Hydrodynamic control of sediment-water fluxes
Combined in situ measurements of bottom boundary-layer turbulence and the diffusive oxygen fluxes at the sediment water interface were conducted in a medium-sized lake. The internal seiche driven periodic forcing produced an oscillatory boundary layer featuring distinct deviations from steady-state law-of-the-wall theory such as a pronounced phase lag between the current velocity and the turbulent dissipation of 1.5 hours. The oxygen flux into the sediment was controlled by a diffusive boundary layer, whose thickness was strongly affected by the periodic bottom boundary layer turbulence.
Keywords: - Abteilung_SURF_2004; - Abteilung_SURF
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Record created on 2013-06-28, modified on 2016-08-09