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Temperature Dependence of High Frequency Sound Attenuation in Porous Marine Sediments

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Unconsolidated marine sediment is a granular solid high concentrated water suspension. In this paper, the effect of temperature on the sound attenuation on an unconsolidated marine sediment is investigated by employing suitable equations for density, viscosity, sound speed and absorption of water as a function of the temperature. It is assumed that the temperature variation in the bulk compressibility and the density of solid mineral particles suspended in the water can be considered negligible compared to the variation of the same physical properties of water. Experimental measurements of sound attenuation in a sandy water sediment carried out at several temperatures determines the validity of the theoretical assumptions. It is deduced that the temperature effect on sound attenuation increases at high frequency and decreases at high temperature.
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Document Type: Research Article

Publication date: 2002-03-01

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  • Acta Acustica united with Acustica, published together with the European Acoustics Association (EAA), is an international, peer-reviewed journal on acoustics. It publishes original articles on all subjects in the field of acoustics, such as general linear acoustics, nonlinear acoustics, macrosonics, flow acoustics, atmospheric sound, underwater sound, ultrasonics, physical acoustics, structural acoustics, noise control, active control, environmental noise, building acoustics, room acoustics, acoustic materials, acoustic signal processing, computational and numerical acoustics, hearing, audiology and psychoacoustics, speech, musical acoustics, electroacoustics, auditory quality of systems. It reports on original scientific research in acoustics and on engineering applications. The journal considers scientific papers, technical and applied papers, book reviews, short communications, doctoral thesis abstracts, etc. In irregular intervals also special issues and review articles are published.
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