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Article

The Effect of Mesoscale Eddy on the Characteristic of Sound Propagation

by 1,2,3, 1,2,3, 1,2,3,*, 1,2,3, 1,2,3 and 1,2,3
1
Acoustic Science and Technology Laboratory, Harbin Engineering University, Harbin 150001, China
2
Key Laboratory of Marine Information Acquisition and Security, Ministry of Industry and Information Technology, Harbin Engineering University, Harbin 150001, China
3
College of Underwater Acoustic Engineering, Harbin Engineering University, Harbin 150001, China
*
Author to whom correspondence should be addressed.
Academic Editor: Grigory Ivanovich Dolgikh
J. Mar. Sci. Eng. 2021, 9(8), 787; https://doi.org/10.3390/jmse9080787
Received: 15 June 2021 / Revised: 9 July 2021 / Accepted: 17 July 2021 / Published: 22 July 2021
(This article belongs to the Special Issue Sea Level Fluctuations)
A mesoscale eddy is detected and tracked in the western North Pacific region. Within the life cycle of the cyclonic eddies, the intensities of eddies make a difference. Satellite images indicate the oceanic eddy keeps westward-moving until it disappears. Oceanographic and acoustic characteristics of the eddy are studied. The acoustic energy distribution results from the different intensity of both modelled eddy and measured eddy are calculated. With sound propagation through the cyclonic eddy and anticyclonic eddy, the position of convergence zone moves away from and towards the acoustic source compared with the sound propagation through background hydrography. The coupling coefficient of different orders of normal modes changes significantly. The closer to the centre of the eddy, the stronger the coupling coefficient. View Full-Text
Keywords: mesoscale eddy; parabolic equation; normal mode mesoscale eddy; parabolic equation; normal mode
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MDPI and ACS Style

Liu, J.; Piao, S.; Gong, L.; Zhang, M.; Guo, Y.; Zhang, S. The Effect of Mesoscale Eddy on the Characteristic of Sound Propagation. J. Mar. Sci. Eng. 2021, 9, 787. https://doi.org/10.3390/jmse9080787

AMA Style

Liu J, Piao S, Gong L, Zhang M, Guo Y, Zhang S. The Effect of Mesoscale Eddy on the Characteristic of Sound Propagation. Journal of Marine Science and Engineering. 2021; 9(8):787. https://doi.org/10.3390/jmse9080787

Chicago/Turabian Style

Liu, Jiaqi, Shengchun Piao, Lijia Gong, Minghui Zhang, Yongchao Guo, and Shizhao Zhang. 2021. "The Effect of Mesoscale Eddy on the Characteristic of Sound Propagation" Journal of Marine Science and Engineering 9, no. 8: 787. https://doi.org/10.3390/jmse9080787

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