Journal article

Calibration of an impedance probe for estimation of surface soil water content over large regions

MH Cosh, TJ Jackson, R Bindlish, JS Famiglietti, D Ryu

JOURNAL OF HYDROLOGY | ELSEVIER | Published : 2005

Abstract

Large region surface soil moisture estimates are important for both hydrologic modeling and remote sensing applications. For soil moisture monitoring, gravimetric soil moisture sampling is reliable; however, it requires a significant effort to gather and process samples. Portable impedance probes serve as a valuable alternative to destructive gravimetric sampling. These probes measure the dielectric properties of the soil-water-air mixture from which we can infer the volumetric soil moisture. As part of recent large-scale experiments in the summers of 2002 and 2003, three different methods for calibrating impedance probes were investigated with the support of coincident gravimetric samples. ..

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University of Melbourne Researchers