results verify a theory proposed earlier by Smith and Greenkorn [J. Acoust. Soc. Am. 52, 247–253 (1972)]. Results of a similar response study of water‐filled porous media show the effect of dynamic coupling between the solid and fluid phases, the excitation of which precludes agreement with a rigid frame theory. However, the results significantly indicate an approach to a condition of zero coupling at very low frequencies and/or low permeabilities.

This content is only available via PDF.
You do not currently have access to this content.