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Influence of Internal Waves on Underwater Acoustic Propagation

Author Affiliations

  • 1 Shoushtar Branch, Islamic Azad University, Shoushtar, IRAN

Res. J. Recent Sci., Volume 1, Issue (1), Pages 73-76, January,2 (2012)


The harmonic excitation is taken imperfect, i.e., with a random phase modulation due to Gaussian white noise, accounting for both chaotic and stochastic behavior. Simulated turbulence is represented using the potential theory line vortex approach. Simulations are conducted for long range propagation, 1000km, containing internal wave fields with added deterministic effects and are compared to those fields with non-deterministic properties. These results show that long range acoustic propagation has a very strong dependence on the intensity of deterministic fluctuations. Numerical analysis for short range propagation, 10km, was constructed for sound passage through the following perturbation scenarios: simulated turbulence, an internal wave field, and a field of internal waves and simulated turbulence combined.


  1. Simmon J. and Flatte S., Near-caustic behavior in a 270-km acoustical experiment Journal of the Acoustical Society of America, 105(6-1), 323-3244 (1999)
  2. Smith K., Brown M. and Tappert F., Acoustic ray chaos induced by mesoscale ocean structure Journal of the Acoustical Society of America, 91 (4-1), 1950-1959(1992)
  3. Colosi J., Flatte S. and Bracher, C., Internal wave effects on 1000-km oceanic acoustic pulse propagation Simulation and comparison with experiment Journal of the Acoustical Society of America, 96(1), 452-468 (1994)
  4. Zaslavsky G. and Abullaev S. Chaotic Transmission of waves and "cooling" of signals, Chaos, 7(1), 182-186 (1997)
  5. Simmen J., Flatte S., and Wang G., Wave front folding, chaos, and diffraction for sound propagation through ocean internal waves Journal of the Acoustical Society of America, 102(1), 235-255(1997)
  6. Wiercigroch M., Badiey M., Simmen J. and Cheng A., Non-Linear Dynamics of Underwater Acoustics, Journal of Sound and Vibration, 220(5), 771-786 (1999)
  7. Munk W., Sound Channel in an exponentially stratified ocean, with application to SOFAR Journal of the Acoustical Society of America, 55(2), 220-226 (1974)
  8. Brown, M. and Viechnicki J., Stochastic ray theory for long-range sound propagation in deep ocean environments Journal of the Acoustical Society of America, 104(4), 2090-2104 (1998)
  9. Brekhovskikh L., Fundamentals of Ocean Acoustics (G. Ecker, Ed.) Berlin, Germany Springer-Verlag (1982)