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Acoustic Transmission Loss in Shallow-Water Waveguides with an Sloping Bottom

  • OCEAN ACOUSTICS. HYDROACOUSTICS
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Abstract

The paper analytically demonstrates that for a shallow-water waveguide, there can be found an “optimal” bottom profile for which the energy losses with range will be the lowest, provided the initial and final depths are fixed and the depth increases monotonically. The analytical estimates given by the normal mode method are confirmed by a numerical experiment using a wide-angle parabolic equation. For the optimal profile, the features of the sound field behavior, its intensity with range from the source, and mode coupling are investigated.

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Funding

The study was supported by the Russian Foundation for Basic Research (project no. 16-32-60194) and Program no. 5 of the Presidium of the Russian Academy of Sciences “Photonic Technologies in Probing Inhomogeneous Media and Biological Objects”.

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Authors and Affiliations

  1. Prokhorov General Physics Institute of the Russian Academy of Sciences, 119991, Moscow, Russia

    A. A. Lunkov & M. A. Shermeneva

  2. Bauman Moscow State Technical University, 105005, Moscow, Russia

    A. A. Lunkov

  3. National Research Nuclear University MEPhI, 115409, Moscow, Russia

    M. A. Shermeneva

Authors
  1. A. A. Lunkov
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  2. M. A. Shermeneva
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Correspondence to M. A. Shermeneva.

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Lunkov, A.A., Shermeneva, M.A. Acoustic Transmission Loss in Shallow-Water Waveguides with an Sloping Bottom. Acoust. Phys. 65, 527–536 (2019). https://doi.org/10.1134/S1063771019050129

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  • DOI: https://doi.org/10.1134/S1063771019050129

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