Inversion of the internal wave velocity using the normal-mode amplitude fluctuation of an underwater sound field

被引：0
|
作者：
Hu T. [1 ,2 ,3 ]
Wang Z. [1 ,2 ,3 ]
Guo S. [1 ,2 ]
Ma L. [1 ,2 ]
机构：
[1] Key Laboratory of Underwater Acoustic Environment, CAS, Beijing
[2] Institute of Acoustics, CAS, Beijing
[3] University of Chinese Academy of Sciences, Beijing
来源：
Harbin Gongcheng Daxue Xuebao/Journal of Harbin Engineering University | 2020年 / 41卷 / 10期
关键词：
Acoustic fluctuation; Acoustic inversion; Fluctuation period of normal mode; Internal tide; Nonlinear internal wave; Normal mode coupling; Propagation velocity; The Yellow Sea;
D O I：
10.11990/jheu.202007063
中图分类号：
学科分类号：
摘要：
In order to solve the problem that the acoustic inversion method of internal waves parameters lacks of effective experimental verification, this paper discusses the applicable conditions of relationship between nonlinear internal wave velocity and acoustic normal mode amplitude fluctuation period, which was inferred by Rouself et al., and proposes an acoustic inversion method for the propagation velocity of internal waves in multiple internal waves coexistence environment, such as internal tide and nonlinear internal wave. When nonlinear wave causes acoustic normal mode coupling, internal waves velocity is inversed by extracting the fluctuation period of single order acoustic normal mode. Using 2011 internal waves and the synchronously observed acoustic fluctuation data in the Yellow Sea, internal waves velocity is successfully inversed, and the feasibility of the proposed inversion method is verified under coexistence of internal tide and nonlinear internal wave. Copyright ©2020 Journal of Harbin Engineering University.
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页码：1518 / 1523
页数：5
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