The ambient noise fluctuation and directionality study in South China Sea

2005 ◽  
Author(s):  
Ruey-Chang Wei ◽  
J.F. Lynch ◽  
A.E. Newhall ◽  
Hsiang-Chih Chan ◽  
Chih-Sheng Liu ◽  
...  
Keyword(s):  
South China Sea ◽  
South China ◽  
Ambient Noise ◽  
China Sea

Vector Ocean Ambient Noise Spectrum Simulation Based on Parabolic Equation Model in Shallow Water

2017 ◽  
Vol 25 (02) ◽  
pp. 1750034
Author(s):  
Liufang Fu ◽  
Peng Li ◽  
Xinhua Zhang ◽  
Shuqing Ma ◽  
Chengzhi Gao
Keyword(s):  
Parabolic Equation ◽  
South China Sea ◽  
Particle Velocity ◽  
South China ◽  
Ambient Noise ◽  
Sound Pressure ◽  
Noise Spectrum ◽  
China Sea ◽  
Simulation Results ◽  
Horizontal Particle

Ocean ambient noise spectrum is one of the most important characteristics of ambient noise. An ocean vector ambient noise field model was built up based on parabolic equation in this paper. Then the spectra of sound pressure, horizontal particle velocity and vertical particle velocity were calculated applying the model considering noise sources well distributed on the surface with typical summer sound speed profile in South China Sea. The simulation results showed that spectra of sound pressure, horizontal particle velocity and vertical particle velocity were obviously not varied with depth. Then, the simulated results were compared with the experiment results at the receiving depth of a trail in South China Sea in July 2012. Compared with the experimental results, the simulation results are consistent well with the experimental one of sound pressure and horizontal particle velocity in the trend. But the simulation values at low frequency band below 500[Formula: see text]Hz, are not consistent with the experimental one very well, in the band the simulation results are lower than the experimental by about 3–5[Formula: see text]dB. But the simulation result of vertical particle velocity was not consistent with the experimental one, illustrating that the precision of the model might not be enough in the vertical direction.

Low frequency ambient noise modeling and comparison with field measurements in the South China Sea

2019 ◽  
Vol 148 ◽  
pp. 34-39 ◽  
Author(s):  
JianBo Zhou ◽  
Minhui Zhang ◽  
ShengChun Piao ◽  
Kashif Iqbal ◽  
Ke Qu ◽  
...  
Keyword(s):  
South China Sea ◽  
South China ◽  
Ambient Noise ◽  
Low Frequency ◽  
Field Measurements ◽  
The South China Sea ◽  
The South ◽  
Noise Modeling ◽  
China Sea

Analysis on vertical directivity of shallow‐water ambient noise in South China Sea

2004 ◽  
Vol 115 (5) ◽  
pp. 2508-2508
Author(s):  
Ruey‐Chang Wei ◽  
Hsiang‐Chih Chan ◽  
Po‐Chang Lin
Keyword(s):  
South China Sea ◽  
Shallow Water ◽  
South China ◽  
Ambient Noise ◽  
China Sea

Geoacoustic parameters inversion by ambient noise in South China Sea experiment of ASIAEX

2005 ◽  
Vol 117 (4) ◽  
pp. 2442-2442
Author(s):  
Ruey‐Chang Wei ◽  
Yao‐Hsien Kuo ◽  
Cheng‐Hung Chen ◽  
Hsiang‐Chih Chan
Keyword(s):  
South China Sea ◽  
South China ◽  
Ambient Noise ◽  
China Sea ◽  
Parameters Inversion
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