Internal solitons in the ocean and their effect on underwater sound
Article
Article Title | Internal solitons in the ocean and their effect on underwater sound |
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ERA Journal ID | 1297 |
Article Category | Article |
Authors | Apel, John R. (Author), Ostrovsky, Lev A. (Author), Stepanyants, Yury A. (Author) and Lynch, James F. (Author) |
Journal Title | The Journal of the Acoustical Society of America |
Journal Citation | 121 (2), pp. 695-722 |
Number of Pages | 28 |
Year | 2007 |
Place of Publication | Melville, NY, USA |
ISSN | 0001-4966 |
1520-8524 | |
Digital Object Identifier (DOI) | https://doi.org/10.1121/1.2395914 |
Abstract | Nonlinear internal waves in the ocean are discussed (a) from the standpoint of soliton theory and (b) from the viewpoint of experimental measurements. First, theoretical models for internal solitary waves in the ocean are briefly described. Various nonlinear analytical solutions are treated, commencing with the well-known Boussinesq and Korteweg–de Vries equations. Then certain generalizations are considered, including effects of cubic nonlinearity, Earth's rotation, cylindrical divergence, dissipation, shear flows, and others. Recent theoretical models for strongly nonlinear internal waves are outlined. Second, examples of experimental evidence for the existence of solitons in the upper ocean are presented; the data include radar and optical images and in situ measurements of wave forms, propagation speeds, and dispersion characteristics. Third, and finally, action of internal solitons on sound wave propagation is discussed. This review paper is intended for researchers from diverse backgrounds, including acousticians, who may not be familiar in detail with soliton theory. Thus, it includes an outline of the basics of soliton theory. At the same time, recent theoretical and observational results are described which can also make this review useful for mainstream oceanographers and theoreticians. |
Keywords | Korteweg-de Vries equation; underwater acoustic propagation; solitons; ocean waves |
ANZSRC Field of Research 2020 | 490409. Ordinary differential equations, difference equations and dynamical systems |
370803. Physical oceanography | |
510301. Acoustics and acoustical devices; waves | |
Public Notes | Files associated with this item cannot be displayed due to copyright restrictions. |
Byline Affiliations | Johns Hopkins University, United States |
National Oceanic and Atmospheric Administration, United States | |
Australian Nuclear Science and Technology Organisation | |
Woods Hole Oceanographic Institution, United States |
https://research.usq.edu.au/item/9z309/internal-solitons-in-the-ocean-and-their-effect-on-underwater-sound
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