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Vol 41 No 41995
Characteristics of Sound Reflected from Sea
Nonstationary Radiation Modes of a System of Two Multimode Cylindrical Piezoelectric Transducers
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Academy of Sciences acoustic field Akust amplitude aperture synthesis approximation attenuation backscattering beam borehole bottom boundary conditions bulk viscosity calculated channel coherent components corresponding curves density dependence depth detectors determined distance distribution elastic energy equation experimental flow fluctuations fluid frequency function grazing angle Green's function halls horizontal inhomogeneous integral isobath laser layer linear liquid longitudinal wave measurements medium method Moscow Nizhnii Novgorod noise nonlinear obtained ocean optical fiber Original Russian oscillations parameters phase Phys physical piezoelectric plane plate polarization potential pressure problem propagation anomaly pulse quency radiation radiation efficiency radius range ratio reflection region resonance reverberation rough surface Russian Academy scattering coefficient sensors shell signal solution sonar sound field Sound Scattering sound velocity sound wave spatial spherical technique tion transducer transverse waves ultrasonic ultrasound values variables vertical vibrations waveguide zero zone