Broadband modeling of sound propagation in shallow water with an elastic bottom

2014 ◽  
Author(s):  
Li Li ◽  
Shengchun Piao ◽  
Haigang Zhang ◽  
Yaxiao Mo ◽  
Jun Tang
Keyword(s):  
Shallow Water ◽  
Sound Propagation ◽  
Elastic Bottom

Broadband modeling of sound propagation in shallow water with an irregular elastic bottom

2014 ◽  
Vol 135 (4) ◽  
pp. 2302-2302
Author(s):  
Li Li ◽  
Shengchun Piao ◽  
Haigang Zhang ◽  
Yaxiao Mo ◽  
Jun Tang
Keyword(s):  
Shallow Water ◽  
Sound Propagation ◽  
Elastic Bottom

scholarly journals Under-ice shallow-water sound propagation and communication in the Baltic Sea

2013 ◽  
Author(s):  
Erland Sangfelt ◽  
Sven Ivansson ◽  
Ilkka Karasalo
Keyword(s):  
Baltic Sea ◽  
Shallow Water ◽  
Sound Propagation ◽  
The Baltic Sea ◽  
The Baltic

scholarly journals Shallow Water Sound Propagation in the Arctic Ocean

1961 ◽  
Vol 33 (11) ◽  
pp. 1674-1674
Author(s):  
K. Hunkins ◽  
H. Kutschale ◽  
T. Herron
Keyword(s):  
Arctic Ocean ◽  
Shallow Water ◽  
Sound Propagation ◽  
The Arctic ◽  
The Arctic Ocean

scholarly journals Sound diffraction on an elastic spheroidal shell

2021 ◽  
Vol 3 (397) ◽  
pp. 97-114
Author(s):  
A. Kleschev ◽  
Keyword(s):  
Group Velocity ◽  
Planar Waveguide ◽  
Sound Propagation ◽  
Spectral Characteristics ◽  
Sound Field ◽  
Signal Propagation ◽  
Elastic Bottom ◽  
Harmonic Signals ◽  
Scattered Fields ◽  
Sound Diffraction

Object and purpose of research. This paper obtains solutions and performs estimations of characteristics of sound reflection and scattering by ideal and elastic bodies of various shapes (analytical and non-analytical) near media interface, or underwater sonic channel, or in a planar waveguide with a solid elastic bottom. Materials and methods. The harmonic signals are investigated with the method of normal waves based on the phase velocity of signal propagation, and impulse signals related to the energy transfer are studied using the method of real and imaginary sources and scatterers based on the group velocity of propagation. Main results. The scattered sound field is calculated for ideal spheroids (elongated and compressed) at fluid – ideal medium interface. The spectrum of a scattered impulse signal is calculated for a body placed in a sonic channel. First reflected impulses are found for an ideal spheroid in a planar waveguide with anisotropic bottom. Conclusion. In the studies of diffraction characteristics of bodies at media interfaces it was found that the main contribution to scattered field is given by interference of scattered fields rather than interaction of scatterers (real or imaginary). It is shown that at long distances the spectral characteristics of the channel itself have a prevalent role. When impulse sound signals in the planar waveguide are used, it is necessary to apply the method of real and imaginary sources and scatterers based on the group velocity of sound propagation.

Numerical investigation of out-of-plane sound propagation in a shallow water experiment

2008 ◽  
Vol 124 (6) ◽  
pp. EL341-EL346 ◽  
Author(s):  
Frédéric Sturm ◽  
Sven Ivansson ◽  
Yong-Min Jiang ◽  
N. Ross Chapman
Keyword(s):  
Shallow Water ◽  
Numerical Investigation ◽  
Sound Propagation ◽  
Out Of Plane ◽  
Plane Sound
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