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Acoustic wave propagation in gassy porous marine sediments: the rheological and the elastic effects

Dogan, Hakan, White, Paul and Leighton, Timothy (2017) Acoustic wave propagation in gassy porous marine sediments: the rheological and the elastic effects Journal of the Acoustical Society of America, 141, (3), pp. 2277-2288. (doi:10.1121/1.4978926).

Record type: Article


The preceding paper in this series [Mantouka, Dogan, White, and Leighton, J. Acoust. Soc. Am. 140, 274–282 (2016)] presented a nonlinear model for acoustic propagation in gassy marine sedi-ments, the baseline for which was established by Leighton [Geo. Res. Lett. 34, L17607 (2007)]. The current paper aims further advancement on those two studies by demonstrating the particular effects of the sediment rheology, the dispersion and dissipation of the first compressional wave, and the higher order re-scattering from other bubbles. Sediment rheology is included through the sedi-ment porosity and the definition of the contact interfaces of bubbles with the solid grains and the pore water. The intrinsic attenuation and the dispersion of the compressional wave are incorporated using the effective fluid density model [Williams, J. Acoust. Soc. Am. 110, 2276–2281 (2001)] for the far field (fully water-saturated sediment). The multiple scattering from other bubbles is included using the method of Kargl [J. Acoust. Soc. Am. 11, 168–173 (2002)]. The overall nonlinear formu- lation is then reduced to the linear limit in order to compare with the linear theory of Anderson and Hampton [J. Acoust. Soc. Am. 67, 1890–1903 (1980)], and the results for the damping coefficients, the sound speed, and the attenuation are presented. VC of America.

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Accepted/In Press date: 7 March 2017
Published date: 31 March 2017
Organisations: Acoustics Group, Inst. Sound & Vibration Research, Signal Processing & Control Grp


Local EPrints ID: 407429
PURE UUID: 70819402-bfb9-4b70-b710-e9214ac08f35
ORCID for Paul White: ORCID iD
ORCID for Timothy Leighton: ORCID iD

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Date deposited: 07 Apr 2017 01:03
Last modified: 01 Aug 2017 16:32

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