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Artikel Jurnal
Correcting for Biogenic Gas Matrix Effects on Laser-Based Pore Water-Vapor Stable Isotope Measurements
The isotopic composition (δH, δO) of pore water is an invaluable tracer for the minimally invasive study of subsurface water flow and transport processes. Here, we evaluated a method for pore water isotope analysis that combines laser-based isotope analyzers and water-vapor isotope equilibration…
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Artikel Jurnal
Susquehanna Shale Hills Critical Zone Observatory: Shale Hills in the Context of Shaver’s Creek Watershed
The Susquehanna Shale Hills Critical Zone Observatory (SSHCZO) was established to investigate the form, function, and dynamics of the critical zone developed on sedimentary rocks in the Appalachian Mountains in central Pennsylvania. When first established, the SSHCZO encompassed only the Shale…
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Artikel Jurnal
Soil Systems for Upscaling Saturated Hydraulic Conductivity for Hydrological Modeling in the Critical Zone
Successful hydrological model predictions depend on appropriate framing of scale and the spatial-temporal accuracy of input parameters describing soil hydraulic properties. Saturated soil hydraulic conductivity () is one of the most important properties influencing water movement through soil under…
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Artikel Jurnal
Examining the Potentials and Limitations of Using Temperature Tracing to Infer Water Flux through Unsaturated Soils
Irrigation agriculture is the primary consumer of water worldwide. Because groundwater resources are being depleted, there is an increasing need to measure subsurface flux to quantify consumptive use and return flow. This study used HYDRUS-1D to simulate one-dimensional vertical movement of water…
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Artikel Jurnal
Statistical Characterization of the Root System Architecture Model CRootBox
The connection between the parametrization of three-dimensional (3D) root architecture models and characteristic measures of the simulated root systems is often not obvious. We used statistical methods to analyze the simulation outcome of the root architecture model CRootBox and built meta-models…
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Artikel Jurnal
Hydrologic and Geochemical Research at Pinios Hydrologic Observatory: Initial Results
The Pinios Hydrologic Observatory (PHO) is located in the River Pinios basin, which is one of the most productive basins in Greece. The PHO was established to develop deep knowledge of water balance at the river basin scale and to improve understanding of the major hydrodynamic mechanisms to…
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Artikel Jurnal
Impacts of Yongding River Ecological Restoration on the Groundwater Environment: Scenario Prediction
Reclaimed water was discharged into the Yongding River channels as ecological water. Pollutants from such water may leak into the underlying aquifer and put the groundwater environment at risk. River leakage estimation under different possible river lining conditions and the established groundwater…
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Artikel Jurnal
The Effects of Timing of Inundation on Soil Physical Quality in the Water-Level Fluctuation Zone of the Three Gorges Reservoir Region, China
With the completion of the Three Gorges Dam, soils between the elevations of 145 and 175 m are exposed or submerged seasonally. Soil hydrological and physical properties are changed. A detailed investigation was performed to examine the influence of the timing of inundation on soil physical…
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Artikel Jurnal
Ecohydrologic Changes Caused by Hydrologic Disconnection of Ephemeral Stream Channels in Mojave National Preserve, California
Emplacement of highways and railroads has altered natural hydrologic systems by influencing surface-water flow paths and biotic communities in Mojave National Preserve. Infiltration experiments were conducted along active and abandoned channels to evaluate changes in hydrology and related effects…
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Artikel Jurnal
Exploring Osmotic Stress and Differences between Soil–Root Interface and Bulk Salinities
Design of efficient water irrigation strategies with a combination of high-quality water and saline water relies on accurate prediction of root water uptake. Macroscopic models are usually used to predict root water uptake at the field scale. However, they miss proper representation of stress…
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Artikel Jurnal
The TERENO-Rur Hydrological Observatory: A Multiscale Multi-Compartment Research Platform for the Advancement of Hydrological Science
We provide an overview of the Rur hydrological observatory, which is the main observational platform of the TERENO (TERrestrial ENvironmental Observatories) Eifel/Lower Rhine Valley Observatory. The Rur catchment area exhibits distinct gradients in altitude, climate, land use, soil properties, and…
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Artikel Jurnal
3DMGAR: A Transient Quasi-3D Point-Source Green–Ampt Infiltration and Redistribution Model
Although Richards’ equation (RE) generally provides a good description of infiltration and water redistribution in soils, its numerical solutions can be computationally intensive or suffer from numerical instability and require extensive soil data. Simplified physically based approaches are often…
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Artikel Jurnal
A Forest Evapotranspiration Paradox Investigated Using Lysimeter Data
In spite of the large number of studies on the role of forests in affecting local and global water and energy cycles, conflicting reports on even the sign of the change in evapotranspiration over forest compared with non-forest land cover can be found depending on the type of data used. Whereas…
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Artikel Jurnal
Modeling Soil–Water–Disease Interactions of Flood-Irrigated Mandarin Orange Trees: Role of Root Distribution Parameters
Variably saturated flow models that simulate soil–water–plant interactions within the rhizosphere largely ignore the effect of plant health. This makes it difficult for them to effectively simulate root water uptake (RWU) and implement alternate management practices for diseased trees. This…
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Artikel Jurnal
Field and Laboratory Evaluation of the CS655 Soil Water Content Sensor
Soil moisture sensors infer volumetric soil water content (SWC) from other properties of the bulk porous media. The CS655 water content reflectometer is a relatively new, low-frequency electromagnetic sensor that determines relative permittivity () using the two-way travel period and voltage…
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Artikel Jurnal
The Effect of Drying around Power Cables on the Vadose Zone Temperature
The effects of moisture migration away from power cables depend strongly in most soils on whether the soil has reached the so-called critical conditions (e.g., critical temperature) for a dry-out. However, research on how to estimate this critical temperature has been limited. We solved numerically…