搜索结果: 1-15 共查到“理学 water flow”相关记录23条 . 查询时间(0.416 秒)
As more gardeners and farmers add ground charcoal, or biochar, to soil to both boost crop yields and counter global climate change, a new study by researchers at Rice University and Colorado College c...
Application of Soil Water Flow Theory in Field Simulation
Application Soil Water Flow Theory Field Simulation
2009/10/28
A numerical model based on a finite difference approximation of the basic
differential equation for soil water flow is described. The equation includes a
sink term representing moisture extraction b...
Modelling of Unsaturated Flow in Heterogeneous Soils Part 11:Stochastic Simulation of Water Flow over a Field
Unsaturated Flow Heterogeneous Soils Stochastic Simulation
2009/10/27
Modelling of soil moisture conditions in spatially variable fields is treated using
stochastic methods. Spatial variability of moisture content in a vegetation covered
field is partly caused by fiel...
Modelling of Unsaturated Flow in Heterogeneous Soils Part I:Deterministic Simulations of Water Flow in Soil Profiles
Unsaturated Flow Heterogeneous Soils Deterministic Simulations
2009/10/27
Water flow and solute transport in the upper soil layers are processes which are
of importance in many hydrological and agricultural applications. These processes
are occurring in a medium which has...
Spatial Variability of Physical Parameters and Processes in Two Field Soils Part II:Water Flow at Field Scale
Spatial Variability Physical Parameters Two Field Soils Field Scale
2009/10/26
The horizontal variability of soil hydraulic parameters, water content and suction
mcasurcd within two research ficlds in Denmark is analyzed and discussed.
A numerical analysis of the flow in the t...
Spatial Variability of Physical Parameters and Processes in Two Field Soils Part I:Water Flow and Solute Transport at Local Scale
Spatial Variability Physical Parameters Two Field Soils Local Scale
2009/10/26
Natural field systems exhibit a large degree of soil heterogeneity which affects
the movement of water and solutes and thus leads to highly varying observations
of water contcnt and solute concentra...
On the Deep Water Flow into the Baltic
Water Baltic sea
2009/6/15
On the Deep Water Flow into the Baltic.
Acid neutralization capacity measurements in surface and ground waters in the Upper River Severn, Plynlimon：from hydrograph splitting to water flow pathways
Acid Neutralization Capacity water flow pathways hydrograph splitting
2009/6/8
Acid Neutralization Capacity (ANC) data for ephemeral stream and shallow groundwater for the catchments of the upper River Severn show a highly heterogeneous system of within-catchment water flow path...
Water flow pathways and the water balance within a head-water catchment containing a dambo：inferences drawn from hydrochemical investigations
Water flow pathways hydrochemical investigations water balance
2009/5/27
Dambos, seasonally saturated wetlands, are widespread in headwater catchments in sub-Saharan Africa. It is widely believed that they play an important role in regional hydrology but, despite research ...
Forward Modeling and validation of a new formulation to compute self-potential signals associated with ground water flow
porous media hydroelectrical flow electrical current density water flow
2009/5/14
The classical formulation of the coupled hydroelectrical flow in porous media is based on a linear formulation of two coupled constitutive equations for the electrical current density and the seepage...
For spatially explicit hydrological modelling an algorithm was required that works as a cellular automata on irregular meshes. From literature it was found that the usual algorithms applied for this p...
A quasi three dimensional model of water flow in the subsurface of Milano (Italy): the stationary flow
subsurface of Milano dimensional model
2009/3/24
A quasi three-dimensional model is developed to simulate the behaviour of the aquifer system which is the resource of drinkable water for the town of Milano (Italy). Non continuous semipermeable layer...
The use of hydrological and geoelectrical data to fix the boundary conditions of a ground water flow model: a case study
ground water flow boundary conditions
2009/3/12
To assess whether the hydrometric level of an artificial lake in a quarry near Milan (Italy) could be assigned as a Dirichlet boundary condition for the phreatic aquifer in a fine scale groundwater fl...
Modelling water flow and seasonal soil moisture dynamics in analluvial groundwater-fed wetland
riparian wetland eco-hydrology upward seepage floodplain hydrology
2009/3/11
Complex interactions occur in riparian wetlands between groundwater, surface water and climatic conditions.
A Method for Estimating Wind-Driven Frictional, Time-Dependent, Stratified Shelf and Slope Water Flow
Estimating Wind-Driven Frictional Time-Dependent Stratified Shelf Slope Water Flow
2009/1/12
Friction, the alongshore pressure gradient and time-dependent effects are all of lowest-order importance in the dynamics of wind-driven fluctuating currents and sea levels on continental shelves. Prev...