Equilibrium moisture profiles in consolidating, sulfidic, coastal clay soils

2002 ◽  
pp. 121-131 ◽  
Author(s):  
Ian White
Keyword(s):  
Clay Soils ◽  
Moisture Profiles

Moisture profiles in swelling soils

Soil Research ◽  
1974 ◽  
Vol 12 (2) ◽  
pp. 71 ◽  
Author(s):  
T Talsma
Keyword(s):  
Water Table ◽  
Water Movement ◽  
Moisture Gradient ◽  
Clay Soils ◽  
Upward Flow ◽  
Swelling Soils ◽  
Equilibrium Profile ◽  
Moisture Profiles

In situ moisture profiles are examined, in two soils of clay texture and in a loam, for the condition of equilibrium about a water table. In addition, moisture profiles during periods of approximately steady upward flow are examined in one of the soils of clay texture. Equilibrium moisture profiles in the clay soils are typical of the 'hydric' profiles which have been predicted for swelling materials. Upward water movement occurs against the moisture gradient. The equilibrium profile in the loam is typical of those observed for non-swelling materials.

Energetic relationships for crushing of soil clods

2006 ◽  
Vol 2 (1) ◽  
pp. 51-72
Author(s):  
István Patay ◽  
Virág Sándor
Keyword(s):  
Moisture Content ◽  
Specific Energy ◽  
Soil Moisture Content ◽  
Energy Requirement ◽  
Clay Content ◽  
Clay Soils ◽  
Rigid Support ◽  
Soil Plasticity ◽  
Specific Energy Requirement ◽  
The Relationship

Clod crushing is a principal problem with soils of high clay content. Therefore, there is a need for determining the conditions for clod breaking and clod crushing. The objective of the work was to develop a special purpose tool for single clod breaking both by rigid support of the clod and by a single clod supported by soil and to develop a machine for clod crushing. Furthermore, the purpose was to determine the relationship between the specific energy requirement for clod crushing in the function of soil plasticity and the soil moisture content by the means of the developed tool and machine. The main result of the experiments is summarized in a 3D diagram where the specific energy requirement for soil clod crushing is given in the function of the moisture content and the plasticity index for different clay soils.

The impact of lime on water quality when draining clay soils

Ekologija ◽  
2008 ◽  
Vol 54 (1) ◽  
pp. 22-28 ◽  
Author(s):  
Valentinas Šaulys ◽  
Nijolė Bastienė
Keyword(s):  
Water Quality ◽  
Clay Soils ◽  
The Impact

GEOPHYSICAL STUDIES OF SUBSURFACE GAS SEEPAGE IN SAND-CLAY SOILS

2018 ◽  
Vol 12 (3-4) ◽  
pp. 70-80
Author(s):  
A. D. Skobelev ◽  
E. Yu. Matlakhova ◽  
S. V. Serebryakov ◽  
A. P. Ermakov ◽  
I. N. Modin ◽  
...  
Keyword(s):  
Clay Soils ◽  
Gas Seepage

Numerical Solution of a Nonlinear Diffusion Model for Soybean Hydration with Moving Boundary

2015 ◽  
Vol 11 (5) ◽  
pp. 587-595 ◽  
Author(s):  
Douglas J. Nicolin ◽  
Gisleine E. C. da Silva ◽  
Regina Maria M. Jorge ◽  
Luiz Mario M. Jorge
Keyword(s):  
Differential Equation ◽  
Diffusion Model ◽  
Nonlinear Diffusion ◽  
Numerical Scheme ◽  
Moving Boundary ◽  
Grid Method ◽  
Variable Diffusivity ◽  
Variable Space ◽  
Diffusive Fluxes ◽  
Moisture Profiles

Abstract Variable diffusivity and volume of the grains are taken into account in the diffusion model that describes mass transfer in soybean hydration. The variable space grid method (VSGM) was used to consider the increase in grain size, and the diffusivity was considered an exponential function of the moisture content. An equation for the behavior of the grain radius as a function of time was obtained by global mass balance over the soybean grain and the differential equation considered that the increase in radius happens due to the influence of the convective and diffusive fluxes at the surface of the grains. The model was solved by an explicit numerical scheme which presented satisfactory results. The results showed the behavior of moisture profiles obtained as a function of time and radial position and also showed how the grain radius increased with time and changed the solution domain of the diffusion equation.

Soil moisture profiles from multifrequency radar data at basin scale

Meccanica ◽  
1996 ◽  
Vol 31 (1) ◽  
pp. 59-72 ◽  
Author(s):  
O. Bolognani ◽  
M. Mancini ◽  
R. Rosso
Keyword(s):  
Soil Moisture ◽  
Radar Data ◽  
Basin Scale ◽  
Multifrequency Radar ◽  
Moisture Profiles

scholarly journals Extending grassland age for climate change mitigation and adaptation on clay soils

2021 ◽  
Author(s):  
Goaitske Iepema ◽  
Nyncke J. Hoekstra ◽  
Ron de Goede ◽  
Jaap Bloem ◽  
Lijbert Brussaard ◽  
...  
Keyword(s):  
Climate Change ◽  
Climate Change Mitigation ◽  
Clay Soils ◽  
Mitigation And Adaptation ◽  
Change Mitigation
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