Effects of soliton internal waves with different amplitudes on sound propagation characteristics

Tang Junhui; Liang Chujin; Zhao Hangfang; Lin Feilong; Cui Zijian; Bi Weichuan

doi:10.12284/hyxb2024095

Volume 46 Issue 10

Oct. 2024

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Tang Junhui，Liang Chujin，Zhao Hangfang, et al. Effects of soliton internal waves with different amplitudes on sound propagation characteristics[J]. Haiyang Xuebao，2024, 46(10)：16–24 doi: 10.12284/hyxb2024095

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Effects of soliton internal waves with different amplitudes on sound propagation characteristics

doi: 10.12284/hyxb2024095

Tang Junhui^1
,,
Liang Chujin^{1, 2, 3
,
,},
Zhao Hangfang^{3, 4
,
,},
Lin Feilong¹,
Cui Zijian³,
Bi Weichuan¹

1.
State Key Laboratory of Satellite Ocean Environment Dynamics, Second Institute of Oceanography, Ministry of Natural Resources, Hangzhou 310012, China
2.
School of Ocean Science, Nanjing University of Information Science and Technology, Nanjing 210044, China
3.
School of Ocean Science, Zhejiang University, Hangzhou 310058, China
4.
College of Information Science and Electronic Engineering, Zhejiang University, Hangzhou 310058, China

Received Date: 2024-03-06
Rev Recd Date: 2024-07-30
Publish Date: 2024-10-30

Abstract

Abstract

Based on the stratification characteristics of the South China Sea and the finite depth theoretical equation, the two-dimensional sound velocity field under different amplitudes of soliton internal waves is reconstructed by using the temperature and salinity data measured by submersible moorings and WOA2023 climate states. Combined with the BELLHOP ray acoustic model, the sound propagation loss, the ray path, the sound ray arrival structure and so on are simulated under different amplitudes of soliton internal waves environment. The simulation results show that soliton internal waves will change the propagation path of the sound rays. When the sound rays pass through the center of internal wave from the sea surface to the sea bottom or from the sea bottom to the sea surface, the horizontal direction of the sound rays track will be offset towards the sound source and away from the sound source, respectively. The larger the amplitude of soliton internal wave, the larger the offset distance of the sound rays track. Soliton internal waves can also change the arrival structure of the sound rays, and the sound signal will propagate to the receiving point faster when there are soliton internal wave conditions at a specific receiving point.
- soliton internal waves,
- finite depth theory,
- BELLHOP,
- sound propagation characteristics

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References(28)

References

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