Anisotropy in horizontal plane for the sound propagation in the ocean in the presence of internal waves

The way in which internal waves change in amplitude as they propagate through an incompressible fluid or an isothermal atmosphere is considered. A similarity solution for the small amplitude isolated viscous internal wave which is generated by a localized two-dimensional disturbance or energy source was given by Thomas & Stevenson (1972). It will be shown how summations or superpositions of this solution may be used to examine the behaviour of groups of internal waves. In particular the paper considers the waves produced by an infinite number of sources distributed in a horizontal plane such that they produce a sinusoidal velocity distribution. The results of this analysis lead to a new small perturbation solution of the linearized equations.

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Modeling sound propagation through internal waves using a spectral element method

The Journal of the Acoustical Society of America ◽

10.1121/1.4830905 ◽

2013 ◽

Vol 134 (5) ◽

pp. 4079-4079

Author(s):

Sumedh M. Joshi ◽

Megan S. Ballard ◽

Peter J. Diamessis

Keyword(s):

Internal Waves ◽

Spectral Element Method ◽

Sound Propagation ◽

Spectral Element ◽

Element Method

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Wavefront folding, chaos, and diffraction for sound propagation through ocean internal waves

The Journal of the Acoustical Society of America ◽

10.1121/1.419820 ◽

1997 ◽

Vol 102 (1) ◽

pp. 239-255 ◽

Cited By ~ 75

Author(s):

Jeffrey Simmen ◽

Stanley M. Flatté ◽

Guang-Yu Wang

Keyword(s):

Internal Waves ◽

Sound Propagation

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An Investigation of the Effects of Internal Waves on Sound Propagation in a Stratified Medium with a Sloping Bed

Acoustical Physics ◽

10.1134/s1063771018010049 ◽

2018 ◽

Vol 64 (1) ◽

pp. 58-63 ◽

Cited By ~ 1

Author(s):

H. Deldar ◽

A. A. Bidokhti ◽

V. Chegini

Keyword(s):

Internal Waves ◽

Sound Propagation ◽

Stratified Medium ◽

Sloping Bed

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Modeling of three-dimensional sound propagation through solitary internal waves

Acta Physica Sinica ◽

10.7498/aps.68.20190478 ◽

2019 ◽

Vol 68 (20) ◽

pp. 204302

Author(s):

Ze-Zhong Zhang ◽

Wen-Yu Luo ◽

Zhe Pang ◽

Yi-Qing Zhou

Keyword(s):

Internal Waves ◽

Sound Propagation ◽

Three Dimensional ◽

Solitary Internal Waves

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Diffraction and chaos for sound propagation through ocean internal waves

The Journal of the Acoustical Society of America ◽

10.1121/1.409390 ◽

1994 ◽

Vol 95 (5) ◽

pp. 2882-2882

Author(s):

Jeffrey Simmen ◽

Guang‐yu Wang ◽

Stanley Flatté

Keyword(s):

Internal Waves ◽

Sound Propagation

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Modeled acoustic propagation through a measured large-amplitude nonlinear internal wave in northern South China Sea

10.5194/egusphere-egu2020-12175 ◽

2020 ◽

Author(s):

Peng Qi

Keyword(s):

South China Sea ◽

Internal Waves ◽

South China ◽

Large Amplitude ◽

Sound Propagation ◽

Transmission Loss ◽

Northern South China Sea ◽

Acoustic Propagation ◽

Propagation Model ◽

China Sea

<p>Preliminary results are presented from an analysis of modeled mid-frequency sound propagation through a measured large-amplitude nonlinear internal solitary wave, and in-situ measurements of trains of nonlinear internal waves in northern South China Sea (SCS) as well. An acoustic propagation model based on ray theory was utilized to compute the transmission loss (TL) associated with passing the large depression measured internal waves. The TL was computed using the model considering (1) range-dependent and range-independent environmental scenario and (2) for different source and receiver depth configurations. This presentation will propose several interesting aspects of influence of internal waves on acoustic propagation, including "shadow zones", with or without eddy, etc.</p>

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