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Artikel Jurnal
Soil water isotherm model for particle surface sorption and interlamellar sorption
Abstract Soil–water retention curve (SWRC) describes the relationship between soil matric potential and soil water content, which is recognized as the most important constitutive function for unsaturated soil that governs many hydrological and mechanical properties, such as fluid flow, hydraulic…
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Artikel Jurnal
Numerical investigation on light non–aqueous phase liquid flow in the vadose zone considering porosity effects on soil hydraulic properties
Abstract In the management of light non–aqueous phase liquid (LNAPL)‐contaminated ground, numerical simulation is widely used to analyze LNAPL flow in the unsaturated soil (vadose) zone. Porosity effects on the hydraulic properties of unsaturated soils are highly simplified in existing mathematical…
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Artikel Jurnal
How solid–liquid adsorption affects the liquid–vapor interface in pores
Abstract The augmented Young–Laplace (AYL) equation has been widely used to describe the liquid–vapor interfaces affected by capillarity and adsorption, particularly in nanoporous or clay minerals where strong adsorptive interaction prevails. Still, how adsorption ultimately shapes the liquid–vapor…
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Artikel Jurnal
Laboratory experiments and dual‐domain modeling of infiltration dynamics in partially saturated fractured porous media
Abstract Many studies have shown that fracture networks can provide rapid pathways for water infiltration and time‐dependent recharge in the vadose zone of consolidated fractured rock formations. To investigate the control of fracture networks and fracture–matrix interaction on preferential flow…
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Artikel Jurnal
An improved model and field calibration technique for measuring liquid water content in unfrozen and frozen soils with dielectric probes
Abstract Dielectric soil moisture probes can be used to obtain frequently logged field observations of volumetric water content, but because this is an indirect method, it is challenging to ensure that you have a suitable calibration relationship and parameters. Challenges are associated with (a)…
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Artikel Jurnal
Pore‐scale analytic model to calculate the suction stress in partially saturated soils
Abstract The expression of effective stress in unsaturated conditions has remained controversial ever since the concept was first proposed in the 1950s by Bishop. In this paper, based on the first law of thermodynamics, a novel approach is proposed to calculate the effective stress in unsaturated…
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Artikel Jurnal
Tracing lateral subsurface flow in layered soils by undisturbed monolith sampling, targeted laboratory experiments, and model‐based analysis
Abstract Lateral subsurface flow (LSF) is a phenomenon frequently occurring in the field induced by local water saturation along horizon boundaries under nonequilibrium conditions. However, observations of LSF in undisturbed soils under controlled irrigation in the laboratory are limited but needed…
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Artikel Jurnal
Machine learning in vadose zone hydrology: A flashback
Abstract Artificial intelligence (AI) and machine learning (ML) have been recently applied extensively in various disciplines of vadose zone hydrology. However, not much attention has been paid to their database‐dependent accuracy and uncertainty, reproducibility, and delivery, which undermines…
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Artikel Jurnal
Water‐ and air‐filled pore networks and transport parameters under drying and wetting processes
Abstract The connectivity and tortuosity of fluid‐filled pore networks in the water and air phases strongly influence the mass transport in porous media. Moisture conditions (water content and distribution) alter water‐ or air‐filled pore networks. In this study, using a sand column with variable…
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Artikel Jurnal
In‐situ tin casting combined with three‐dimensional scanner to quantify anecic earthworm burrows
Abstract Earthworms (Lumbricus terrestris) play a critical role in soil ecosystems. Analyzing the spatial structure of earthworm burrows is important to understand their effect on water flow and solute transport. The aim of this study was to quantitatively characterize structural characteristics…
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Artikel Jurnal
Same soil, different climate: Crop model intercomparison on translocated lysimeters
Abstract Crop model intercomparison studies have mostly focused on the assessment of predictive capabilities for crop development using weather and basic soil data from the same location. Still challenging is the model performance when considering complex interrelations between soil and crop…
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Artikel Jurnal
Expansion and evaluation of two coupled root–shoot models in simulating CO2 and H2O fluxes and growth of maize
Abstract Leaf water pressure head (Ψleaf) and more specifically its critical thresholds (Ψthreshold) characterize stomatal control of transpiration, particularly for C4 plants, but this physiological process has rarely been integrated into dynamic crop models at the field scale. We further extended…
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Artikel Jurnal
Phosphate oxygen isotope ratios in vegetated riparian buffer strip soils
Abstract The oxygen isotopic composition of phosphate (δ18OP) in soils and surface water bodies has been used to trace terrestrial P inputs into aquatic ecosystems. However, enhanced biological activity in vegetated riparian buffer strips (VBSs) may lead to an alteration of δ18OP values. The…
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Artikel Jurnal
Pore‐scale simulation of mucilage drainage
Abstract Compared with bulk soil, rhizosphere has different properties because of the existence of root mucilage, which affects physical, chemical, and microbial processes. The slow response of rhizosphere to changes in water potential buffers water content changes and leads the rhizosphere to be…
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Artikel Jurnal
Analyzing dual porosity in soil hydraulic properties using soil databases for pedotransfer function development
Abstract Current databases of soil hydraulic properties (SHPs) have typically been used to develop pedotransfer functions (PTFs) to estimate water retention [θ(h)] assuming a unimodal pore‐size distribution. However, natural soils often show the presence of bimodal to multimodal pore‐size…
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Artikel Jurnal
Relationships between carbon age and CO2 efflux in agricultural and drainage ditch soils using the thermonuclear bomb pulse
Abstract Agricultural soils contribute significantly to global CO2 emissions. Soils can be both a CO2 sink and source depending on vegetation cover and the physical‐chemical characteristics of the soil environment. This study uses a new 14C dating approach to elucidate soil physical and geochemical…
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Artikel Jurnal
Evapotranspiration covers at uranium mill tailings sites
Abstract Waste isolation is a key strategy for mitigating risk from municipal solid waste (MSW) and hazardous waste streams. Conventional covers at MSW facilities are designed for a 30‐yr post‐closure period where compacted soils and geosynthetics are used to minimize percolation into buried waste…
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Artikel Jurnal
Correspondence between theory and practice of a Beerkan infiltration experiment
Abstract The Beerkan infiltration experiment is carried out by inserting the ring a short depth into the soil and establishing a positive head of water on the infiltration surface for at least a part of the run. Nevertheless, the data are analyzed by assuming a fully unconfined infiltration process…
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Artikel Jurnal
Parameter estimation from spontaneous imbibition into volcanic tuff
Abstract Two‐phase fluid flow properties underlie quantitative prediction of water and gas movement, but constraining these properties typically requires multiple time‐consuming laboratory methods. The estimation of two‐phase flow properties (van Genuchten parameters, porosity, and intrinsic…