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Evaluation of GPR-Derived Soil Moisture for Unsaturated Flow Models

Comparing numerical flow models from traditional point-measured data and GPR-derived soil moisture content for unsaturated flow. Field studies will be conducted to validate and calibrate models, with the goal of predicting water movement accurately. Dissemination through professional journals is planned.

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Evaluation of GPR-Derived Soil Moisture for Unsaturated Flow Models

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  1. Evaluation of Ground-Penetrating Radar-Derived Soil Moisture Contents for Use with Unsaturated Numerical Flow Models Eric Harmsen Hamed Parsiani

  2. Project Goal • To compare numerical models of variably saturated flow developed from traditional point-measured moisture content data and GPR-derived moisture content data.

  3. Experimental Layout

  4. Specifics Objectives • Conduct a field study (Year-1) to obtain shallow (1 meter) GPR measurements at various locations where the vertical moisture content distribution is know with high accuracy [obtained from time domain reflectometry (TDR) measurements] • The TDR data will be used to calibrate the GPR transformation model. • Develop and calibrate numerical unsaturated flow models using the point-measured moisture data and spatially continuous GPR moisture data. • Conduct a field study (Year-2) to validate the GPR method for estimating soil moisture content.

  5. Specific Objectives – Cont. • Perform a statistical comparison analysis of the TDR and GPR moisture data obtained from the year-2 field study. • Using the calibrated numerical flow models, predict water movement for the year-2 field conditions. • Perform a comparison analysis of the two numerical flow models for the year-2 field conditions • Disseminate information in professional journals (2 papers per year).

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