  The frequency dependence of soil electromagnetic properties contain valuable
information of the porous material due to strong contributions to the
dielectric relaxation behavior by interactions between aqueous pore solution
and mineral phases due to interface effects. Soil hydraulic properties such as
matric potential are also influenced by different surface bonding forces due to
interface processes. For this reason, a new analysis methodology was developed,
which allows a simultaneous determination of the soil water characteristic
curve and the dielectric relaxation behavior of undisturbed soil samples. This
opens the possibility to systematically analyze coupled hydraulic/dielectric
soil properties for the development of pedotransfer functions to estimate
physico-chemical parameters with broadband HF-EM measurement techniques.
