| FUNDAMENTAL AREAS OF PHENOMENOLOGY(INCLUDING APPLICATIONS) |
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Effect of Source's Height on Air-to-Water Sound Transmission with a Small-Scale Rough Sea Surface |
| ZHANG Ling-Shan1,2**, PENG Zhao-Hui1 |
1State Key Laboratory of Acoustics, Institute of Acoustics, Chinese Academy of Sciences, Beijing 100190
2University of Chinese Academy of Science, Beijing 100190
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| Cite this article: |
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ZHANG Ling-Shan, PENG Zhao-Hui 2014 Chin. Phys. Lett. 31 094302 |
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Abstract A self-consistent perturbation approach is presented for analyzing the effect of the airborne source's height on the air-to-water sound transmission in shallow water with a randomly rough sea surface. It is shown in early researches that, in shallow water with a smooth sea surface, the airborne source's height mostly affects the phase of the sound field and barely influences the amplitude. However, in shallow water with a rough sea surface, few researches about such a problem have been published. In this work, the sound fields in shallow water with a randomly rough sea surface induced by an airborne source at different heights are calculated by a self-consistent perturbation approach. The numerical simulation results show that the fluctuation of the scattered field decreases as the source's height increases, in contrast, the averaged energy of the total field is hardly influenced by the source's height in the statistical sense.
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Published: 22 August 2014
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| PACS: |
43.20.Bi
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(Mathematical theory of wave propagation)
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43.20.Fn
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(Scattering of acoustic waves)
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43.30.Gv
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(Backscattering, echoes, and reverberation in water due to combinations of boundaries)
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43.30.Hw
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(Rough interface scattering)
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