Surficial sediment sound speed estimation from wide-angle multipath arrivals

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2022-11
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Chiu, Linus Y. S.
 Lin, Ying-Tsong
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116001_1_online.pdf (2.06 MB)
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https://hdl.handle.net/1912/66169
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https://doi.org/10.1121/10.0015043
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10.1121/10.0015043
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Abstract
Multipath acoustic arrivals on fixed receivers from a moving source in an underwater waveguide include wide-angle bottom reflections that are affected by sediment properties. Hence, one can use them as input data for seabed geoacoustic parameter estimation. In this study, the effects of seabed properties on such measurements are theoretically analyzed. The result shows that one can utilize time delays and source distances at the critical angle points of multipath arrivals to determine the sediment sound speed. The effect of sediment attenuation is also discussed, and the proposed method is demonstrated with experimental data.
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© The Author(s), 2022. This article is distributed under the terms of the Creative Commons Attribution License. The definitive version was published in Chiu, L., & Lin, Y.-T. Surficial sediment sound speed estimation from wide-angle multipath arrivals. JASA Express Letters, 2(11), (2022): 116001, https://doi.org/10.1121/10.0015043.
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Chiu, L., & Lin, Y.-T. (2022). Surficial sediment sound speed estimation from wide-angle multipath arrivals. JASA Express Letters, 2(11), 116001.
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Applied Ocean Physics and Engineering (AOP&E)
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