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Energetics of Internal Solitary Waves in a Background Sheared Current : Volume 17, Issue 5 (08/10/2010)

By Lamb, K. G.

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Book Id: WPLBN0003984270
Format Type: PDF Article :
File Size: Pages 16
Reproduction Date: 2015

Title: Energetics of Internal Solitary Waves in a Background Sheared Current : Volume 17, Issue 5 (08/10/2010)  
Author: Lamb, K. G.
Volume: Vol. 17, Issue 5
Language: English
Subject: Science, Nonlinear, Processes
Collections: Periodicals: Journal and Magazine Collection (Contemporary), Copernicus GmbH
Historic
Publication Date:
2010
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications

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Lamb, K. G. (2010). Energetics of Internal Solitary Waves in a Background Sheared Current : Volume 17, Issue 5 (08/10/2010). Retrieved from http://hawaiilibrary.net/


Description
Description: Department of Applied Mathematics, University of Waterloo, Waterloo, Ontario, N2L 3G1, Canada. The energetics of internal waves in the presence of a background sheared current is explored via numerical simulations for four different situations based on oceanographic conditions: the nonlinear interaction of two internal solitary waves; an internal solitary wave shoaling through a turning point; internal solitary wave reflection from a sloping boundary and a deep-water internal seiche trapped in a deep basin. In the simulations with variable water depth using the Boussinesq approximation the combination of a background sheared current, bathymetry and a rigid lid results in a change in the total energy of the system due to the work done by a pressure change that is established across the domain. A final simulation of the deep-water internal seiche in which the Boussinesq approximation is not invoked and a diffuse air-water interface is added to the system results in the energy remaining constant because the generation of surface waves prevents the establishment of a net pressure increase across the domain. The difference in the perturbation energy in the Boussinesq and non-Boussinesq simulations is accounted for by the surface waves.

Summary
Energetics of internal solitary waves in a background sheared current

Excerpt
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