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Although Gelhar cautioned against using the tabulated data for estimating dispersivity, this is exactly what's often done:

Gelhar et al., 1992 Dispersivity Data Tabulation, with estimation equations plotted.




This drawing shows two functions plotted over the data

Why is this not recommended? Because


Calculator icon The calculated values give some guidance on what might be an appropriate value of dispersivity, but do not replace site specific measurements nor calibrated parameter sets.


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