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Frequency Dependence of Longitudinal Correlation Length inthe Yellow Sea |
| LI Feng-Hua, ZHANG Ren-He |
| National Laboratory of Acoustics, Institute of Acoustics, Chinese Academy of Sciences, Beijing 100080 |
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| Cite this article: |
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LI Feng-Hua, ZHANG Ren-He 2008 Chin. Phys. Lett. 25 2539-2541 |
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Abstract Spatial correlation coefficient is one of the most important parameters for the description of sound propagation in shallow water. Frequency dependence of the longitudinal correlation length is still an open topic. We observe in a shallow water experiment that the longitudinal correlation length in units of wavelength increases with the increase of frequency. This phenomenon has not been seen in the published papers. The theoretical analysis and numerical simulations indicate that the non-linear frequency relationship of the bottom attenuation is the main cause of this phenomenon.
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| Keywords:
43.30.Bp
43.30.Re
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Received: 19 February 2008
Published: 26 June 2008
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| PACS: |
43.30.Bp
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(Normal mode propagation of sound in water)
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43.30.Re
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(Signal coherence or fluctuation due to sound propagation/scattering in the ocean)
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[1] Carey W M and Cable P G 2000 Proc. Fifth EuropeConference on Underwater Acoustics (Lyon 10--13 July 2000) p 1049
[2] Gorodetskaya E Y, Malekhanvo A I, Sazontov A G andVdovicheva N K 2000 Proc. Fifth Europe Conference on UnderwaterAcoustics (Lyon 10--13 July 2000) p 1031
[3] Wang Q and Zhang R H 1992 J. Acoust. Soc. Am. 92 932
[4] Zhu R C and Guan D H 1992 J. Acoust. Soc. Am. 92 950
[5] Pasewark B H, Wolf S N, Orr M H and Lynch J F 2002 J.Acoust. Soc. Am. 112 2450
[6] Peng H S and Li F H 2006 Chin. Phys. Lett. 241977
[7] Hamilton E L 1980 J. Acoust. Soc. Am. 68 1313
[8] Stoll R D 1974 Physics of Sound in Marine Sediments(NewYork: Plenum) p 19
[9] Zhou J X, Zhang X Z, Rogers P H and Jacek J 1987 J.Acoust. Soc. Am. 82 2068
[10] Li F H and Zhang R H 2000 Chin. J. Acoust. 25 297 (in Chinese)
[11] Li Z L and Zhang R H 2004 Chin. Phys. Lett. 21 1100
[12] Li Z L, Zhang R H, Yang J, Li F H and Liu J J 2004 IEEE J. Oceanic Engin. 29 973 |
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