Index Catalog // ScholarsArchive@OSU

Water content and electrical conductivity profile measurements for dispersive media using enhanced time domain and frequency domain models

Creator:: Flugstad, Benjamin A.
Abstract:: Water conservation and water quality are rapidly increasing in importance in all areas of the world. The ability to accurately measure soil water content and salinity, over a wide variety of conditions, is key to meeting this need. A set of forward prediction models and waveform interpretation algorithms to extract...
Resource Type:: Dissertation
Full Text:: Irrigation) . 240 Figure 4.3a: Soil Moisture Content Measurement Cell w/PCBA at Bottom and Parallel Wire

Measurement and interpretation of physical properties of soils

Creator:: Nagpal, Narender Kumar, 1942-
Abstract:: One of many important physical properties that must be known to understand transport phenomena in soils is pore size distribution. Presently the pore size distributions of soils are most commonly obtained from soil water characteristic curves. The soil water characteristic curves are usually obtained by the pressure plate technique. It...
Resource Type:: Dissertation
Full Text:: Measurement and interpretation of physical properties of

Addressing Data Resolution in Precision Agriculture

Creator:: Kelley, Jason
Abstract:: Irrigated agriculture constitutes the greatest consumptive water use globally, so that irrigation efficiency measures are an important part of global efforts to best utilize this limited resource. However, greater irrigation efficiency must be achieved while simultaneously maintaining or increasing crop yields and farming profitability. Incremental water use decisions are made...
Resource Type:: Dissertation
Full Text:: irrigation demand. Soil moisture measurement helps determine how much water that is available to crops

Improving soil water determination in spatially variable field using fiber optic technology and Bayesian decision theory

Creator:: Sayde, Chadi
Abstract:: Achieving and maintaining sustainability in irrigated agriculture production in the era of rapidly increasing stress on our natural resources require, among other essential actions, optimum control and management of the applied water. Thus, a significant upgrade of the currently available soil water monitoring technologies is needed. The primary goal of...
Resource Type:: Dissertation
Full Text:: limited the problem of measurement uncertainty is often circumvented by maintaining soil moisture at

Gaussian elimination technique for solving the diffusion equation for moisture movement in unsaturated soil

Creator:: Ashcroft, Gaylen L.
Resource Type:: Dissertation
Full Text:: equation for moisture movement in unsaturated soil GAUSSIAN ELIMINATION TECHNIQUE FOR SOLVING THE

The steady state flow of water through unsaturated soil in the low capillary potential region

Creator:: Stammers, William Norman
Abstract:: Several investigators have recently called attention to the fact that the flux equation for water movement in unsaturated soils may not be an appropriate mathematical model for the development of the theory of unsaturated flow phenomena. An analytical theory is developed for the purpose of testing the validity of the...
Resource Type:: Dissertation
Full Text:: OF CONTENTS (Con' t) Measurement of Water Flux Measurement of Soil Water Content Computational

Techniques for evaluating certain physical properties of soil moisture

Creator:: Chinn, Clarence Edward
Resource Type:: Dissertation
Full Text:: soil moisture TECHNIQUES FOR EVALUATING CERTAIN PHYSICAL PROPERTIES OF SOIL MOISTURE by CLARENCE

Saturated water permeability of soils as related to air permeability at different moisture tension

Creator:: Al-Jibury, Falih Khidir
Resource Type:: Dissertation
Full Text:: measurement of air permeability at certain moisture tensions. The objectives of this study were to

Water and anion movement in selected soils of western Oregon

Creator:: Hammermeister, Dale P.
Abstract:: Experiments were carried out to study the movement of water and halide anions in perched water tables or saturated zones in the soil and upper rock mantle of eight different experimental sites located on low hills near the western border of the Willamette Valley. At each site the experimental procedure...
Resource Type:: Dissertation
Full Text:: Oregon AN ABSTRACT OF THE THESIS OF Dale Hammermeister for the degree of Doctor of Philosophy in Soil

Heat and moisture transfer in a pumice soil

Creator:: Cochran, Patrick Holmes
Resource Type:: Dissertation

ScholarsArchive@OSU

Water content and electrical conductivity profile measurements for dispersive media using enhanced time domain and frequency domain models

Measurement and interpretation of physical properties of soils

Addressing Data Resolution in Precision Agriculture

Improving soil water determination in spatially variable field using fiber optic technology and Bayesian decision theory

Gaussian elimination technique for solving the diffusion equation for moisture movement in unsaturated soil

The steady state flow of water through unsaturated soil in the low capillary potential region

Techniques for evaluating certain physical properties of soil moisture

Saturated water permeability of soils as related to air permeability at different moisture tension

Water and anion movement in selected soils of western Oregon

Heat and moisture transfer in a pumice soil

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