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The Seamount as a Diffracting Body

  • Herman Medwin
  • Robert P. SpauldingJr.
Part of the NATO Conference Series book series (NATOCS, volume 5)

Abstract

Diffraction over a seamount has been studied by experiments with a three-dimensional physical model of DICKENS seamount. When laboratory diffraction and scattering data are scaled to the ocean and added to absorption and refraction losses at sea, there is excellent agreement with ocean experiments reported by Ebbeson et al. (J. Acoust. Soc. Am. 64, S76 (1978). Both the magnitude and the frequency dependence of the shadowing at sea are predicted over a decade of frequencies.

Keywords

Propagation Loss Wedge Angle Central Path Diffraction Loss Sound Track 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

  1. 1.
    G. R. Ebbeson, J. M. Tborleifson and R.G. Turner, “Shadowing of sound propagation by a seamount in the northeast Pacific”, J. Acoust. Soc. Am. 64, S76 (1978).CrossRefGoogle Scholar
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    D. A. Nutile and A. N. Guthrie, “Acoustic shadowing by seamounts”, J. Acoust. Soc. Am. 66, 1813–1817 (1979).CrossRefGoogle Scholar
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    R. P. Spaulding, Jr., “Physical modeling of sound shadowing by seamounts”, M.S. Thesis, Naval Postgraduate School, Monterey, CA 93940, (1979).Google Scholar
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    H. Medwin and R. Spaulding, “Shadowing by seamounts”, J. Acoust. Soc. Am. 66, S76, (1979).CrossRefGoogle Scholar
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    See also I. Tolstoy “Wave Propagation”, McGraw-Hill Book Co., Inc., New York, (1973).Google Scholar
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    H. Medwin, “Shadowing by finite noise barriers”, submitted for publication in J. Acoust. Soc. Am. (1980).Google Scholar
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    F. D. Tappert, “The parabolic approximation method”, Ch. V in Lecture Notes in Physics, 70, Wave Propagation and Underwater Acoustics, ed. by J. B. Keller and J. S. Papadakis, Springer-Verlag, New York (1977).Google Scholar
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    C. S. Clay and H. Medwin, “Acoustical Oceanography”, Wiley, NewYork (1977). (Ch. 10, Scattering and Reflection of Sound at Rough Surfaces).Google Scholar
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Copyright information

© Plenum Press, New York 1980

Authors and Affiliations

  • Herman Medwin
    • 1
  • Robert P. SpauldingJr.
    • 1
    • 2
  1. 1.Physics and Chemistry DepartmentNaval Postgraduate SchoolMontereyUSA
  2. 2.LT., U.S. NavyUSA

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