Microwave Dielectric Behaviour Of Wet Soils ⭐ No Sign-up

Affects the viscosity and relaxation time of water molecules. In frozen soils, most water turns to ice, causing a sharp drop in the dielectric constant, though a small fraction of "unfrozen water" may remain liquid even at -24°C.

Water molecules held tightly to soil particle surfaces (especially clay) by electrostatic forces. Its dielectric properties are restricted and closer to those of ice (~3.2–3.8). Microwave Dielectric Behaviour of Wet Soils

Fine-textured soils (high clay content) have a larger specific surface area, meaning they can hold more bound water. Consequently, clayey soils typically have a lower dielectric constant than sandy soils at the same volumetric moisture content. Affects the viscosity and relaxation time of water molecules