Acoustical Physics

, Volume 53, Issue 2, pp 197–204

Range dependence of the vertical structure of the sound field in the ocean

  • V. A. Zverev
  • G. K. Ivanova
Ocean Acoustics and Underwater Sound

Abstract

In the ocean without fluctuations, the sound field is calculated by the method of geometrical acoustics with allowance for purely water-path rays in a sound channel of canonical shape with a thickness of 4 km for distances of 500 and 2000 km. The sound field is determined as a sum of individual rays arriving at a given point with their own amplitudes and phases. It is shown that the vertical structure of the sound field consists of a number of caustics separated by regions with a quasi-random distribution of the field whose amplitude is much smaller than that in the caustics. At a fixed distance, the number of caustics is equal to the difference between the numbers of the ray turning points at the boundaries of the departure angle range. As the distance from the source increases, the number of caustics increases proportionally to distance.

PACS numbers

43.30.+m 43.20Dk 43.30.Cq 43.60.-c 

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References

  1. 1.
    P.F. Worcester, B. D. Cornuelle, M. A. Dzieciuch, et al., J. Acoust. Soc. Am. 105, 3185 (1999).CrossRefADSGoogle Scholar
  2. 2.
    F. D. Tappert and Xin. Tang, J. Acoust. Soc. Am. 99, 185 (1996).CrossRefADSGoogle Scholar
  3. 3.
    J. Simmen, S. M. Flatte, and G.-Yu. Wang, J. Acoust. Soc. Am. 102, 239 (1997).CrossRefADSGoogle Scholar
  4. 4.
    F. J. Beron-Vera, M. G. Brown, J. A. Colosi, et al., J. Acoust. Soc. Am. 114(3), 1226 (2003).CrossRefADSGoogle Scholar
  5. 5.
    A. L. Virovlyanskiĭ, in Ocean Acoustics. Proceedings of the 10th Workshop by Academician L.M. Brekhovskikh (GEOS, Moscow, 2004), pp. 51–56.Google Scholar
  6. 6.
    I. P. Smirnov, A. L. Virovlyansky, and G. H. Zaslavsky, J. Acoust. Soc. Am. 117, 1595 (2005).CrossRefADSGoogle Scholar
  7. 7.
    V. A. Zverev and G. K. Ivanova, Akust. Zh. 49, 632 (2003) [Acoust. Phys. 49, 535 (2003)].Google Scholar
  8. 8.
    V. A. Zverev, V. P. Ivanov, and G. K. Ivanova, in Ocean Acoustics. Proceedings of the 9th Workshop by Academician L.M. Brekhovskikh (GEOS, Moscow, 2002), pp. 128–131.Google Scholar
  9. 9.
    I. N. Didenkulov, V. A. Zverev, V. P. Ivanov, and G. K. Ivanova, Akust. Zh. 50, 783 (2004) [Acoust. Phys. 50, 647 (2004)].Google Scholar
  10. 10.
    V. A. Zverev and G. K. Ivanova, in Ocean Acoustics. Proceedings of the 10th Workshop by Academician L.M. Brekhovskikh (GEOS, Moscow, 2004), pp. 86–89.Google Scholar
  11. 11.
    V. A. Zverev and G. K. Ivanova, Akust. Zh. 51, 771 (2005) [Acoust. Phys. 51, 664 (2005)].Google Scholar
  12. 12.
    Sound Transmission Through a Fluctuating Ocean, S. Flatte, Ed. (Cambridge Univ. Press, Cambridge, 1979; Mir, Moscow, 1982).Google Scholar

Copyright information

© Pleiades Publishing, Ltd. 2007

Authors and Affiliations

  • V. A. Zverev
    • 1
  • G. K. Ivanova
    • 1
  1. 1.Institute of Applied PhysicsRussian Academy of SciencesNizhni NovgorodRussia

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