Space-time sound field interference in the horizontal plane in a coastal slope region

The nonstationary interference structure formed in the horizontal plane in the field of a point source in a coastal slope region is analyzed on the basis of the space-time horizontal ray concept. For a model that includes the typical bathymetry and sound velocity profile, the space, time, and freque...

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Bibliographic Details
Published inAcoustical physics Vol. 58; no. 3; pp. 301 - 307
Main Authors Katsnel’son, B. G., Malykhin, A. Yu
Format Journal Article
LanguageEnglish
Published Dordrecht SP MAIK Nauka/Interperiodica 01.05.2012
Subjects
Acoustics
Coastal
Horizontal
Interference
Mesoscale phenomena
Ocean Acoustics. Hydroacoustics
Perturbation methods
Physics
Physics and Astronomy
Planes
Slopes
Sound fields
coastal slope
shallow water
sound field interference
horizontal refraction
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Summary:The nonstationary interference structure formed in the horizontal plane in the field of a point source in a coastal slope region is analyzed on the basis of the space-time horizontal ray concept. For a model that includes the typical bathymetry and sound velocity profile, the space, time, and frequency dependences of the sound field are considered for different waveguide modes. The characteristic scales of the field variability in space and time are estimated. The frequency-time diagram is analyzed for the region of the interference of direct and reflected waves. The variability of the field interference structure in the presence of mesoscale perturbations is considered.
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ISSN:1063-7710
1562-6865
DOI:10.1134/S1063771012020078