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Filtering by: Creator Steenhuis, Tammo S. Language English [eng] Subject Soil moisture -- Measurement

Field evaluation of passive capillary samplers in monitoring the leaching of agrochemicals

Creator:

Brandi-Dohrn, Florian M.

Abstract:

Soil solution samplers have certain inadequacies that limit their range of possible applications. Passive Capillary Samplers (PCAPS), which apply suction to the soil pore-water via a fiber glass wick, have shown promising results in preliminary experiments in regard to collection efficiency of water and of bromide tracers. The objectives of...

Resource Type:

Masters Thesis

Full Text:

: Redacted for Privacy John S. Selker Soil solution samplers have certain inadequacies that limit their
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:

Abstract approved: _____________________________________________________________________ John S. Selker
A predictive model for time domain reflectometry soil water content and salinity measurements

Creator:

Flugstad, Benjamin A.

Abstract:

Soil water content and water potential are two important parameters in determining the status of water in the soil. Improvement in the ability to measure these parameters by way of increased speed, accuracy, resolution, imaging volume, ease of automation, as well as reduced calibration requirements and reduced soil disturbance would...

Resource Type:

Masters Thesis

Full Text:

3.4.5 Reflection Effects 46 3.5 Wave Propagation In Composite Media 51 3.6 Scattering (S) Parameter