FUNDAMENTAL AREAS OF PHENOMENOLOGY(INCLUDING APPLICATIONS) |
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A Method of Measuring the In Situ Seafloor Sound Speed using Two Receivers with Warping Transformation |
LI Feng-Hua1**, ZHANG Bo1,2, GUO Yong-Gang1 |
1State Key Laboratory of Acoustics, Institute of Acoustics, Chinese Academy of Sciences, Beijing 100190 2University of Chinese Academy of Sciences, Beijing 100190
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Cite this article: |
LI Feng-Hua, ZHANG Bo, GUO Yong-Gang 2014 Chin. Phys. Lett. 31 024301 |
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Abstract We present a method of measuring the in situ superficial seafloor sound speed by using two receivers deployed vertically in sediment, based on the dispersion characteristic of normal modes in shallow water. Warping transformation is adopted to extract the first normal mode from the broadband propagation signals. Some experimental results which could validate the method are shown. One of the advantages of the method is that the seafloor sound speed can be solved directly from the relative vertical transmission loss of the first normal mode without the exact priori information of the environmental parameters such as the sound speed profile, the water-column depth and the source location.
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Received: 23 October 2013
Published: 28 February 2014
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PACS: |
43.30.Pc
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(Ocean parameter estimation by acoustical methods; remote sensing; imaging, inversion, acoustic tomography)
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43.30.Ma
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(Acoustics of sediments; ice covers, viscoelastic media; seismic underwater acoustics)
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[1] Jensen F B, Kuperman W A, Porter M B and Schmidt H 2011 Computational Ocean Acoustics 2nd edn (New York: Springer) chap 45 [2] Best A I, Huggett Q J and Harris A J K 2001 J. Acoust. Soc. Am. 110 695 [3] Stevenson I R, McCann C and Runciman P B 2002 Mar. Geophys. Res. 23 277 [4] Hamilton E L 1970 J. Geophys. Res. 75 4423 [5] Fu S S, Wilkens R H and Frazer L N 1996 J. Acoust. Soc. Am. 99 234 [6] Robb G B N, Best A I and Dix J K 2007 IEEE J. Ocean. Eng. 32 484 [7] Yang J, Tang D J and Williams K L 2008 J. Acoust. Soc. Am. 124 EL116 [8] Li F H and Zhang R H 2000 Acta Acust. 25 297 (in Chinese) [9] Peng H S and Li F H 2007 Chin. Phys. Lett. 24 1977 [10] Yang K D and Ma Y L 2009 IEEE Acta Phys. Sin. 58 1798 (in Chinese) [11] Li Z L and Zhang R H 2007 Chin. Phys. Lett. 24 471 [12] Bonnel J, Nicolas B, Mars J I and Walker S C 2010 J. Acoust. Soc. Am. 128 719 [13] Bonnel J and Chapman N R 2011 J. Acoust. Soc. Am. 130 EL101 [14] Li Z L and Zhang R H 2004 Chin. Phys. Lett. 21 1100 [15] Guo Y G, Li F H, Liu J J and Li Z L 2006 Chin. Phys. Lett. 23 2483 [16] Touzé G L, Nicolas B, Mars J and Lacoume J 2009 IEEE Trans. Signal Process. 57 1783 |
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