The specific resistance and three other secondary coefficients in the instantaneous integral energy equation describing the flow in the Øresund strait, are accurately estimated from over two years of high resolution measurements. Parameter variation due to stratification, effectively insulating the flow from the effect of bottom friction, is demonstrated and quantified. Also, parameter variation with the flow direction is quantified. Residual error dynamics is discussed and described. The relevance of an additional linear resistance term in the flow energy equation is discussed.

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