Index Catalog // ScholarsArchive@OSU

Creator:: Hui, Rui, Jachens, Elizabeth, and Lund, Jay
Abstract:: Traditional risk-based analysis for levee planning focuses primarily on overtopping failure. Although many levees fail before overtopping, few planning studies explicitly include intermediate geotechnical failures in flood risk analysis. This study develops a risk-based model for two simplified levee failure modes: overtopping failure and overall intermediate geotechnical failure from through-seepage,...
Resource Type:: Article
Full Text:: the floodplain, a is the levee landside slope, b is the levee waterside slope, H is levee height, and

Creator:: Beamer, J. P., Hill, D. F., Arendt, A., and Liston, G. E.
Abstract:: A comprehensive study of the Gulf of Alaska (GOA) drainage basin was carried out to improve understanding of the coastal freshwater discharge (FWD) and glacier volume loss (GVL). Hydrologic processes during the period 1980–2014 were modeled using a suite of physically based, spatially distributed weather, energy-balance snow/ice melt, soil water...
Resource Type:: Article
Full Text:: 10 km grid size and 3 h time step [Liston and Hiemstra, 2011], Greenland ice sheet surface mass

Creator:: Chen, Duan, Leon, Arturo S., Gibson, Nathan L., and Hosseini, Parnian
Abstract:: Optimizing the operation of a multireservoir system is challenging due to the high dimension of the decision variables that lead to a large and complex search space. A spectral optimization model (SOM), which transforms the decision variables from time domain to frequency domain, is proposed to reduce the dimensionality. The...
Resource Type:: Article
Full Text:: . Deb, K., and H. Jain (2011), Self-adaptive parent to mean-centric recombination for real-parameter

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:: 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
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:: 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:: , the saturated hydraulic conductivity of the wick is 800 cm/h [Knutson and Selker, 1994]; for a sandy

Creator:: Louie, Michael J., Shelby, Patrick M., Smesrud, Jason S., Gatchell, Lance O., and Selker, John S.
Abstract:: Passive capillary samplers (PCAPS), which sample water from the vadose zone via a hanging water column in a fiberglass wick, have shown potential to provide superior estimates of soil water flux compared to alternative methods. The objectives of this study were to evaluate the performance of PCAPS under natural rain-fed...
Resource Type:: Article
Full Text:: ., A simple, tension-free lysimeter, Soil Sci., 105(2), 1-86, 1968. Knutson, J. H., and J. S. Selker

Creator:: Rupp, David E. and Selker, John S.
Abstract:: Solutions to the Boussinesq equation describing drainage into a fully penetrating channel have been used for aquifer characterization. Two analytical solutions exist for early- and late-time drainage from a saturated, homogeneous, and horizontal aquifer following instantaneous drawdown. The solutions for discharge Q can be expressed as dQ/dt = −aQ [superscript...
Resource Type:: Article
Full Text:: hydraulic conductivity profile David E. Rupp and John S. Selker Department of Bioengineering, Oregon State

Creator:: Niemet, Michael R., Rockhold, Mark L., Weisbrod, Noam, and Selker, John S.
Abstract:: Liquid saturation and gas-liquid interfacial area are important parameters for evaluating the transport and fate of contaminants in unsaturated subsurface environments. Recent findings indicate that interfacial surface area controls the relative degree of transmitted light in laboratory systems containing translucent porous media. Equations are derived to estimate the specific gas-liquid...
Resource Type:: Article
Full Text:: saturated porous media Michael R. Niemet,1,2 Mark L. Rockhold,1,3 Noam Weisbrod,1,4 and John S. Selker1

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