RT Journal Article SR Electronic(1) A1 Thanh, Luong Duy A1 Van Nghia, Nguyen A1 Van Do, Phan A1 Tien Du, Pham A1 Jougnot, DamienYR 2023 T1 A unified model for the permeability, electrical conductivity and streaming potential coupling coefficient in variably saturated fractured media JF Geophysical Prospecting, VO 71 IS 2 SP 279 OP 291 DO https://doi.org/10.1111/1365-2478.13295 PB European Association of Geoscientists & Engineers, SN 1365-2478, AB ABSTRACT We present a new unified model for the permeability, electrical conductivity and streaming potential coupling coefficient in variably saturated fractured media. For those, we conceptualize the fractured medium as a partially saturated bundle of parallel capillary slits with varying sizes. We assume that the fracture size distribution of the corresponding medium follows a fractal scaling law, which allows us to establish a pressure head‐saturation relationship based on the Laplace equation. We first describe the flow rate, the conduction current and the electrokinetic streaming current within a single fracture. Then, we upscale these properties at the scale of an equivalent fractured media partially saturated in order to obtain the relative permeability, the electrical conductivity and the streaming potential coupling coefficient. The newly proposed model explicitly depends on pore water chemistry, interface properties, microstructural parameters of fractured media and water saturation. Model predictions are in good agreement with both experimental and simulated data and with another model from the literature. The results of this work constitute a useful framework to estimate hydraulic properties and monitor water flow in fractured media., UL https://www.earthdoc.org/content/journals/10.1111/1365-2478.13295