Vadose Zone Journal

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Soil–Root Interactions Controlling Upward Plutonium Transport in Variably Saturated Soils
Vadose Zone Journal - Tập 8 Số 3 - Trang 574-585 - 2009
Deniz I. Demirkanli, Fred J. Molz, Daniel I. Kaplan, Robert A. Fjeld
Due to its high toxicity and a long half‐life, processes that may enhance Pu mobility in the environment and possible transport and exposure pathways need to be better understood and identified. The results of long‐term Pu field lysimeter experiments at the Savannah River Site showed anomalous distributions below the source, with significant upward migration above the source. A previously develope... hiện toàn bộ
Using Simple Bucket Models to Analyze Solute Export to Subsurface Drains by Preferential Flow
Vadose Zone Journal - Tập 2 Số 1 - Trang 68 - 2003
Andreas Köhler, Karim C. Abbaspour, M. Fritsch, R. Schulin
Water Retention Characteristics and Pore Structure of Binary Mixtures
Vadose Zone Journal - Tập 14 Số 2 - Trang 1-7 - 2015
Toshihiro Sakaki, Kathleen M. Smits
The mixing of different sized soil particles is known to affect soil properties such as density, porosity, hydraulic conductivity, and soil water retention. To better understand how the mixing controls soil water retention characteristics, a set of laboratory experiments was performed using binary mixtures of coarse and fine particles with seven different mixing fractions. For each mixture, the wa... hiện toàn bộ
On Leakage and Seepage from Geologic Carbon Sequestration Sites: Unsaturated Zone Attenuation
Vadose Zone Journal - Tập 2 Số 3 - Trang 287-296 - 2003
Curtis M. Oldenburg, Andrè Unger
Role of Surface Roughness in Chemical Detachment of Colloids Deposited at Primary Energy Minima
Vadose Zone Journal - Tập 11 Số 1 - 2012
Chongyang Shen, Lian‐Ping Wang, Baoguo Li, Yuanfang Huang, Yan Jin
This study theoretically and experimentally examined effects of surface roughness on detachment of colloids deposited under favorable chemical conditions on reduction of solution ionic strength. A superposition approach based on elemental geometric models was developed to estimate variation of Derjaguin–Landau–Verwey–Overbeek (DLVO) interaction energies between a colloid and a rough surface under ... hiện toàn bộ
Modeling Local Scaling Properties for Multiscale Mapping
Vadose Zone Journal - Tập 7 Số 2 - Trang 525-532 - 2008
Qiuming Cheng
Mapping surface soil properties and estimating soil parameters with multiresolution data has been significantly advanced by newly developed multiscale mapping technologies, which incorporate the concept and models of scaling analysis in data processing. This study was conducted to develop a new multiscale mapping technique on the basis of a power‐law model characterizing local singularity of explo... hiện toàn bộ
Effect of a Salt Crust on Evaporation from a Bare Saline Soil
Vadose Zone Journal - Tập 5 Số 4 - Trang 1246-1256 - 2006
Haruyuki Fujimaki, Takahiro Shimano, Mitsuhiro Inoue, Kazurou Nakane
Evaporation from the soil surface is a major cause of the salinization of irrigated soils in arid and semiarid regions. To optimize irrigation scheduling under saline conditions, it is essential to be able to accurately predict solute transport in soils and the evaporation rate. We conducted laboratory column experiments under constant meteorological conditions, except for radiation, which was aut... hiện toàn bộ
Numerical Analysis of Coupled Water, Vapor, and Heat Transport in the Vadose Zone
Vadose Zone Journal - Tập 5 Số 2 - Trang 784-800 - 2006
Hirotaka Saito, Jiřı́ Šimůnek, Binayak P. Mohanty
Vapor movement is often an important part in the total water flux in the vadose zone of arid or semiarid regions because the soil moisture is relatively low. The two major objectives of this study were to develop a numerical model in the HYDRUS‐1D code that (i) solves the coupled equations governing liquid water, water vapor, and heat transport, together with the surface water and energy balance, ... hiện toàn bộ
Identifying the Transport Pathways of Dissolved Organic Carbon in Contrasting Catchments
Vadose Zone Journal - Tập 13 Số 7 - Trang 1-14 - 2014
Nele Van Gaelen, Dries Verheyen, Benedicta Ronchi, Eric Struyf, Gérard Govers, Jan Vanderborght, Jan Diels
Dissolved organic C (DOC) plays an important role in the cycling and distribution of energy and nutrients. However, factors controlling the transport of DOC both within and between ecosystems are not clear. The aim of this work was to identify the contributing pathways for transport of DOC to surface water in catchments contrasting in land use and hydrogeology and during different flow regimes. St... hiện toàn bộ
Quantification and Modeling of Local Root Water Uptake Using Neutron Radiography and Deuterated Water
Vadose Zone Journal - Tập 11 Số 3 - Trang vzj2011.0196 - 2012
Mohsen Zarebanadkouki, Y.X. Kim, Ahmad B. Moradi, Hans J. Vogel, Anders Kaestner, Andrea Carminati
Tổng số: 42   
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