We analyze measurements, conceptual pictures, and mathematical models of flow and
transport phenomena in fractured rock systems. Fractures and fracture networks are key …

While gravity fingering of water in unsaturated sands has been demonstrated and studied
under constrained laboratory conditions, its significance under field conditions in the vadose …

Fracture transmissivity and detailed aperture fields are measured in analog fractures
specifically designed to evaluate the utility of the Reynolds equation. We employ a light …

Precipitation recharge results from the direct infiltration of precipitation over the landscape.
Since it occurs over vast areas of land even a low precipitation recharge rate can still …

We designed and conducted experiments in a heterogeneous sand pack where gravity‐
destabilized nonwetting phase invasion (CO2 and trichloroethylene) could be recorded …

Flow through a natural fracture crossing unsaturated chalk in an arid region was
investigated in a field experiment using a specially designed experimental setup. The setup …

Fingering, nonmonotonicity, fragmentation, and pulsation within gravity/buoyant destabilized
two‐phase/unsaturated flow systems has been widely observed with examples in …

Two-phase flow through fractured media is important in petroleum, geothermal, and
environmental applications. However, the actual physics and phenomena that occur inside …

We conducted two laboratory experiments at the meter scale in which water was applied to
the top of an initially dry, uncemented wall composed of porous bricks. One experiment …

Surfactant‐enhanced aquifer remediation is an emerging technology for aquifers
contaminated with nonaqueous phase liquids (NAPLs). A two‐dimensional micromodel and …