Advertisement

Cycle Distance in Guided Propagation

  • D. E. Weston
Part of the NATO Conference Series book series (NATOCS, volume 5)

Abstract

The concept of cycle distance is reviewed, drawing initially on recent studies by C T Tindle, S G Payne and the author. Note that in underwater acoustics the bottom loss and the cycle distance together control an important part of the attenuation, and this is the central theme of the work cited. For a given mode it is not easy to find a definition of cycle distance that is both precise and generally applicable; two new attempts are described here. The most successful of these is in terms of group velocity; and its implications, including those for bottom interaction, are still being examined.

Keywords

Group Velocity Acoustical Society Guide Propagation Underwater Acoustics Ocean Acoustics 
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.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1.
    C. T. Tindle, The equivalence of bottom loss and mode attenuation per cycle in underwater acoustics, J. Acoust. Soc. Am. 66, 250–255 (1979).CrossRefGoogle Scholar
  2. 2.
    D. E. Weston and C. T. Tindle, Reflection loss and mode attenuation in a Pekeris model, J. Acoust. Soc. Am. 66, 872–879 (1979).CrossRefGoogle Scholar
  3. 3.
    C. T. Tindle and D. E. Weston, Connection of acoustic beam displacement, cycle distances, and attenuations for rays and normal modes, submitted to the Journal of the Acoustical Society of America.Google Scholar
  4. 4.
    C.T. Tindle, D. E. Weston and S. G. Payne, Cycle distances and attenuation in shallow water, submitted to the Journal of the Acoustical Society of America.Google Scholar
  5. 5.
    D. E. Weston, Oblique reflection of inhomogeneous acoustic waves, submitted to the Journal of the Acoustical Society of America.Google Scholar
  6. 6.
    L. M. Brekhovskikh, “Waves in Layered Media”, Academic, New York (1960).Google Scholar
  7. 7.
    I. Tolstoy and C. S. Clay, “Ocean Acoustics”, McGraw Hill, New York (1966).Google Scholar
  8. 8.
    E. L. Murphy and J. A. Davis, Modified ray theory for bounded media, J. Acoust. Soc. Am. 56, 1747–1760 (1974).CrossRefGoogle Scholar

Copyright information

© Plenum Press, New York 1980

Authors and Affiliations

  • D. E. Weston
    • 1
  1. 1.Admiralty Underwater Weapons EstablishmentPortland, DorsetEngland

Personalised recommendations