Chin. Phys. Lett.  2008, Vol. 25 Issue (2): 582-585    DOI:
Original Articles |
Horizontal Correlation of Ambient Noise near a Sea Route
HE Li 1;LI Zheng-Lin1,2;ZHANG Ren-He1; PENG Zhao-Hui1
1National Laboratory of Acoustics, Institute of Acoustics, Chinese Academy of Sciences, Beijing 1000802Nanhai Laboratory of Acoustics, Institute of Acoustics, Chinese Academy of Sciences, Haikou 570206
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HE Li, LI Zheng-Lin, ZHANG Ren-He et al  2008 Chin. Phys. Lett. 25 582-585
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Abstract Ambient noise data measured in an experiment conducted near the sea route are analysed. It is found that at low frequency, the measured horizontal correlation coefficients at different separations oscillate much larger than
that predicted by the classical ambient noise model. The theoretical analyses show that the observed phenomenon is mainly caused by windy noise together with the discrete shipping noise nearby. An ambient noise model is proposed to include the effects caused by both the noise sources and can be used to forecast the ambient noise field near a sea route.
Keywords: 43.30.Nb      43.30.Re     
Received: 14 June 2007      Published: 30 January 2008
PACS:  43.30.Nb (Noise in water; generation mechanisms and characteristics of the field)  
  43.30.Re (Signal coherence or fluctuation due to sound propagation/scattering in the ocean)  
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LI Zheng-Lin
PENG Zhao-Hui
[1] Jenson F B, Kuperman W A, Porter M B and Schmidt H 1994 Computation of Ocean Acoustics (New York: AIP) chap 9 p 518
[2] Kuperman W A and Ingenito F 1980 J. Acoust. Soc. Am. 67 1988
[3] Zhang R H, Zhu B X, Wu G Q and Hou W L 1992 ActaAcustica 17 270 (in Chinese)
[4] Harrison C H 1996 J. Acoust. Soc. Am. 99 2055
[5] Harrison C H 1997 Appl. Acoust. 51 289
[6] Urick R J 1983 {\t Principles of Underwater Sound (NewYork: McGraw-Hill) chap 7 p 211
[7] Poter M B 1992 The KRAKEN Normal Mode Program(Washington DC: Naval Research Laboratory)
[8] Li Z L and Zhang R H 2007 Chin. Phys. Lett. 24471
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