Effect of Seabed Topography Change on Sound Ray Propagation—A Simulation Study

¹ Department of Scientific Research, Dalian Navy Academy, Dalian, China

² Department of Scientific Research, Dalian Navy Academy, Dalian, China

³ College of Physical and Environmental Oceanography, Ocean University of China, Qingdao, China

Abstract

Variation of ocean environmental parameters is important to sound ray propagation. This article studies the problem of sound ray propagation in seawater by BELLHOP ray model. The sensitivities of sound ray propagation to the variations of seabed topography and depth of sound source by simulation. The results show that the depth variation of sound source is the main cause for emerging and disappearing of surface sound channel, accumulation area and deep sound channel. The deviation of sound ray propagation is in accordance with seabed topography change.

KeywordsSound Ray PropagationDistance CorrelationRay ModelSimulation

B. S. Liu and J. Y. Lei, “Hydroacoustics Theory,” 2nd Edition, Harbin Engineering University Press, Harbin, 2010.
J. Wang, J. G. Huang and J. Guan, “Wave Guide Modeling and Simulation for Underwater Acoustic Propagation,” Journal of System Simulation, Vol. 13, No. 1, 2001, pp. 37- 39.
Y. Z. Dong, X. M. Xu, P. X. Liu, et al., “Study on Modeling of Shallow Water Acoustic Channel and Its Applications,” Journal of System Simulation, Vol. 22, No. 1, 2010, pp. 47-55.
M. B. Porter and H. P. Bucher, “Gaussian Beam Tracing for Computing Ocean Acoustic Fields,” Journal of the Acoustical Society of America, Vol. 82, No. 4, 1987, pp. 1349-1359. doi:10.1121/1.395269
F. B. Jensen, W. A. Kuperman, M. B. Porter, et al., “Computational Ocean Acoustics,” American Institute of Phys- ics Press, College Park, 1944.
E. L. Hamilton, “Geoacoustic Modeling of the Sea Floor,” Journal of the Acoustical Society of America, Vol. 68, No. 5, 1980, pp. 1313-1340. doi:10.1121/1.385100

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Effect of Seabed Topography Change on Sound Ray Propagation—A Simulation Study

Abstract

References (6)