Abstract
Vertical oxygen profiles of lakes are typically insensitive to the rate of reaeration across the air-water interface when non-eddy diffusivity dominates epilimnetic waters. Steady-state models are developed to analyze the dependency of oxygen regimes upon the reaeration coefficient, the diffusivity coefficient, and the rate of oxygen consumption. For example, an oxygen model is insensitive to a reaeration coefficient of greater than 1 m/d if the vertical diffusivity coefficient is less than 1 m2/d. Other combinations can be analyzed using the models developed.
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