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A Simple and Accurate Formula for the Absorption of Sound in Seawater

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3 Author(s)
van Moll, C.A.M. ; Underwater Technol. Dept., TNO Defence, Security & Safety, The Hague, Netherlands ; Ainslie, M.A. ; van Vossen, R.

In this communication, a new empirical formula for the absorption of sound in seawater is derived. The starting point of this investigation is the formula proposed by Ainslie and McColm for attenuation due to the boron and magnesium relaxations. Constants in the expression are treated as parameters to be determined. Since this is a nonlinear inverse problem, a global search is used to find the parameter setting that yields the best fit to in situ absorption measurements. The obtained formula is simpler than and at least as accurate as the widely used absorption formula of Franccedilois and Garrison (FG).

Published in:

Oceanic Engineering, IEEE Journal of  (Volume:34 ,  Issue: 4 )

Date of Publication:

Oct. 2009

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