Waveguide sound propagation in a turbulent atmosphere above a statistically rough surface of the ground

2011 ◽  
Vol 130 (4) ◽  
pp. 2514-2514
Author(s):  
Vladimir E. Ostashev ◽  
D. Keith Wilson ◽  
Sergey N. Vecherin
Keyword(s):  
Rough Surface ◽  
Turbulent Atmosphere ◽  
Sound Propagation

scholarly journals A numerical study of sound propagation through a turbulent atmosphere

1993 ◽  
Vol 93 (4) ◽  
pp. 2407-2407
Author(s):  
Daniel Juve ◽  
Philippe Blanc‐Benon ◽  
Patrick Chevret
Keyword(s):  
Turbulent Atmosphere ◽  
Sound Propagation ◽  
Numerical Study

FORWARD AND BACKWARD MODAL STATISTICS FOR ROUGH SEABED SURFACE SCATTERING IN SHALLOW WATER

2014 ◽  
Vol 22 (01) ◽  
pp. 1440004 ◽  
Author(s):  
D. P. KNOBLES ◽  
J. D. SAGERS
Keyword(s):  
Shallow Water ◽  
Integral Equations ◽  
Rough Surface ◽  
Numerical Solutions ◽  
Sound Propagation ◽  
Surface Scattering ◽  
Coupled Equations ◽  
Random Rough Surface ◽  
Basic Characteristics

Addressed is the physics of sound propagation through a shallow water waveguide whose seabed has a random rough surface. The basic coupled integral equations for the modal amplitudes can be split into forward and backward going coupled integral equations. Numerical solutions of the coupled equations are obtained for multiple roughness realizations from which ensemble averages can be obtained for the modal intensities and cross-mode coherence as a function of range. Sample calculations illustrate some of the basic characteristics of the average cross-mode coherence and intensity with and without seabed attenuation and for different source depths on range scales of 1500 acoustic wavelengths.

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