Results 81 to 90 of about 3,626 (208)

Transport from diffuse sources of contamination and its application to a coupled unsaturated - saturated system [PDF]

open access: yes, 1988
A simple theory to predict groundwater quality upon contamination from diffuse sources was developed. It appeared that an analogy exists between the predominant transport phenomena and the reaction of a reservoir, in which perfect mixing takes place ...
Ommen, H.C., van, van Ommen, H.C.
core  

Modified expression for hydraulic conductivity according to Mualem–van Genuchten to allow proper computations at low‐pressure heads

open access: yesVadose Zone Journal
Water retention and hydraulic conductivity characteristics are key input data in studies on soil water dynamics in the vadose zone. The most well‐known analytical functions to describe these characteristics are those given by Mualem and van Genuchten ...
Marius Heinen
doaj   +1 more source

Rien van Genuchten Receives 2020 Robert E. Horton Medal

open access: yesEos, 2021
Rien van Genuchten was awarded the 2020 Robert E. Horton Medal at the virtual AGU Fall Meeting in December 2020. The medal is for “outstanding contributions to hydrology.”
openaire   +1 more source

Toward a structured workflow to harmonize soil water content products: A comparative study across different methods

open access: yesVadose Zone Journal, Volume 25, Issue 4, July/August 2026.
Abstract This study introduces a structured, multi‐step workflow for harmonizing diverse soil water content (SWC) datasets to improve their meaningful comparability while preserving their intrinsic characteristics. The workflow addresses four components: unit, temporal, vertical, and lateral spatial harmonization, and is applied to point‐scale (PS ...
Sadra Emamalizadeh   +5 more
wiley   +1 more source

Influence of weathering on unsaturated electrical conductivity of granitic regolith

open access: yesVadose Zone Journal, Volume 25, Issue 4, July/August 2026.
Abstract Geoelectrical methods have been increasingly used to characterize critical zone (CZ) subsurface structure and to monitor water dynamics within CZs. To interpret field geoelectrical measurements correctly, one needs to have a mechanistic understanding of the physical properties of the regolith.
Surani Liyanage, Qifei Niu
wiley   +1 more source

Investigating the performance of the differential evolution algorithm in estimating soil hydraulic parameters [PDF]

open access: yesمدل‌سازی و مدیریت آب و خاک
Introduction The soil water curve is one of the most critical soil hydraulic characteristics. This characteristic is used to determine soil water in the field capacity point and the permanent wilting point (PWP) beside it has a vital role in the ...
Abbas Khashei siuki   +4 more
doaj   +1 more source

Grip op Mycosphaerella in komkommer [PDF]

open access: yes, 2011
Mycosphaerella is de afgelopen jaren een toenemend probleem geworden en komt breed voor bij alle telers met verschillende teeltsystemen. De schade ten gevolge van Mycosphaerella verschilt per bedrijf, maar kan bij ernstige aantastingen oplopen naar € 1 ...
Dik, A.J.   +3 more
core  

Índice S para avaliação da qualidade física de solos

open access: yesRevista Brasileira de Ciência do Solo, 2011
O conceito da qualidade física do solo atualmente é bem estabelecido, principalmente pelos índices que avaliam a qualidade do solo. O índice S é um recente indicador da qualidade física do solo relacionado com características importantes do solo.
Celsemy Eleutério Maia
doaj   +1 more source

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