Search Results - "de Rooij, G. H."

Water storage change estimation from in situ shrinkage measurements of clay soils by te Brake, B, van der Ploeg, M. J, de Rooij, G. H

“…The objective of this study is to assess the applicability of clay soil elevation change measurements to estimate soil water storage changes, using a…”
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Transient flow between aquifers and surface water: analytically derived field-scale hydraulic heads and fluxes by de Rooij, G. H

“…The increasing importance of catchment-scale and basin-scale models of the hydrological cycle makes it desirable to have a simple, yet physically realistic…”
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Averaged water potentials in soil water and groundwater, and their connection to menisci in soil pores, field-scale flow phenomena, and simple groundwater flows by de Rooij, G. H.

“…The movement of subsurface water is mostly studied at the pore scale and the Darcian scale, but the field and regional scales are of much larger societal…”
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Averaging hydraulic head, pressure head, and gravitational head in subsurface hydrology, and implications for averaged fluxes, and hydraulic conductivity by Rooij, G.H. de

“…Current theories for water flow in porous media are valid for scales much smaller than those at which problem of public interest manifest themselves. This…”
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Polymer tensiometers with ceramic cones: direct observations of matric pressures in drying soils by van der Ploeg, M. J., Gooren, H. P. A., Bakker, G., Hoogendam, C. W., Huiskes, C., Koopal, L. K., Kruidhof, H., de Rooij, G. H.

“…Measuring soil water potentials is crucial to characterize vadose zone processes. Conventional tensiometers only measure until approximately −0.09 MPa, and…”
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Catchment-scale non-linear groundwater-surface water interactions in densely drained lowland catchments by van der Velde, Y., de Rooij, G. H., Torfs, P. J. J. F.

“…Freely discharging lowland catchments are characterized by a strongly seasonal contracting and expanding system of discharging streams and ditches. Due to this…”
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Improving catchment discharge predictions by inferring flow route contributions from a nested-scale monitoring and model setup by van der Velde, Y., Rozemeijer, J. C., de Rooij, G. H., van Geer, F. C., Torfs, P. J. J. F., de Louw, P. G. B.

“…Identifying effective measures to reduce nutrient loads of headwaters in lowland catchments requires a thorough understanding of flow routes of water and…”
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A field experiment with variable-suction multi-compartment samplers to measure the spatio-temporal distribution of solute leaching in an agricultural soil by Bloem, E., Hogervorst, F.A.N., de Rooij, G.H.

“…Solutes spread out in time and space as they move downwards from the soil surface with infiltrating water. Solute monitoring in the field is often limited to…”
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Spatial and temporal distribution of the leaching of surface applied tracers from an irrigated monolith of a loamy vineyard soil by Bloem, E, Hermon, K. M, de Rooij, G. H, Stagnitti, F

“…Fresh water scarcity is an increasing problem worldwide. Strategies to alleviate water scarcity include the use of low-quality water for irrigation. The risk…”
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Leaching surfaces to characterize transport in a heterogeneous aquifer: Comparison between flux concentrations, resident concentrations, and flux concentrations estimated from temporal moment analysis by Bloem, E., Vanderborght, J., de Rooij, G. H.

“…For subsurface solute transport, flux concentrations are key, while usually resident concentrations are measured. Flux concentrations are frequently estimated…”
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Modeling fingered flow of water in soils owing to wetting front instability: a review by Rooij, G.H. de

“…Recent research on modeling fingered flows in the unsaturated zone of soils-a pathway for enhanced solute leaching to groundwater-is reviewed. Stability…”
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Nitrate response of a lowland catchment: On the relation between stream concentration and travel time distribution dynamics by van der Velde, Y., de Rooij, G. H., Rozemeijer, J. C., van Geer, F. C., Broers, H. P.

“…Nitrate pollution of surface waters is widespread in lowland catchments with intensive agriculture. For identification of effective nitrate concentration…”
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The diverse and unanticipated roles of histone deacetylase 9 in coordinating plant development and environmental acclimation by de Rooij, Peter G H, Perrella, Giorgio, Kaiserli, Eirini, van Zanten, Martijn

“…Plants tightly control gene transcription to adapt to environmental conditions and steer growth and development. Different types of epigenetic modifications…”
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Parameterizing the Leaching Surface by Combining Curve-Fitting for Solute Breakthrough and for Spatial Solute Distribution by Bloem, E., de Gee, M., de Rooij, G. H.

“…Multi-compartment samplers (MCSs) measure unsaturated solute transport in space and time at a given depth. Sorting the breakthrough curves (BTCs) for…”
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Solute and contaminant transport in heterogeneous soils by STAGNITTI, F, VILLIERS, N, PARLANGE, J.-Y, STEENHUIS, T. S, DE ROOIJ, G. H, LI, L, BARRY, D. A, XIONG, X, LI, P

“…Without abstract…”
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Pressure head distribution during unstable flow in relation to the formation and dissipation of fingers by Cho, H., de Rooij, G. H.

“…Wetting front instability creates a shallow induction zone from which fingers emerge that rapidly transport water and solutes downwards. How the induction zone…”
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Measuring the effect of structural connectivity on the water dynamics in heterogeneous porous media using speedy neutron tomography by Schaap, J.D., Lehmann, P., Kaestner, A., Vontobel, P., Hassanein, R., Frei, G., de Rooij, G.H., Lehmann, E., Flühler, H.

“…The temporal and spatial distribution of water within a porous medium is affected by the medium’s structure, i.e., the spatial arrangement of its constituents…”
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Technical note: A sigmoidal soil water retention curve without asymptote that is robust when dry-range data are unreliable by de Rooij, Gerrit Huibert

“…In a recently introduced parameterization for the soil water retention curve (SWRC) with a sigmoid wet branch and a logarithmic dry branch, the matric…”
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Near-surface distributions of soil water and water repellency under three effluent irrigation schemes in a blue gum ( Eucalyptus globulus) plantation by Thwaites, L.A., de Rooij, G.H., Salzman, S., Allinson, G., Stagnitti, F., Carr, R., Versace, V., Struck, S., March, T.

“…Water repellent soils are difficult to irrigate and susceptible to preferential flow, which enhances the potential for accelerated leaching to groundwater of…”
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Sigmoidal water retention function with improved behaviour in dry and wet soils by de Rooij, Gerrit Huibert, Mai, Juliane, Madi, Raneem

“…A popular parameterized soil water retention curve (SWRC) has a hydraulic conductivity curve associated with it that can have a physically unacceptable…”
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