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Features of Propagation and Transformation of Low-Frequency Hydroacoustic Signals on a Shelf of Decreasing Depth

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Abstract

By the analysis of the experimental data and model calculations, features of the propagation of hydroacoustic signals over a shelf of decreasing depth generated by a low-frequency hydroacoustic emitter at a frequency of 22 Hz and their transformations at the “water–bottom” interface into the Rayleigh waves recorded by a coastal laser strainmeter are studied. Energy estimates for the propagating hydroacoustic signals are presented at different points on the shelf; and such estimates for the transformed seismic–acoustic signals are obtained at the location of a laser strainmeter in the Earth’s crust.

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Funding

This study was supported in part by the Russian Foundation for Basic Research, project no. 18–05–80011 (dangerous phenomena), the program of the Presidium of the Russian Academy of Sciences, and the task “Study of Fundamental Principles of the Appearance, Development, Transformation, and Interaction of Hydroacoustic, Hydrophysical, and Geophysical Fields in the World Ocean.”

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Authors and Affiliations

  1. V.I. Il’ichev Pacific Oceanological Institute, Far Eastern Branch, Russian Academy of Sciences, 690041, Vladivostok, Russia

    G. I. Dolgikh, S. S. Budrin, S. G. Dolgikh, V. V. Ovcharenko, V. A. Chupin, S. V. Yakovenko & V. A. Shvets

  2. Acoustic Science and Technology Laboratory, Harbin Engineering University, 150001, Harbin, P.R. China

    Piao Shengchun, Song Yang, Dong Yang & Wang Xiaohan

Authors
  1. G. I. Dolgikh
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  2. Piao Shengchun
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  3. S. S. Budrin
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  4. Song Yang
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  5. S. G. Dolgikh
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  6. V. V. Ovcharenko
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  7. V. A. Chupin
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  8. S. V. Yakovenko
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  9. Dong Yang
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  10. Wang Xiaohan
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  11. V. A. Shvets
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Corresponding author

Correspondence to G. I. Dolgikh.

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Translated by N. Podymova

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Dolgikh, G.I., Shengchun, P., Budrin, S.S. et al. Features of Propagation and Transformation of Low-Frequency Hydroacoustic Signals on a Shelf of Decreasing Depth. Dokl. Earth Sc. 491, 285–289 (2020). https://doi.org/10.1134/S1028334X20040030

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  • DOI: https://doi.org/10.1134/S1028334X20040030

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