Experimental study of under-ice acoustic propagation properties in the Arctic

Weng Jinbao; Yang Yanming; Wen Hongtao; Zhou Hongtao

doi:10.3969/j.issn.0253-4193.2019.03.008

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Weng Jinbao, Yang Yanming, Wen Hongtao, Zhou Hongtao. Experimental study of under-ice acoustic propagation properties in the Arctic[J]. Haiyang Xuebao, 2019, 41(3): 76-85. doi: 10.3969/j.issn.0253-4193.2019.03.008

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Weng Jinbao, Yang Yanming, Wen Hongtao, Zhou Hongtao. Experimental study of under-ice acoustic propagation properties in the Arctic[J]. Haiyang Xuebao, 2019, 41(3): 76-85. doi: 10.3969/j.issn.0253-4193.2019.03.008

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Experimental study of under-ice acoustic propagation properties in the Arctic

doi: 10.3969/j.issn.0253-4193.2019.03.008

Ocean Laboratory of Acoustics and Remote Sensing, Third Institute of Oceanography, Ministry of Natural Resources, Xiamen 361005, China

Received Date: 2018-02-28
Rev Recd Date: 2018-03-26

Abstract

Abstract

Under-ice acoustic propagation is studied based on the acoustic propagation experiment data acquired on the Arctic on 6th August 2017. Using Burke-Twersky (BT) model and ray theory, multipath arrival structure of under-ice sound propagation, the phenomenon of rapid attenuation of received sound intensity, and low temporal correlation coefficient are analyzed and explained. The experimental results show that the received signal is consist by small-angle multiple-reversals sound rays, sound rays with one bottom reflection and sound rays with twice bottom reflection. And the intensity of small-angle multiple-reversals sound rays is significantly greater than sound rays with bottom reflection. The movement of experimental ice station causes the rapid attenuation of sound propagation signal's intensity and correlation during the experiment, and the maximum of the intensity attenuation can be as great as 20 dB. The conclusion above is verified by simulation.
- Arctic acoustics,
- under-ice acoustic experiment,
- under-ice acoustic modeling

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References(31)

References

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