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3D sound intensity variability in shallow water in presence of internal waves in SWARM'95 experiments

Treść / Zawartość
Identyfikatory
Warianty tytułu
Języki publikacji
EN
Abstrakty
EN
Broadband shot signal data are analyzed from the SWARM'95 experiment to investigate acoustic variability in presence of internal solitons. A 10 to 15 minute temporal variations in the intensity of the received signals were observed. These temporal variations are azimuthally dependent on variability of water column in the presence of internal solitary waves. These fluctuations should be explained by significant horizontal refraction (3D-effects) taking place when orientation of acoustic track is close to direction of the wave front of internal solitons. Analysis on the base of both equation of vertical modes/horizontal rays and PE in horizontal plane is carried out, good agreement between theoretical calculations and experimental data is obtained.
Słowa kluczowe
Czasopismo
Rocznik
Tom
Strony
101--112
Opis fizyczny
Bibliogr. 5 poz., rys.
Twórcy
autor
  • University of Delaware, Newark, USA
  • Voronezh State University, Voronezh, Russia
autor
  • Woods Hole Oceanography Institute, Woods Hole, USA
  • Voronezh State University, Voronezh, Russia
autor
  • Renseller Polytechnical Insitute, Troy, USA
Bibliografia
  • 1. M.Badiey, Y.Mu, J.Lynch, J.Apel, S.Wolf Temporal and azimuthal dependence ofsound propagation in shallow water with internal waves. IEEE Journal of Oceanie Engineering, v.27, NI, p.117-129, 2002.
  • 2. J.R.Apel, M.Badiey, C-S.Chiu, S.Finette, R.headrick, J.Kemp, J.Lynch, A .Newhall, M.Orr, B.Pasewark, D.Tielburger, ATurgut., K.v.d. Heydt, S.Wolf An overview ofthe SWARM 95 shallow water internal wave acoustic seattering experiment, IEEE Journal of Oceanie Engineering, v.22, N3, p.465-500, 1997.
  • 3. H. Weinberg R.B. Barridge R.B. Horizontal ray theory for ocean acoustics. J. Acoust. Soc. Am. v.55, pp.63-79 ,1974.
  • 4. F.D. Tappert in Wave Propagatio and Underwater Acoustics: Lecture Notes in Physics., Ed. By J.B.Keller and J.S.Papadakis Vol.70, Chap.S, pp 224-287, Springer, New York, 1977.
  • 5. B.G. Katsnelson , S.A Pereselkov Low-frequency horizontal acoustic refraction caused by internal wave solitons in a shallow sea. Acoustical physics, 2000, V.46, N6, pp.774- 788,2000.
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-2be31e5b-1c98-4f79-8b2a-397d3e7acdbc
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