Evidence of dispersion in a water-saturated granular sediment

Wilson, P.S.,Wilbur, J.C.,Carey, W.M.,Roy, R.A.

Oceans 2005 - Europe（2005）

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Abstract

An experiment was conducted to measure the sound speed in a water-saturated granular sediment within a range of frequencies where dispersion is predicted by a number of existing models. Between 2-4 kHz, the sound speed was inferred from measurements of the resonance frequencies of a right-circular-cylindrical container filled with the material. From 20-300 kHz, the sound speed was obtained directly from time-of-flight measurements within the same sediment. Dispersion consistent with the Williams Effective Density Fluid Model was observed.

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Key words

resonance,sediments,underwater sound,2 to 4 khz,20 to 300 khz,williams effective density fluid model,resonance frequency,right-circular-cylindrical container,sound speed,time-of-flight measurement,water-saturated granular sediment dispersion,fluid model,resonant frequency,dispersion,time of flight,predictive models

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