Subject: "unsaturated flow" / Journal: Vadose zone journal / Subject: sandy soils / Text Availability: Citation in PubAg

Author:: Mostafa, M.; Van Geel, P.J.
Source:: Vadose zone journal 2012 v.11 no.1 pp. 0
ISSN:: 1539-1663
Subject:: unsaturated flow, etc ; biofilters; biomass; mathematical models; microbial growth; permeability; sand; sandy soils; streams; vadose zone; wastewater; Show all 11 Subjects
Abstract:: ... Biological clogging of unsaturated soils is an important process that can lead to the development of a biomat and failure of biofilters used to treat various wastewater streams. Several conceptual models have been developed to simulate clogging in saturated soils; however, efforts to develop similar models for unsaturated soils have been limited. Recently, Mostafa and Van Geel proposed three conce ...
DOI:: 10.2136/vzj2011.0044
: https://dx.doi.org/10.2136/vzj2011.0044

Author:: Cordua, Knud S.; Looms, Majken C.; Nielsen, Lars
Source:: Vadose zone journal 2008 v.7 no.1 pp. 263-271
ISSN:: 1539-1663
Subject:: unsaturated flow, etc ; ground-penetrating radar; vadose zone; tomography; least squares; soil water content; clay; sandy soils; glacial deposits; Denmark; Show all 10 Subjects
Abstract:: ... Least-squares tomographic inversion of cross-borehole ground penetrating radar (GPR) data was used to estimate the radar wave velocity distribution in the upper ∼10 m of the vadose zone at a field site in northern Zealand, Denmark. The radar wave velocities were transformed to values of water saturation and formed a basis for hydrologic studies of flow characteristics of the vadose zone. Cross-bor ...
DOI:: 10.2136/vzj2007.0008
: https://dx.doi.org/10.2136/vzj2007.0008

Author:: Wellman, D. M.; Gamerdinger, A. P.; Kaplan, D. I.; Serne, R. J.
Source:: Vadose zone journal 2008 v.7 no.1 pp. 67-78
ISSN:: 1539-1663
Subject:: unsaturated flow, etc ; mathematical models; uranium; sandy soils; soil pollution; unsaturated conditions; soil heterogeneity; porous media; silt loam soils; soil transport processes; vadose zone; sand; adsorption; Show all 13 Subjects
Abstract:: ... Uranium(VI) sorption and transport was evaluated in mixtures of silt loam and coarse sand sediments using traditional static batch sorption, saturated column, and unsaturated centrifugation experiments to evaluate the association of mobile and immobile water domains with particles of different size and surface reactivity. Exclusion of conservative tracers and a decrease in U sorption compared with ...
DOI:: 10.2136/vzj2007.0076
: https://dx.doi.org/10.2136/vzj2007.0076

Author:: Torkzaban, S.; Hassanizadeh, S. M.; Schijven, J. F.; de Bruin, H. A. M.; de Roda Husman, A. M.
Source:: Vadose zone journal 2006 v.5 no.3 pp. 877-885
ISSN:: 1539-1663
Subject:: unsaturated flow, etc ; feces; soil pollution; bacteriophages; soil transport processes; sand; sandy soils; saturated flow; soil water content; soil pH; ionic strength; adsorption; Show all 12 Subjects
Abstract:: ... The transport of viruses in unsaturated porous media has been a subject of great interest in recent years because of the enhanced removal of these microorganisms compared with saturated conditions. We studied the transport of bacteriophages MS2 and ϕX174, used as surrogate pathogenic viruses, at various water contents and solution chemistries in terms of pH and ionic strength (IS). The objective w ...
DOI:: 10.2136/vzj2005.0086
: https://dx.doi.org/10.2136/vzj2005.0086

Author:: Zhang, Z.F.; Ward, A.L.; Gee, G.W.
Source:: Vadose zone journal 2003 v.2 no.2
ISSN:: 1539-1663
Subject:: unsaturated flow, etc ; sandy soils; simulation models; unsaturated conditions; field experimentation; drainage; vadose zone; soil water movement; saturated flow; Show all 9 Subjects
Abstract:: ... Accurate assessment of water flow and contaminant transport in unsaturated porous media at the field scale is often hindered by difficulties associated with obtaining reliable estimates of soil hydraulic properties. The unsteady drainage-flux method is one of the commonly used methods to measure in situ unsaturated hydraulic properties of soils. However, the properties obtained by this method usin ...

Author:: Walvoord, M.A.; Stonestrom, D.A.; Andraski, B.J.; Striegl, R.G.
Source:: Vadose zone journal 2004 v.3 no.2
ISSN:: 1539-1663
Subject:: unsaturated flow, etc ; simulation models; sandy soils; groundwater recharge; unsaturated conditions; gravelly soils; deserts; infiltration (hydrology); desert soils; soil water movement; Nevada; Show all 11 Subjects
Abstract:: ... Natural flow regimes in deep unsaturated zones of arid interfluvial environments are rarely in hydraulic equilibrium with near-surface boundary conditions imposed by present-day plant-soil-atmosphere dynamics. Nevertheless, assessments of water resources and contaminant transport require realistic estimates of gas, water, and solute fluxes under past, present, and projected conditions. Multimillen ...

Author:: Crist, J.T.; McCarthy, J.F.; Zevi, Y.; Baveye, P.; Throop, J.A.; Steenhuis, T.S.
Source:: Vadose zone journal 2004 v.3 no.2
ISSN:: 1539-1663
Subject:: unsaturated flow, etc ; soil colloids; soil transport processes; unsaturated conditions; sorption; vadose zone; porous media; sand; sandy soils; infiltration (hydrology); soil pollution; pollutants; Show all 12 Subjects
Abstract:: ... In unsaturated porous media, sorption of colloids at the air-water (AW) interface is accepted as a mechanism for controlling colloid retention and mobilization. However, limited actual pore-scale observations of colloid attachment to the AW interface have been made. To further investigate these processes, a real-time pore-scale visualization method was developed. The method builds on the light tra ...

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