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Artikel Jurnal
Delineating soil moisture dynamics within an evapotranspiration surface barrier using spatial‐temporal analysis
Abstract Evapotranspiration (ET) surface barriers store infiltrated precipitation during the recharge period and release the stored water to the atmosphere via ET. The primary purpose of a surface barrier is to reduce or eliminate drainage to the underlying waste zone. The objective of this study…
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Artikel Jurnal
Microbial and solute transport through intact vadose zone cores of heterogeneous alluvial gravel under variably saturated conditions
Abstract The movement of bacterial and viral pathogens through soil and vadose zone and subsequently into groundwater is a major public health concern. There are relatively few studies on the transport and fate of microbes through variably saturated vadose zone media compared with their transport…
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Artikel Jurnal
Monitoring spatiotemporal soil moisture variability in the unsaturated zone of a mixed forest using electrical resistivity tomography
Abstract European forests are suffering considerably from the consequences of the droughts of recent years, and the exact reasons and influencing factors for this are still not fully understood. This study was conducted to characterize the changes and dynamics of soil moisture in a mixed forest in…
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Artikel Jurnal
Water partitioning and migration in unsaturated bentonites by low‐field NMR characterization
Abstract Water behavior in bentonite clay pores is influenced by soil–water interaction mechanisms such as capillary and adsorptive forces. Quantitative measurement of these water statuses remains challenging, leading to the adoption of advanced techniques. This study uses low‐field nuclear…
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Artikel Jurnal
Noble gases in aquitard provide insight into underlying subsurface stratigraphy and free gas formation
Abstract Biogeochemical gas production resulting in free gas phase formation can severely affect groundwater and solute transport in aquifers. Such gas–water interactions are important in aquifers affected by geogenic As, which are commonly associated with biogeochemical CH4 production…
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Artikel Jurnal
Western U.S. multistate research project on “water movement in soils”: A retrospective
Abstract To prioritize agricultural research in the United States and to improve its competitiveness globally, Multistate Research Funds (MRFs) were set aside under the Research and Marketing Act of 1946. To implement the act, Agricultural Experiment Station (AES) Directors in the western United…
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Artikel Jurnal
Microplastic induces soil water repellency and limits capillary flow
Abstract Soils are considered the largest sink of microplastic (MP) in terrestrial ecosystems. However, little is known about the implications of MP on soil physical properties. We hypothesize that low wettability of MP induces soil water repellency, depending on MP content and size of MP and soil…
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Artikel Jurnal
Experimental quantification of interfacial convections at the water–nonaqueous‐phase liquid interface in microfluidic systems
Abstract Mass transfer rates at liquid–liquid interfaces are relevant for a broad range of processes in natural and technical systems. The objective of this study was to characterize and quantify convective flow along the interface between water and nonaqueous‐phase liquids (NAPLs). Three NAPLs…
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Artikel Jurnal
Exploring the feasibility of using the soil temperature to identify preferential and lateral subsurface flows
Abstract Soil temperature can be influenced by rapidly infiltrating water. Deviations from a uniform soil heat distribution could result from vertical preferential flow (VPF) and lateral subsurface flow (LSF) events. The objective was to identify the effect of infiltration on the soil temperature…
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Artikel Jurnal
A new exponential model for predicting soil gas diffusivity with varying degree of saturation
Abstract Soil gas diffusivity (Dp/Do, gas diffusion coefficients in soil and in free air, respectively) and its relation to soil moisture is of great importance for describing and quantifying essential provisional and regulatory functions associated with terrestrial ecosystems such as soil aeration…
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Artikel Jurnal
A field evaluation of the SoilVUE10 soil moisture sensor
Abstract The U.S. Climate Reference Network (USCRN) has been engaged in ground‐based soil water and soil temperature observations since 2009. As a nationwide climate network, the network stations are distributed across vast complex terrains. Due to the expansive distribution of the network and the…
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Artikel Jurnal
Upscaling soil moisture from point scale to field scale: Toward a general model
Abstract Field‐scale soil moisture measurements are valuable but rarely available because the resolution of most satellite soil moisture products is too coarse, while most in situ sensors provide only point‐scale data. Previous upscaling approaches for such data are mostly site‐specific, and none…
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Artikel Jurnal
Quantitative analysis of diurnal CO2 flux variations above an alkaline playa
Abstract The alkaline playas at Atlin, BC, provide a unique opportunity for studying the carbonate–bicarbonate system and carbonate mineral stability at the Earth's surface. In this study, dynamic closed chambers (DCCs) and pore‐gas sampling were used to directly quantify carbon dioxide (CO2)…
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Artikel Jurnal
Validating coupled flow theory for bare‐soil evaporation under different boundary conditions
Abstract Evaporation from bare soil is an important hydrological process and part of the water and energy balance of terrestrial systems. Modeling bare‐soil evaporation is challenging, mainly due to nonlinear couplings among liquid water, water vapor, and heat fluxes. Model concepts of varying…
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Artikel Jurnal
Mapping spatiotemporal soil moisture in highly heterogeneous agricultural landscapes using mobile dual‐spectra cosmic‐ray neutron sensing
Abstract Accurate large‐scale soil moisture (SM) maps are crucial for catchment‐scale hydrological models used for water resource management and warning systems for droughts, floods, and wildfires. SM can be mapped by mobile cosmic‐ray neutron (CRN) systems of moderated detectors at homogeneous…
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Artikel Jurnal
Contactless estimation of soil moisture using leaky Rayleigh waves and a fully convolutional network
Abstract Soil moisture is a key factor that influences various aspects of ecosystem functioning. Measuring soil moisture without installing any objects in the soil is desirable because it allows for accurate characterizations of soil moisture while minimizing impacts on soil structure and ecology…
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Artikel Jurnal
Coupling non‐invasive imaging and reactive transport modeling to investigate water and oxygen dynamics in the root zone
Abstract Oxygen (O2) availability in soils is vital for plant growth and productivity. The transport and consumption of O2 in the root zone is closely linked to soil moisture content, the spatial distribution of roots, as well as structure and heterogeneity of the surrounding soil. In this study…
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Artikel Jurnal
Development of a vadose zone advanced monitoring system: Tools to assess groundwater vulnerability
Abstract Performing repeat pore‐fluid sampling over long time‐scales can provide valuable information on unsaturated zone contaminants and their potential flux to ground water. This information can be used to manage groundwater remedies and identify contaminants that need to be sequestered in the…