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© Woods Hole Oceanographic Institution © University of Washington |
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| Last updated May 2010 |
Horizontal reflection of a low-frequency sound signal from a moving nonlinear internal wave front
M. Badiey, J. F. Lynch, Y.-T. Lin, and B. G. Katsnelson
| Simultaneous measurements of acoustical and internal waves are reported while an internal wave approaches an acoustic track during the SW06 experiment. The incoming internal wave packet acts as a moving layer reflecting and refracting acoustic waves in the horizontal plane. The mechanism of this interaction is shown in recorded acoustic data on a vertical hydrophone array using a modal approach. It is shown that the wave front of internal waves behaves as selective filter, depending on the mode number and frequency of the broadband signal. In other words the reflection coefficient in horizontal plane depends on mode number and frequency. Experimental data analysis shows good agreement with the theory [Work supported by ONR 321OA.] |
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© Woods Hole Oceanographic Institution © University of Washington |
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| Last updated May 2010 |