Frozen Soil
Theoretical and Test Study on Dynamic Characteristics of Thin-Layered Sandy Frozen Soil in Blasting
... layered frozen soil, we can see that the frozen soil is suffered to much smaller force along horizontal direction than normal ...of frozen soil is also different at different ...
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A simple model for predicting soil temperature in snow covered and seasonally frozen soil: model description and testing
... seasonally frozen soil can be calculated from the coupled differential equations describing water and heat flow (Karvonen, ...on soil properties: the water retention curve, unsaturated and saturated ...
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WSN Layer cluster Sensor Deployment for Frozen Soil Data Acquisition
... of frozen soil in Heilongjiang ...of frozen soil in Heilongjiang Province can be effectively studied by the same sensor nodes deployment ...
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Improved modelling of Siberian river flow through the use of an alternative frozen soil hydrology scheme in a land surface model
... of frozen soil, with several field projects and small- scale models developed (Stadler et ...of frozen soils on the larger scale was explored and established (Cherkauer and Letten- maier, 1999; ...
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Contour ripping: A tillage strategy to improve water infiltration into frozen soil
... Infiltration studies on frozen soil were conducted at sites near Pendleton, Oregon (silt loam soil), and Cul- bertson, Montana (sandy loam soil). Ripping was performed with a single chis[r] ...
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Frozen soil parameterization in a distributed biosphere hydrological model
... the frozen soil pro- cess in a land surface scheme has been recognized an indis- pensable task for more reliable estimates of soil moisture and temperature profiles, particularly in the winter of ...
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Fall contour ripping increases water infiltration into frozen soil
... Crop residue management to trap snow and soil management to improve water infiltration into frozen soil might reduce spring runoff and increase soil water storage.. We hypothesized that [r] ...
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Characterizing Subzero Temperature Thermal Properties of Seasonally Frozen Soil in Alpine Forest in the Western Sichuan Province, China
... seasonally frozen ground, with more than 25% estimated to be covered by permafrost ...seasonally frozen soils have large effects onland-atmosphereenergy exchangesand hydrological processes ...[2]. ...
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Simulated and In Situ Frost Heave in Seasonally Frozen Soil from a Cold Temperate Broad-leaved Korean Pine Forest
... of frozen soil, has great ecological significance, since it creates water storage spaces in soils at the beginning of the growing season in cold temperate ...seasonally frozen soil and the ...
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Water and Salt Movement in Unsaturated Frozen Soil: Principles and Field Observations
... Larger temperature gradients create lower temperatures which favor greater heaving pressures, but as the thermal gradient increases, it will reach a point, depending on the soil's salt c[r] ...
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Coupled cellular automata for frozen soil processes
... Although the coupling of heat and water movement in variably saturated freezing soils is complex, fundamental laws of heat and water movement coupled with principles of energy and mass conservation are able to explain ...
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Crop and soil management to increase water infiltration into frozen soil
... Key Words: soil ripping, ponded infiltration, preferential flow, spring wheat, soil water storage.. INTRODUCTION.[r] ...
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Salt and Water Movement in Unsaturated Frozen Soil
... of upward water flux increases as the amount of soluble salt in the soil increases because the thicker unfrozen water films provide a greater hydraulic conductivity, The decreasing rate [r] ...
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Effects of preferential flow on snowmelt partitioning and groundwater recharge in frozen soils
... still frozen; thus frozen soil processes play an important role in snowmelt routing, and, by extension, the timing and magnitude of ...was frozen, with soil mois- ture responses ...
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Impact factors and dynamic simulation of tillage-layer temperature in frozen-thawed soil under different cover conditions
... of soil temperature in shallow layers showed a continuously fluctuating trend, with good correlation with daily total solar ...of soil depth, the daily fluctuation trend of soil temperature gradually ...
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Ground freezing experience on the east side access Northern Boulevard crossing, New York
... a frozen arch structure under a ‘live’ roadway and rail ...the frozen zone are ...the frozen arch, the heat in the newly arrived groundwater being greater than the capacity of the ground freezing ...
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Field scale water balance closure in seasonally frozen conditions
... ally frozen prairie pasture field site in Saskatchewan, ...and soil moisture measurements were com- bined with a precipitation gauge and flux tower evapotran- spiration ...and soil moisture), while ...
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Laboratory evidence for enhanced infiltration of ion load during snowmelt
... into frozen soil both decline rapidly as snowmelt ...with soil moisture. Three experiments were carried out: dry soil conditions, unsatu- rated soil conditions, and saturated ...
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Influence of freeze-thaw events on carbon dioxide emission from soils at different moisture and land use
... unthawed soil layer; (3) the microbial metabolism in unfrozen water films on the sur- face of soil particles; (4) the respiration of cold-adapted microbes and plant roots within the bulk of frozen ...
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Change in frozen soils and its effect on regional hydrology, upper Heihe basin, northeastern Qinghai–Tibetan Plateau
... in frozen soils on catchment hydrol- ...vertical soil temperature ...vertical soil freezing–thawing processes, but they simplify the flow rout- ing using linear ...simulate frozen soil ...
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