Results 61 to 70 of about 3,626 (208)

Impact of River Morphology on River–Groundwater Exchange in Braided River Systems

Groundwater, EarlyView.
Abstract Braided river systems are an important source for groundwater recharge, but their complex morphology makes river–groundwater exchange fluxes difficult to estimate. Their river channel morphology changes frequently after floods, which has effects on recharge rates that have rarely been studied in the past.
Moritz Kraft, Antoine Di Ciacca, Thomas Wöhling   +2 more
wiley   +1 more source

Impact of Software on Global and Regional Economies [Impact] [PDF]

Creating and growing software businesses is notoriously fickle. Some parts of the world are very much more successful than others. In this wide-ranging column, Egon Berghout and Michiel van Genuchten compare different regions of the world, assess the ...
Berghout, Egon, van Genuchten, Michiel
core   +1 more source

NEW EQUATIONS FOR THE DETERMINATION OF SOIL SATURATED HYDRAULIC CONDUCTIVITY USING THE VAN GENUCHTEN MODEL PARAMETERS AND EFFECTIVE POROSITY [PDF]

, 2013
Modifications of the Kozeny-Carman approach (Ks=AΦB) for the determination of saturated hydraulic conductivity Ks using the van Genuchten model parameters and the effective porosity Φe are presented in this study.
Vassilis Z. Antonopoulos, ASCHONITIS, Vasileios   +1 more
core   +1 more source

Study on the Soil-Water Characteristic Curve and Hydraulic Conductivity Prediction of Unsaturated Undisturbed and Compacted Loess

Applied Sciences
In the loess region, the hydraulic properties of the loess, used as either surrounding rock, backfilling or geoplomer material, are significant for engineering construction and agriculture development projects.
Peng Li, Guijun Cheng, Feiyu Gao, Pengju Qin, Xiao Zhang, Yue Ren, Xiaoliang Wu   +6 more
doaj   +1 more source

Virtual Soil Simulator—Finite Volume Method Implementation for the Unsaturated Porous Media Water Transport Model Including Film Flow and Isothermal Vapor Transport Phenomena

Journal of Advances in Modeling Earth Systems, Volume 18, Issue 8, August 2026.
Abstract Modeling unsaturated water transport in porous media traditionally relies on the Richards equation (RE) with hydraulic conductivity formulations to consider only capillary liquid water flow. However, this simplification neglects thin water films adsorbed onto particle surfaces, which can contribute significantly to flow under medium to dry ...
M. Kozyra, K. Lamorski, C. Sławiński
wiley   +1 more source

Frequency domain reflectometry and Hydrus-1D for parameterizing the van Genuchten equation in a sandy entisol

Discover Soil
This study hypothesized that estimating van Genuchten equation parameters using Hydrus-1D, with matric potential data (from tensiometry) and moisture data (from gravimetry and FDR probe), yields soil-water retention curves (SWRC) more consistent with ...
Ícaro Vasconcelos do Nascimento, Alexandre dos Santos Queiroz, Lucas de Sousa Oliveira, João Marcos Rodrigues dos Santos, Tiago da Costa Dantas Moniz, Raimundo Nonato de Assis Júnior, Helon Hébano de Freitas Sousa, José Carlos de Araújo, Carlos Tadeu dos Santos Dias, Cillas Pollicarto da Silva, Márcio Godofredo Rocha Lobato, Jaedson Cláudio Anunciato Mota   +11 more
doaj   +1 more source

Closed-Form SWCC Functions for Granular Mixtures [PDF]

E3S Web of Conferences
Four closed-form water-retention functions (the Gardner, Fredlund – Xing, van Genuchten 4 and 5) were validated using the experimental, ideal water retention curve data of 7 granular fractions (fine gravel, sand and silt) and their 21 mixtures with ...
Imre Emőke, Bálint Ágnes, Firgi Tibor, Kabey Mwinken Delphin, Guida Giulia, Singh Vijay P., Rajkai Kálmán   +6 more
doaj   +1 more source

Fine‐root trait variation in temperate trees follows arc‐shape pattern along deep soil profiles

New Phytologist, Volume 251, Issue 3, Page 1101-1115, August 2026.
Root trait variation along the soil depth profile in four temperate tree species. Summary Roots are plants' interface with the soil, controlling access to water and nutrients. Yet, fine‐root trait variation along deep soil profiles and its functional implications remain poorly understood.
Katrin Pietig, Christoph Leuschner, Heinz Coners, Martyna M. Kotowska   +3 more
wiley   +1 more source

Fracture–Matrix Flow Partitioning Governs Retention Regime Transitions in Unsaturated Fractured Rock

Geophysical Research Letters, Volume 53, Issue 14, 28 July 2026.
Abstract Upscaling unsaturated flow in fractured rock remains challenging because fractures and matrix often exhibit sharply contrasting hydraulic behaviors across saturation states. Here, we demonstrate that unsaturated flow undergoes a transition between matrix‐ and fracture‐dominated regimes.
M. A. Pratama, C. Jiang, M. Ziegler, Q. Lei   +3 more
wiley   +1 more source

Estimating Soil Hydraulic Parameters of Different Textured Soils in Semiarid Duhok Conditions - Iraqi-Kurdistan Region by using RETC Program

Kufa Journal for Agricultural Sciences, 2021
RETC is a computer program that can be used to estimate soil hydraulic functions by easily determining soil properties. Using van Genuchten model in the RETC program gave high accuracy for estimating the hydraulic functions e.g., θ (h), k (θ) and D (h),
Akram Abbas Khalaf
doaj