Electromagnetic reflection from a plane-layered lunar model

Using elementary three- and four-layer planar models of the moon, the reflection coefficient, the surface impedance, the phase between electric and magnetic vectors, the apparent conductivity, and the apparent dielectric constant are computed for a normally incident plane wave at frequencies between 10−4 and 109 hz. From an analysis of the resulting data it is possible to conclude that one could estimate the electrical parameters and thicknesses of the major electrical units in the lunar interior from electromagnetic experiments. Of particular interest is a demonstration of the possibility of uniquely determining the presence of water, in solid or pore liquid form, from electromagnetic soundings made on or above the lunar surface. A basis for the design of orbital or surface electrical studies in the lunar environment is evident.