Physical properties of turbulent benthic boundary layers generated by internal waves

Charles Lemckert, Jason Antenucci, Angelo Saggio, Jorg Imberger

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Physical properties of active turbulent benthic boundary layers (TBBL) generated by basin scale internal waves were studied within a Northern hemisphere thermally stratified lake. A microstructure profiler was used to measure the nature of the turbulence within the TBBLs while a series of thermistor chains were used to monitor the thermal structure of the lake. It was observed that a wind-driven anticlockwise diurnal-period vertical mode one Kelvin wave generated large scale motions within the water column, and that the interactions between this wave and the sloping lakebed induced TBBLs. A simple model, based on potential energy change and boundary shearing, was shown to describe the mean TBBL thickness.

Original languageEnglish
Pages (from-to)58-69
Number of pages12
JournalJournal of Hydraulic Engineering
Issue number1
Publication statusPublished - Jan 2004
Externally publishedYes


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