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CHANG Ren-ho. THE NORMAL MODE SOUND FIELD IN SHALLOW-WATER HAVING NEGATIVE GRADIENT[J]. ACTA ACUSTICA, 1965, 2(1): 24-28. DOI: 10.15949/j.cnki.0371-0025.1965.01.005
Citation: CHANG Ren-ho. THE NORMAL MODE SOUND FIELD IN SHALLOW-WATER HAVING NEGATIVE GRADIENT[J]. ACTA ACUSTICA, 1965, 2(1): 24-28. DOI: 10.15949/j.cnki.0371-0025.1965.01.005

THE NORMAL MODE SOUND FIELD IN SHALLOW-WATER HAVING NEGATIVE GRADIENT

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  • Received Date: December 30, 1964
  • Available Online: August 21, 2022
  • The Sound field of a harmonic point source in shallow-water having negative gradient of sound velocity was treated. A monodecreasing sound velocity of sea water was assumed, and the concret form of velocity-depth function was not restricted. Dispersion equation and amplitude of normal modes were derived. From these the numerical solution of a concret problem was easily obtained. The group velocity and attenuation coefficient of normal mode have the simple form, and a better geometrical interpretation may be obtained.
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