On November 22nd we published a new article in Sensors (http://www.mdpi.com/1424-8220/20/22/6678), where we explored the dielectric properties of soil at different electromagnetic frequencies. The bandwidth analysed ranges from 1MHz to 6 GHz and the materials studied are mainly clays and clay soils with different mineralogical compositions. This study proposes a new mixing model that tries to explain the dielectric dispersion caused, among others, by the Maxwell-Wagner effect and shows the importance of taking into account the measurement frequency when interpreting the accuracy and detecting the deficiencies of the dielectric soil moisture sensors. Furthermore, one of the main characteristics of this publication is the proposal of a new paradigm to differentiate between the possible states of water confinement in the soil.
This publication, in which we have prestigious international researchers in soil science, from important research centres such as the UK Centre for Ecology and Hydrology, the Volcani Center in Israel or Utah State University, is the result of a research stay by our predoctoral FPU member Juan Domingo González Teruel and Professor Pencho Soto, which took place last year with Doctors David A. Robinson and Inmaculada Lebron in the Welsh city of Bangor.