Internal solitons in the ocean
Apel, J. R.
Ostrovsky, L. A.
Stepanyants, Y. A.
Lynch, James F.
MetadataShow full item record
KeywordTheoretical models and experimental observations of oceanic nonlinear internal waves; Internal wave effects on acoustic propagation; Internal solitary waves (solitons) in the ocean
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-deVries 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 waveforms, 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.
Showing items related by title, author, creator and subject.
Enhanced acoustic mode coupling resulting from an internal solitary wave approaching the shelfbreak in the South China Sea Chiu, Linus Y. S.; Reeder, D. Benjamin; Chang, Yuan-Ying; Chen, Chi-Fang; Chiu, Ching-Sang; Lynch, James F. (Acoustical Society of America, 2013-03)Internal waves and bathymetric variation create time- and space-dependent alterations in the ocean acoustic waveguide, and cause subsequent coupling of acoustic energy between propagating normal modes. In this paper, the ...
Analysis of internal wave induced mode coupling effects on the 1995 SWARM experiment acoustic transmissions Headrick, Robert H. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 1997-06)As part of the Shallow Water Acoustics in a Random Medium (SWARM) experiment , a sixteen element WHOI vertical line array (WVLA) was moored in 70 meters of water off the New Jersey coast. This array was sampled at ...
Racine, Brian S. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 1996-08)A field experiment was undertaken during July and August of 1995 aimed at understanding the interaction of acoustic signals with the internal wave field off the coast of New Jersey. As part of SWARM (Shallow Water Acoustics ...