Dielectric properties of sand in range 0.4-13 MHz

At some applications (remote sensing, radiowave propagation etc.) it is necessary to know the dielectric properties of soil. However at frequencies below 100 MHz that data is absent practically. The authors designed the portable equipment for measurement of relative dielectric constant and conductivity of ground in situ. By using that equipment dielectric properties of some kinds of soil were measured. The dielectric properties of sand were measured from January to May 1993 at a fixed site. As a result the frequency and temperature dependencies of relative dielectric constant and conductivity of sand were investigated. The empirical formulas of that dependencies were obtained. As a basis of experimental data the K-K diagrams for various temperatures were plotted. The character of diagrams is different for frozen and melted wet sand. The results enable the remote determination of sand temperature conditions