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Showing 1 to 16 of 16 for “"HYDRUS-1D"”.
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Water Fluxes in Soil-Pavement Systems: Integrating Trees, Soils and Infrastructure
… and validated a soil water flow model, HYDRUS-1D, to predict soil water distribution for different rooting depths, soil textures and pavement thicknesses. Trees in paved tree pits grew larger, with stem diameters 29% (Mountains) and 51% (Coastal Plain) greater. Roots developed faster …
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The effects of winter cover cropping on nutrient leaching through repacked soil columns
… one-dimensional water and solute transport model HYDRUS-1D to quantify and understand the potential decrease in nitrogen and phosphorus loss through tile drainage due to cover crops, as well as compare the amount of nitrogen and phosphorus available in the soil at cash crop planting, with and …
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An evaluation of unsaturated flow models in an arid climate
… The two models selected for this evaluation were HYDRUS-1D [Simunek et al., 1998] and the SHAW model [Flerchinger and Saxton, 1989]. Approximately 5 years of soil-water and atmospheric data collected from an instrumented weighing lysimeter site near the RWMS were used for building the models with …
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Sorption and degradation of pesticides in biopurification systems
… techniques present in the transport model HYDRUS-1D. The sorption strength of the different pesticides to the organic matrix, increased with decreasing mobility of the pesticides. Concerning increasing degradability of the pesticides, pesticides could be ranked as follows linuron > …
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Real-time control of soil moisture for efficient irrigation
… (PID) controller to minimize water use using HYDRUS- 1D, a software package for simulating the one-dimensional movement of water, heat, and solutes in porous media, to simulate soil moisture. In a direct comparison between the two controllers, the PID controller uses less water. However, small …
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Infiltration Models for Engineered Media in Living Roofs and Bioretention
… to simulated large inflows was realized in the HYDRUS-1D software, which can numerically solve the Richards equation for uniform flow modeling as well as offers a mobile-immobile model for preferential flow modeling. The magnitudes of Ks values range 10-2 to 10-1 cm/s. The measured WRC data show …
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Balancing the Water Budget: the effect of plant functional type on infiltration to harvest ratios in stormwater bioretention cells
… CSR is likely feasible. Hydraulic simulations (Hydrus 1D) were conducted for each scenario in all eight climate zones and revealed significant differences in evapotranspirative harvest and I:H ratios in simulated BRCs. Competitive woody plants had the highest evapotranspiration and lowest I:H …
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Evaluating the Hydrologic and Thermal Performance of a Green Roof in Syracuse: Measurements and Modeling of a Full-Scale System
… on hydrologic performance were modelled using HYDRUS-1D. Five 24-hour design storms were applied to predict the retention and detention performance. A 4% improvement in retention performance was calculated for 7-year-old growth medium for significant storms over the original medium. Runoff was …
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Sorption and leaching of glyphosate on partly sealed urban areas
… wurden mit dem numerischen Transportmodell HYDRUS-1D angepasst. Die beste Anpassung wurde bei einem Modell mit zwei Domänen und nicht-linearer Sorption, mit einem Kf ≤ 1 mg1-n Ln kg-1, erreicht. Der für den Grobsand aus den Durchbruchskurven der Säulenversuche errechnete Kf Wert ist eine …
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Cosmic-ray neutron sensing for soil moisture measurements in cropped fields
… sunflower period. A modelling framework coupling HYDRUS-1D and PEST was applied. Subsequently, field-scale soil hydraulic properties were compared against local scale soil properties (modelling and measurements). Successful results were obtained here, despite large difference in support volume. …
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Transport and fate of veterinary sulfonamide antibiotics in soil
… investigated with a numerical modelling program, HYDRUS-1D. The soil column studies using a conservative tracer, bromide and the antibiotics showed that an important transport mechanism in the natural soil columns can be preferential flow through macropore. A comparison of water flow and solute …
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Strengths and limitations of bioretention sorbent amendments to simultaneously remove metals, PAHs, and nutrients from urban stormwater runoff
… of all media were also investigated. Finally, HYDRUS-1D and a cost model were used to investigate longevity and cost-effectiveness of all BSM. Batch test results revealed that among all sorbents, BC and FeBC were only effective for removing PAHs; CFF had high sorption capacity for both metals …
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Water Transport in the Vadose Zone and Hydrological Processes in Soil-Plant-Atmosphere Continuum (SPAC) in West Texas, USA
… precipitation. Soil water monitoring and HYDRUS simulations show that typical rainfall events in summer 2022 can hardly penetrate 40 cm of the soil profile in semi-arid West Texas. However, the uncommon extended rainfall events in the summer of 2023 penetrated deeper than 100 cm below the …
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Soil Moisture Measurements and Modeling at a Geomorphically Reclaimed Coal Mine in New Mexico
Geomorphic reclamation is a relatively new technique in which landforms are built to be similar to those that eventually form in nature given the particular conditions of a location, making them self-sustaining and functional. The near surface water balance will have a large impact on the …
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Low impact development in urban areas for integrated watershed management across scales
Made available in DSpace on 2015-07-22T22:32:50Z (GMT). No. of bitstreams: 3 Obeid_Najwa1.pdf: 8301951 bytes, checksum: 35759855adab06abd4e3999dd5c40653 (MD5) Obeid_Najwa.docx: 12508586 bytes, checksum: a2c8a2d3d686d9d15ce7b57b5085984a (MD5) license.txt: 4059 bytes, checksum: …