Experimental Determination of Acoustic Field Characteristics in a Natural Shallow Water Basin in Different Seasons of the Year

2018 ◽  
Vol 82 (11) ◽  
pp. 1411-1415 ◽  
Author(s):  
K. V. Dmitriev ◽  
A. S. Lipavskiy ◽  
I. A. Pankov ◽  
S. N. Sergeev
Keyword(s):  
Experimental Determination ◽  
Shallow Water ◽  
Acoustic Field ◽  
Water Basin ◽  
Different Seasons

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.

Experimental determination of a state equation for dissipative granular gases

1999 ◽  
Vol 96 (6) ◽  
pp. 1111-1116 ◽  
Author(s):  
E. Falcon ◽  
S. Fauve ◽  
C. Laroche
Keyword(s):  
Experimental Determination ◽  
State Equation ◽  
Granular Gases
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