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Spatial Vector–Scalar Structure of Low-Frequency Fields of Multipole Sources in Interference Maxima Zones

  • OCEAN ACOUSTICS. HYDROACOUSTICS
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Abstract

For low-frequency multipole sources of various orders in a Pekeris waveguide, we have obtained and studied the dependences that determine the change in the structure and magnitude of interference maxima of the vector–scalar signal components with varying frequencies; waveguide, receiver, and source depths; and distances between them. Approximating expressions are found that, for different waveguide depths and source and receiver locations, are consistent with the exact decay laws of these field components in these zones. It is shown that the dependences of the fields of all multipoles based on the characteristics of the amplitude–phase structure are divided into two large groups.

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ACKNOWLEDGMENTS

The authors are grateful to V.G. Petnikov for useful advice.

Funding

The study was financially supported by the program “Shallow-Water Acoustics, Nonlinear Acoustic Diagnostics, Nonlinear Wave Dynamics” (state registration number AAAA-A18-118021390174-1) and the Russian Foundation for Basic Research (project no. 19-08-00941).

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Authors and Affiliations

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

    G. N. Kuznetsov & A. N. Stepanov

  2. Samara National Research University, 443086, Samara, Russia

    A. N. Stepanov

Authors
  1. G. N. Kuznetsov
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  2. A. N. Stepanov
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Correspondence to G. N. Kuznetsov.

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Kuznetsov, G.N., Stepanov, A.N. Spatial Vector–Scalar Structure of Low-Frequency Fields of Multipole Sources in Interference Maxima Zones. Acoust. Phys. 66, 277–289 (2020). https://doi.org/10.1134/S1063771020030045

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  • DOI: https://doi.org/10.1134/S1063771020030045

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