AN OSCILLATION PHENOMENON OF REVERBERATION IN THE SHALLOW WATER WITH A THERMOCLINE |
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Authors: | F LIG JIN R ZHANGJ LIU L GUO |
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Institution: | a National Laboratory of Acoustics, Chinese Academy of Science, 2712, Beijing, 100080, Chinaf1lfh@farad.ioa.ac.cnf1b Department of Physics, Tsinghua University, Beijing, 100084, China |
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Abstract: | An oscillation phenomenon of the reverberation intensity was observed in a recent shallow water reverberation experiment. This phenomenon cannot be explained by the widely used incoherent reverberation theory. In this paper, to explain the observed oscillation phenomenon, the modal interference of reverberation in the shallow water with a thermocline is discussed on the basis of the ray-mode theory. The theoretical analysis and numerical results show that modal interference can cause the regular oscillation phenomenon of the reverberation intensity, and the oscillation phenomenon of the reverberation intensity can be used to test different reverberation models. |
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