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

• Autorzy: Badiey M. , Katsnelson B. , Lynch J. , Pereselkov S. , Siegmann W.
• 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

EN

3D sound; SWARM'95 experiment; acoustic

• Wydawca: Polskie Towarzystwo Akustyczne. Oddział Gdański
• Czasopismo: Hydroacoustics
• Rocznik: 2003
• Tom: Vol. 6
• Strony: 101--112
• Opis fizyczny: Bibliogr. 5 poz., rys.

Twórcy

autor

Badiey M.

• University of Delaware, Newark, USA

autor

Katsnelson B.

• Voronezh State University, Voronezh, Russia

autor

Lynch J.

• Woods Hole Oceanography Institute, Woods Hole, USA

autor

Pereselkov S.

• Voronezh State University, Voronezh, Russia

autor

Siegmann W.

• 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.