Results 141 to 150 of about 230,864 (310)

Quantification and Analysis of Hydrograph Behavior Using Groundwater Signatures

open access: yesGroundwater, EarlyView.
Abstract The study of hydraulic head changes over time is a common task for groundwater hydrologists. Groundwater signatures are numerical metrics, or statistical aggregates, that quantify the behavior observed in hydraulic head hydrographs. Signatures can be helpful in a number of classical hydrological tasks, such as hydrograph classification ...
Raoul A. Collenteur   +2 more
wiley   +1 more source

Wellbore Skin: Why Its Presence and Properties Are So Difficult to Predict

open access: yesGroundwater, EarlyView.
Abstract The presence of positive wellbore skin, that is, deposits of fine‐grained particles from the drilling fluid on the borehole wall, significantly affects the efficiency of water wells. Previous studies of skin samples have shown a significant variability in typology, thickness, and composition but were largely unable to explain the differences ...
Georg J. Houben   +6 more
wiley   +1 more source

A Data‐Driven Simplified Nernst Equation for Estimating Reduction Potentials in Groundwater from pH and Temperature

open access: yesGroundwater, EarlyView.
Abstract Reduction potentials of redox couples are fundamental for understanding subsurface geochemistry and guiding water resource exploration and management. Reduction potentials are routinely calculated with the Nernst equation, which requires detailed chemical composition data and complex speciation modeling—factors that limit its application in ...
Gordon Bowman   +3 more
wiley   +1 more source

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