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Sub-inertial Modulation of Nonlinear Kelvin Waves in the Coastal Zone : Volume 20, Issue 3 (07/06/2013)

By Stepanov, D. V.

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Book Id: WPLBN0003989157
Format Type: PDF Article :
File Size: Pages 8
Reproduction Date: 2015

Title: Sub-inertial Modulation of Nonlinear Kelvin Waves in the Coastal Zone : Volume 20, Issue 3 (07/06/2013)  
Author: Stepanov, D. V.
Volume: Vol. 20, Issue 3
Language: English
Subject: Science, Nonlinear, Processes
Collections: Periodicals: Journal and Magazine Collection, Copernicus GmbH
Publication Date:
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications


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Stepanov, D. V., & Novotryasov, V. V. (2013). Sub-inertial Modulation of Nonlinear Kelvin Waves in the Coastal Zone : Volume 20, Issue 3 (07/06/2013). Retrieved from

Description: V. I. Ilichev Pacific Oceanological Institute, Vladivostok, Russia. Observational evidence is presented for interaction between nonlinear internal Kelvin waves at the Ωt,i (where the Ωt is the semidiurnal frequency and the Ωi is the inertial frequency) and random oscillations of the background coastal current at the sub-inertial Ω frequency in the Japan/East Sea. Enhanced coastal currents at the sum Ω+ and difference ω-frequencies Ω±t,i ± Ω have properties of propagating Kelvin waves, which suggests permanent energy exchange from the sub-inertial band to the mesoscale Ω± band. This interaction may be responsible for a greater-than-predicted intensification, steepening and breaking of boundary-trapped Kelvin waves. The problem of interaction between the nonlinear Kelvin wave at the frequency Ω and the low-frequency narrowband noise with representative frequency Ω≪Ω is investigated using the theory of nonlinear weak dispersion waves.

Sub-inertial modulation of nonlinear Kelvin waves in the coastal zone

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