Accurate calibration is key to obtaining successful time domain reflectometry (TDR) measurements of soil water content and soil bulk electrical conductivity. The article by Evett et al. (2005) contains many useful suggestions regarding further improvements of the accuracy of TDR measurements. We would like to use this comment to improve one of these suggestions. In their Fig. 6, Evett et al. (2005) showed that the probe impedance is a function of the cable length attached to the probe, which would imply that calibration procedures for accurate bulk electrical conductivity measurements need to be revised. In this comment, we will illustrate...
Comments on “Time Domain Reflectometry Laboratory Calibration in Travel Time, Bulk Electrical Conductivity, and Effective Frequency”
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Johan A. Huisman, Harry Vereecken; Comments on “Time Domain Reflectometry Laboratory Calibration in Travel Time, Bulk Electrical Conductivity, and Effective Frequency”. Vadose Zone Journal ; 5 (4): 1071–1072. doi: https://doi.org/10.2136/vzj2005.0150
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