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Showing 1 to 15 of 15 for “"SOIL MOISTURE DISTRIBUTION"”.
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The relationship between topography and soil moisture distribution
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Civil and Environmental Engineering, 1996.
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Moisture distribution in soil irrigated with a line source subsurface trickle irrigation system
Soil moisture distribution resulting from a line source subsurface trickle irrigation system was studied on bare and cropped layered soils. The soil type was an Uchee loamy sand. The Continuous System Modeling Program (CSMP) Model was used to simulate the soil moisture distribution resulting from …
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Satellite imagery evaluation of soil moisture variability in north-east part of Ganges Basin, India
Soil moisture variability across four river systems in Ganges Basin, from the Tista and Kosi Rivers in the east to the Gandak and Ghaghra-Rapti Rivers in the west, was assessed using Landsat TM Band 6 imagery dating from 1999-2003. The Band 6 thermal channel of Landsat is sensitive to soil …
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Throughfall variation in a mixed deciduous forest
… difference in throughfall between seasons. Soil moisture was determined on two dates. No correlation could be demonstrated between soil moisture distribution and throughfall under the forest canopy. The results, however, were inconclusive, owing to the small number of samples taken.
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Modeling and measurement of tile drain controls in intensively managed landscapes
… fields. Since a tile drain reduces vadose zone soil moisture by lowering the water table, and its outlets feed directly into streams and ditches, tile flow can affect various hydrologic, biotic and biogeochemical processes in the watershed the streams. However, the effects of spatially resolved …
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Hillslope-scale soil moisture estimation with a physically-based ecohydrology model and L-band microwave remote sensing observations from space
Soil moisture is a critical hydrosphere state variable that links the global water, energy, and carbon cycles. Knowledge of soil moisture at scales of individual hillslopes (10's to 100's of meters) is critical to advancing applications such as landslide prediction, rainfall-runoff modeling, and …
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Multi-scale satellite-derived soil moisture modeling across space and time
Understanding soil moisture processes and their spatial-temporal distribution holds great promise for advancements in water resources management, agriculture, and natural disaster assessment. Soil moisture, a crucial component of available water, influences evaporation evapotranspiration and …
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Spatiotemporal variability of hydrologic response : an entropy-based approach using a distributed hydrologic model
… dynamics of the hydrologic state variable - the soil moisture field. This thesis uses the distributed hydrologic model MOBIDIC that uses a single soil layer with dual compartments: a capillary and a gravity reservoir composed of small, and large pores, respectively. Mass and energy fluxes are …
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Spatio-Temporal Analysis of Observed Soil Moisture from Nebraska
<p>Soil moisture is a measure of the water content in a soil that is dependent upon precipitation, evapotranspiration, runoff, drainage, and irrigation. Nebraska is one of the few states that measures soil moisture in an extensive network that records weather variables on a daily basis. Daily soil …
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Effects of deficit irrigation frequency on plant growth, water use and physiology of Pelargonium x hortorum and tomato (Solanum lycopersicum L. cv. Ailsa Craig)
… under both irrigation treatments as soil moisture decreased, and showed a strong relationship with gs both in vivo and in a detached leaf transpiration bioassay. However, when plants were irrigated daily at a percentage of daily ET (adapted from FDI), plants showed an attenuated ABA …
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Controls on the Spatial-temporal distribution of soil moisture under snow dominated conditions in a naturally vegetated, sub-alpine mountain catchment
Soil moisture processes in the top soil is a pivotal element in the terrestrial phase of the hydrologic cycle over a wide range of scales. At the plot scale, soil moisture exerts a strong control on runoff, evapotranspiration, and the transfer of water to deeper soil levels and aquifers. It affects …
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Controls on the Spatial-temporal distribution of soil moisture under snow dominated conditions in a naturally vegetated, sub-alpine mountain catchment
Soil moisture processes in the top soil is a pivotal element in the terrestrial phase of the hydrologic cycle over a wide range of scales. At the plot scale, soil moisture exerts a strong control on runoff, evapotranspiration, and the transfer of water to deeper soil levels and aquifers. It affects …
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Impact of Gap Size on Environmental Conditions, Survival, and Early Growth of 5 Pacific Northwest Species
… influence of gap size on the light environment, soil moisture distribution, and understory vegetation dynamics and in turn, how these environmental characteristics effect seedling survival, health, and growth of 5 Pacific Northwest native tree species with varying shade and drought tolerances. …
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Non-invasive monitoring of water and solute fluxes in a cropped soil
… they influence water flow patterns in the soil and concurrently solute transport processes. For this reason, experiments are required to investigate the relationship between plant root water uptake and flow field variability. Within this PhD project, we tried to elucidate the role of root …
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ΕΠΙΛΥΣΗ ΠΡΟΒΛΗΜΑΤΩΝ ΚΙΝΗΣΗΣ ΤΟΥ ΕΔΑΦΙΚΟΥ ΝΕΡΟΥ ΚΑΙ ΤΩΝ ΔΙΑΛΥΜΕΝΩΝ ΟΥΣΙΩΝ ΜΕ ΜΕΘΟΔΟΥΣ ΠΕΠΕΡΑΣΜΕΝΩΝ ΣΤΟΙΧΕΙΩΝ
… IN A ONE-DIMENSIONAL SATURATED-UNSATURATED SOIL PROFILE WITHMETHODS OF FINITE ELEMENTS. THE NUMERICAL SOLUTIONS ARE BASED UPON FOUR FINITEELEMENT SCHEMES: A) THE STANDARD GALERKIN METHOD (SGM), B) THE MASS LUMPING FINITE ELEMENT METHOD (MLGM), C) THE SIMPLE MASS LUMPING FINITE ELEMENT METHOD …