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The generation and evolution of internal solitary waves

Liu, Zihua; (2020) The generation and evolution of internal solitary waves. Doctoral thesis (Ph.D), UCL (University College London). Green open access

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Abstract

This thesis is mainly concerned with mode-1 and mode-2 oceanic internal solitary waves. Theoretical analysis and numerical simulation are used to investigate the generation and evolution of these waves. The thesis is organised as follows. In chapter 2, we introduce the mathematical formulation used throughout the thesis. In chapter 3, we study the evolution of mode-1 internal solitary waves through an ocean current background, employing the variable-coefficient Korteweg-de Vries equation by concerning the effect of a background current. In chapter 4, we examine the possible generation of mode-2 waves by the interaction of mode-1 waves with topography, both in an ideal three-layer fluid system, a smooth density stratification and in two realistic oceanic settings, using a coupled linear long wave theory with mode coupling through topography, combined with evolution using a Korteweg-de Vries model. In chapter 5, we investigate the resonant coupling of mode-1 and mode-2 internal waves by topography, using a coupled Korteweg-de Vries model. In chapter 6, we present the interaction of a mode-1 internal solitary wave with a step topography with the generation of both mode-1 and mode-2 waves.

Type: Thesis (Doctoral)
Qualification: Ph.D
Title: The generation and evolution of internal solitary waves
Event: UCL (University College London)
Open access status: An open access version is available from UCL Discovery
Language: English
Additional information: Copyright © The Author 2020. Original content in this thesis is licensed under the terms of the Creative Commons Attribution 4.0 International (CC BY 4.0) Licence (https://creativecommons.org/licenses/by/4.0/). Any third-party copyright material present remains the property of its respective owner(s) and is licensed under its existing terms. Access may initially be restricted at the author’s request.
UCL classification: UCL
UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Chemical Engineering
URI: https://discovery.ucl.ac.uk/id/eprint/10110130
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