Inversion of shallow water ambient noise data by means of differential evolution as a global search method

2006 ◽  
pp. 265-279
Author(s):  
Dick G. Simons ◽  
Camiel van Moll ◽  
Chris H. Harrison
Keyword(s):  
Differential Evolution ◽  
Shallow Water ◽  
Ambient Noise ◽  
Global Search ◽  
Search Method ◽  
Noise Data

Using Ambient Noise to Inverse Geo-Acoustic Parameters

2012 ◽  
Vol 588-589 ◽  
pp. 851-855
Author(s):  
Chun Xia Meng ◽  
Gui Juan Li ◽  
Liang Zhang
Keyword(s):  
Shallow Water ◽  
Ambient Noise ◽  
Theoretical Study ◽  
Ocean Surface ◽  
Ray Theory ◽  
Acoustic Parameters ◽  
Low Frequencies ◽  
Research Results ◽  
Noise Data ◽  
Stratified Ocean

This paper presents a theoretical study of the vertical coherence of ocean ambient noise as the source is the windy ocean surface on the ray theory. At low frequencies less than 2 kHz, the sensitivity of stratified fluid seabed to the vertical coherence of ambient noise in shallow water is analyzed under the condition of distance-irrespective stratified ocean. Using ambient noise data from Chinese north shallow water seabed geo-acoustics parameters are obtained, and the research results show that the inverted method is effective.

Extracting modal structure from vertical array ambient noise data in shallow water

1995 ◽  
Vol 98 (5) ◽  
pp. 2971-2971 ◽  
Author(s):  
Paul Hursky ◽  
William A. Kuperman ◽  
William S. Hodgkiss
Keyword(s):  
Shallow Water ◽  
Ambient Noise ◽  
Vertical Array ◽  
Modal Structure ◽  
Noise Data

Geo-Acoustic Parameters Inversion from Vertical Coherence Characteristic of Ambient Noise

2013 ◽  
Vol 385-386 ◽  
pp. 567-570
Author(s):  
Chun Xia Meng ◽  
Gui Juan Li ◽  
Liang Zhang
Keyword(s):  
Shallow Water ◽  
Acoustic Field ◽  
Relative Stability ◽  
Ambient Noise ◽  
Frequency Range ◽  
Shallow Sea ◽  
Acoustic Parameters ◽  
Different Seasons ◽  
Noise Data ◽  
Parameters Inversion

In shallow sea the wave of ambient noise contains the information of environment acoustic field. In theory, vertical coherence, which is one of the numerous ambient noise field characters, can be used to invert geo-acoustic parameters because of its relative stability. The ambient noise data were collected in two different seasons using two vertical-laid hydrophones in shallow water. Then acoustic parameters of semi-infinite space seabed are inversed from the vertical coherence of measured ambient noise in the frequency range of 100Hz~3 kHz. The predicted vertical coherence curve of ambient noise, which is computed using inversed parameters, agrees with the measured curve by comparison. The experiment results show that geo-acoustic parameters can be inversed effectively by the vertical coherence of ambient noise.

Analysis and Modeling of Ambient Noise in Shallow Water of Arabian Sea

2012 ◽  
Vol 2 (6) ◽  
pp. 271-272
Author(s):  
Sudhir Pal Singh Rawat ◽  
◽  
Dr. Arnab Das ◽  
Dr. H.G.Virani Dr. H.G.Virani ◽  
Dr. Y.K.Somayajulu Dr. Y.K.Somayajulu
Keyword(s):  
Shallow Water ◽  
Arabian Sea ◽  
Ambient Noise

scholarly journals Analysis of wind-driven ambient noise in a shallow water environment with a sandy seabed

2008 ◽  
Vol 124 (3) ◽  
pp. EL157-EL162 ◽  
Author(s):  
D. P. Knobles ◽  
S. M. Joshi ◽  
R. D. Gaul ◽  
H. C. Graber ◽  
N. J. Williams
Keyword(s):  
Shallow Water ◽  
Ambient Noise ◽  
Water Environment ◽  
Shallow Water Environment
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