In Situ Calibration of Time Domain Reflectometry Sensors in Multiple Soils

摘要: Abstract As part of a larger field study, time domain reflectometry (TDR) sensors were installed to monitor volumetric water content (VWC) change with at multiple sites across North America. Currently there are many manufactures TDR equipment and these vendors often provide standard calibration curves that intended relate msec return (VWC). Some research has suggested does not require adequately describe in soil. However, for the method be most useful, reasonable estimate should made. In this an situ was used develop curve based on soils different physical properties. Additionally, effect salinity examined as well difference between horizontal vertical insertion sensors. Results from work indicate new greatly increases ability senso...