Search Results - "Nieber, J. L."

Field infiltration measurements in grassed roadside drainage ditches: Spatial and temporal variability by Ahmed, Farzana, Gulliver, John S., Nieber, J.L.

“…•722 infiltration measurements were taken in six grassed swales.•Field saturated hydraulic conductivity (Kfs) values varied from 0.75cm/h to 15.5cm/h.•High…”
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Physics of water repellent soils by Bauters, T.W.J, Steenhuis, T.S, DiCarlo, D.A, Nieber, J.L, Dekker, L.W, Ritsema, C.J, Parlange, J.Y, Haverkamp, R

“…Although it is generally well known that water repellent soils have distinct preferential flow patterns, the physics of this phenomenon is not well understood…”
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Modeling the effects of nonlinear equilibrium sorption on the transport of solute plumes in saturated heterogeneous porous media by Abulaban, A., Nieber, J.L.

“…Transport of sorbing solutes in 2D steady and heterogeneous flow fields is modeled using a particle tracking random walk technique. The solute is injected as…”
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Modeling Internal Erosion Processes in Soil Pipes: Capturing Geometry Dynamics by Nieber, J.L., Wilson, G.V., Fox, G.A.

“…Core IdeasSoil pipes are important features contributing to nonuniform flow in the vadose zone.Soil pipe flow and internal erosion is modeled with coupled flow…”
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Hydrologic connectivity and threshold behavior of hillslopes with fragipans and soil pipe networks by Wilson, G.V., Nieber, J.L., Fox, G.A., Dabney, S.M., Ursic, M., Rigby, J.R.

“…Many concepts have been proposed to explain hydrologic connectivity of hillslopes with streams. Hydrologic connectivity is most often defined by qualitative…”
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Impacts of drainage activities for clay soils on hydrology and solute loads to surface water by Eertwegh, G.A.P.H. van den, Nieber, J.L, Louw, P.G.B. de, Hardeveld, H.A. van, Bakkum, R

“…Several extended field‐monitoring programmes were set up in the Netherlands to study hydrological and surface water quality impacts of agricultural drainage…”
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Compaction Effect on the Gas Diffusion Coefficient in Soils by Xu, Xia, Nieber, J. L., Gupta, S. C.

“…Gas diffusion is important in determining the aeration status of soils for crop production and in providing estimates of transport of volatile chemicals at…”
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Modeling plume behavior for nonlinearly sorbing solutes in saturated homogeneous porous media by Abulaban, A., Nieber, J.L., Misra, D.

“…Transport of a sorbing solute in a two-dimensional steady and uniform flow field is modeled using a particle tracking random walk method. The solute is…”
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Numerical simulation of experimental gravity-driven unstable flow in water repellent sand by Nieber, J.L, Bauters, T.W.J, Steenhuis, T.S, Parlange, J.Y

“…Laboratory experiments related to gravity-driven unstable flows in water repellent porous media contained in two-dimensional chambers have been reported…”
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Characterizing Macropores in Soil by Computed Tomography by Warner, G. S., Nieber, J. L., Moore, I. D., Geise, R. A.

“…Cross sections of a 203‐mm diam. soil core taken from a site under Kentucky bluegrass (Poa pratensis L.) were scanned using x‐ray computed tomography (CT) to…”
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Network modeling of diffusion coefficients for porous media. I. Theory and model development by Steele, D.D. (North Dakota State Univ., Fargo, ND.), Nieber, J.L

“…Gas diffusion often dominates constituent transport in porous media and is dependent on pore geometry, water content, and water distribution in a porous…”
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Modeling gravity driven unstable flow in a water repellent soil by Nguyen, H.V, Nieber, J.L, Ritsema, C.J, Dekker, L.W, Steenhuis, T.S

“…One mechanism for the initiation of unstable flow in porous media is a condition of hydrophobicity of the solid phase. Recent continuous and nondestructive…”
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Effect of tensiometer cup size on field soil water tension variability by Hendrickx, J.M.H, Nieber, J.L, Siccama, P.D

“…Reliable estimates of soil water tension in field soils using few tensiometers are often difficult to obtain because of the large spatial variability of soil…”
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Stability analysis of gravity-driven infiltrating flow by Egorov, Andrey G., Dautov, Rafail Z., Nieber, John L., Sheshukov, Aleksey Y.

“…Stability analysis of gravity‐driven unsaturated flow is examined for the general case of Darcian flow with a generalized nonequilibrium capillary…”
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Network modeling of diffusion coefficients for porous media. II. Simulations by Steele, D.D. (North Dakota State Univ., Fargo, ND.), Nieber, J.L

“…Gas diffusion often dominates constituent transport in porous media (PM) and is dependent on pore geometry, water content, and water distribution in PM…”
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Modeling and field evidence of finger formation and finger recurrence in a water repellent sandy soil by Ritsema, Coen J., Dekker, Louis W., Nieber, John L., Steenhuis, Tammo S.

“…With prolonged rainfall, infiltrating wetting fronts in water repellent soils may become unstable, leading to the formation of high‐velocity flow paths, the…”
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Groundwater-supported evapotranspiration within glaciated watersheds under conditions of climate change by Cohen, Denis, Person, Mark, Daannen, Ronnie, Locke, Sharon, Dahlstrom, Dave, Zabielski, Victor, Winter, Thomas C., Rosenberry, Donald O., Wright, Herb, Ito, Emi, Nieber, John L., Gutowski, William J.

“…This paper analyzes the effects of geology and geomorphology on surface-water/-groundwater interactions, evapotranspiration, and recharge under conditions of…”
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Soil-macropore and layer influences on saturated hydraulic conductivity measured with borehole permeameters by Wu, L, Swan, J.B, Nieber, J.L, Allmaras, R.R

“…The borehole permeameter technique can produce erratic saturated hydraulic conductivity (K(sat)) in soils with macropores and abrupt layers because operating…”
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Improvements in Infiltration Rates of Compacted Soil with Tillage and Compost by Adekola, L, Olson, N. C, Schmalle, G, Nieber, J. L, Gulliver, J. S

“…Soils on residential developments typically have lower stormwater infiltration rates than the soils they replace. This is due to reduced topsoil depth and…”
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Four Levels of Assessment for LID Practices by Hozalski, R. M, Nestingen, R. S, Asleson, B. C, Nieber, J. L, Gulliver, J. S

“…The capacity to infiltrate stormwater is an important aspect of many low impact development practices. Quantitative evaluation of infiltration capacity has…”
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