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Characterizing water fingering phenomena in soils using magnetic resonance imaging and multifractal theory
water fingering phenomena magnetic resonance imaging multifractal theory
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2009/10/30
The study of water movement in soils is of fundamental importance in hydrologic science. It is generally accepted that in most soils, water and solutes flow through unsaturated zones via preferential ...
The Step-Drawdown Test and Non-Darcian Flow:A Critical Review of Theory,Methods and Practice
Step-Drawdown Test Non-Darcian Flow Critical Review
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2009/10/28
Step-drawdown tests are usually carried out with succeeding steps of increased
pumping yield, each step of equal duration of 1 hour. The background for this
procedure 1s reviewed, and it is shown, t...
Frost Heave due to Ice Lens Formation in Freezing Soils 1.Theory and Verification
Frost Heave Ice Lens Formation Freezing Soils Theory and Verification
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2009/10/26
A frost heave model which simulates formation of ice lenses is developed for
saturated salt-free soils. Quasi-steady state heat and mass flow is considered.
Special attention is paid to the transmit...
RESPONSE THEORY FOR ALLUVIAL RIVER ADJUSTMENTS TO ENVIRONMENTAL AND MAN-MADE CHANGES
alluvial channels friction factor dynamic equilibrium
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2009/10/13
A response theory is developed for prediction of the direction and magnitude of alluvial river adjustments from one regime to another due to environmental and man-made changes. The theory makes use of...
Preferential transport of water and 131Iodide in a clay loam assessed with TDR-techniques and boundary-layer flow theory
clay loam soil moisture variations boundary-layer flow
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2009/6/8
Rapid soil moisture variations were measured with TDR equipment at five depths ranging from 0.1 to 0.9 m during five consecutive infiltration experiments under ponding. Each time, 27 mm of water were ...