Scaling oxygen microprofiles at the sediment interface of deep stratified waters

Robert Schwefel, Miki Hondzo, Alfred Wüest, Damien Bouffard

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16 Scopus citations


Dissolved oxygen microprofiles at the sediment-water interface of Lake Geneva were measured concurrently with velocities 0.25 to 2 m above the sediment. The measurements and scaling analyses indicate dissolved oxygen fluctuations and turbulent fluxes in exceedance of molecular diffusion in the proximity of the sediment-water interface. The measurements allowed the parameterization of the turbulent diffusion as a function of the dimensionless height above the sediment and the turbulence above the sediment-water interface. Turbulent diffusion depended strongly on the friction velocity and differed from formulations reported in the literature that are based on concepts of turbulent and developed wall-bounded flows. The dissolved oxygen microprofiles and proposed parameterization of turbulent diffusion enable a foundation for the similarity scaling of oxygen microprofiles in proximity to the sediment. The proposed scaling allows the estimation of diffusive boundary layer thickness, oxygen flux, and oxygen microprofile distribution in the near-sediment boundary layer.

Original languageEnglish (US)
Pages (from-to)1340-1349
Number of pages10
JournalGeophysical Research Letters
Issue number3
StatePublished - Feb 16 2017

Bibliographical note

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©2017. American Geophysical Union. All Rights Reserved.


  • bottom boundary layer
  • limnology
  • microprofiling
  • sediment oxygen uptake


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