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PhD comprehensive exam | David Deepwell, Mass transport by mode-2 internal solitary-like wavesExport this event to calendar

Wednesday, May 20, 2015 — 10:00 AM EDT

MC 5417

Candidate

David Deepwell , Applied Mathematics, University of Waterloo

Title

Mass transport by mode-2 internal solitary-like waves

Abstract

It is well understood that coherent, large amplitude internal waves are a common occurrence in the coastal oceans. Most waves are of a first mode vertical structure and have been studied extensively. Though less prevalent, mode-2 internal solitary waves have also been observed throughout many coastal regions and warrant further investigation. We present direct numerical simulations of mode-2 waves on a laboratory scale through the use of a lock-release mechanism. Special attention is placed on the dynamics responsible for effective mass transport. We find that the energetics of wave formation are directly associated with the stability of the wave core which further affects the capacity to which the wave may transport matter. Furthermore, the presence of a mode-1 wave-train behind the mode-2 wave removes energy from the mode-2 wave and accelerating its collapse.

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