Sound scattering by spatially localized inhomogeneities in a shallow-water waveguide in the presence of internal waves

V. A. Grigor'ev; B. G. Katsnel'son; S. A. Pereselkov; V. G. Petnikov

doi:10.1134/1.1537386

Sound scattering by spatially localized inhomogeneities in a shallow-water waveguide in the presence of internal waves

V. A. Grigor'ev, B. G. Katsnel'son, S. A. Pereselkov, V. G. Petnikov

Research output: Contribution to journal › Article › peer-review

Abstract

A method is developed for solving the problem of sound scattering by concentrated inhomogeneities in a waveguide of small depth in the presence of internal waves (IW) typical of an oceanic shelf. The sound field fluctuations related to the motion of a model scatterer (a soft spheroid) and to the propagation of the IW are calculated and analyzed. It is shown that the field of internal waves considerably affects the scattered sound field even when the source-receiver and source-scatterer distances are relatively small (about several kilometers). This effect depends not only on the amplitude of the IW, but on their propagation direction as well.

Original language	English
Pages (from-to)	36-42
Number of pages	7
Journal	Acoustical Physics
Volume	49
Issue number	1
DOIs	https://doi.org/10.1134/1.1537386
State	Published - Jan 2003
Externally published	Yes

Bibliographical note

Funding Information:
ACKNOWLEDGMENTS This work was supported by the Russian Foundation for Basic Research, project nos. 99-02-17671, 00-05-64752, and 02-02-16509.

ASJC Scopus subject areas

Acoustics and Ultrasonics

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abstract = "A method is developed for solving the problem of sound scattering by concentrated inhomogeneities in a waveguide of small depth in the presence of internal waves (IW) typical of an oceanic shelf. The sound field fluctuations related to the motion of a model scatterer (a soft spheroid) and to the propagation of the IW are calculated and analyzed. It is shown that the field of internal waves considerably affects the scattered sound field even when the source-receiver and source-scatterer distances are relatively small (about several kilometers). This effect depends not only on the amplitude of the IW, but on their propagation direction as well.",

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AU - Pereselkov, S. A.

AU - Petnikov, V. G.

N1 - Funding Information: ACKNOWLEDGMENTS This work was supported by the Russian Foundation for Basic Research, project nos. 99-02-17671, 00-05-64752, and 02-02-16509.

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AB - A method is developed for solving the problem of sound scattering by concentrated inhomogeneities in a waveguide of small depth in the presence of internal waves (IW) typical of an oceanic shelf. The sound field fluctuations related to the motion of a model scatterer (a soft spheroid) and to the propagation of the IW are calculated and analyzed. It is shown that the field of internal waves considerably affects the scattered sound field even when the source-receiver and source-scatterer distances are relatively small (about several kilometers). This effect depends not only on the amplitude of the IW, but on their propagation direction as well.

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Sound scattering by spatially localized inhomogeneities in a shallow-water waveguide in the presence of internal waves

Abstract

Bibliographical note

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