Abstract
A model of attenuation and sound speed in water‐saturated granular media, based on a combination of the Biot–Stoll and contact squirt and shear drag model (BICSQS) [Chotiros, and Isakson, J. Acoust. Soc. Am. 116(4), 2011–2022, (2004)] and the frame virtual mass (FVM) model [Chotiros, and Isakson, J. Acoust. Soc. Am. 121(2), EL70 (2007)] is reconciled with the physical dimensions of the area and thickness of the fluid film at the grain‐grain contact. The results are consistent with recent experimental observations of enhanced viscosity in nanometer‐scale interfacial water films due to molecular mechanics [Goertz et al., Langmuir 23, 5491–5497 (2007)]. The resulting model has a reduced set of input parameters and it is able to match both the sound speed dispersion and attenuation measurements from a large number of sites, including the Sediment Acoustics Experiments (SAX99 and SAX04) in the Gulf of Mexico, the Shallow Water Experiment on the Atlantic coast, and the Yellow Sea [Zhou, J. Acoust. Soc. Am. 78(3...
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