Index Catalog // ScholarsArchive@OSU

Creator:: Selker, John S. and Schroth, Martin H.
Abstract:: The use of dimensionless scaling is ubiquitous to hydrodynamic analysis, providing a powerful method of extending limited experimetnal results and generalizing theories. Miller and Miller [1956] contributed a scaling framework for immiscible fluid flow through porous media that relied on consistency of the contact angle between systems to be compared....
Resource Type:: Article
Full Text:: of hydrodynamic scaling in porous media using finger dimensions John S. Selker Department of

Creator:: Selker, John
Abstract:: Sloping interfaces of fine over coarse porous material have been considered for use as barriers to infiltration for many years. Previous literature has developed analytical solutions for flow over such interfaces, numerical simulation of such flow, and the effects of anisotropy on the diversion capacity of such a system. In...
Resource Type:: Article
Full Text:: shape for protective capillary barriers John Selker Department of Bioresource Engineering, Oregon

Creator:: Brandi-Dohrn, Florian M., Dick, Richard P., Hess, Mario, and Selker, John S.
Abstract:: An accurate assessment of leaching losses in the vadose zone requires measurement of both solute and water flux to compute flux concentrations (C[subscript F]). Leachate collected at a depth of 1.2 m in 32 passive capillary samplers (PCAPS), which sample soil-pore water continuously at tensions of 0–50 cm H₂O was...
Resource Type:: Article
Full Text:: Hess and John S. Selker Department of Bioresource Engineering, Oregon State University, Corvallis

Creator:: Selker, John S. and Haith, Douglas A.
Abstract:: Distributed temperature data are used as input and as calibration data for an energy based temperature model of a first order stream in Luxembourg. A DTS (Distributed Temperature Sensing) system with a fiber optic cable of 1500m was used to measure stream water temperature with 1m resolution each 2 min....
Resource Type:: Article
Full Text:: Development and Testing of Single-Parameter Precipitation Distributions JOHN S. SELKER AND DOUGLAS A. HAITH

Creator:: Selker, John S., Duan, Jinfan, and Parlange, Jean-Yves
Abstract:: Most expressions for infiltration rely upon the assumption of vertical uniformity in soil texture and hydraulic properties. We present an extension of the results of Beven [1982, 1984] for infiltration and lateral flow in soils with decreasing permeability with depth. Unlike Beven, we base the derivations upon joint changes in...
Resource Type:: Article
Full Text:: infiltration into soils of variable pore size with depth John S. Selker Department of Bioresource

Creator:: Boll, Jan, Selker, John S., Shalit, Gil, and Steenhuis, Tammo S.
Abstract:: Modeling of water and solute movement requires knowledge of the nature of the spatial distribution of transport parameters. Only a few of the field experiments reported in the literature contained enough measurements to discriminate statistically between lognormal and normal distributions. To obtain statistically significant data sets, six field experiments at...
Resource Type:: Article
Full Text:: data Jan Boll, • John S. Selker, 2 Gil Shalit, 3 and Tammo S. Steenhuis 4 Abstract. Modeling of

Creator:: Jones, J. A. and Grant, G. E.
Abstract:: This study quantified long-term changes in streamflows associated with clear-cutting and road construction and examined alternative hydrologic mechanisms to explain stream hydrograph changes in the Cascades Range, western Oregon. We examined differences in paired peak discharges for 150 to 375 storm events for five basin pairs, using 34-year records from...
Resource Type:: Article
Full Text:: basin pairs, using 34-year records from two pairs of 60-to-101-ha experimental basins in the H. J

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