Geophysical Prospection of Underground Water in the Desert by Means of Electromagnetic Interference Fringes

This paper introduces the principles and techniques of underground water prospection in the desert by means of electromagnetic interference fringes. Part I formulates the ''Variable Frequency Interference Method" while Part II deals with the ''Variable Distance Interference Method." Samples of interference patterns obtained at two places in the Egyptian deserts are shown. The water table at one of these places is known from actual boring. Interpretation of the interference patterns and the proposed method of calculation of the water table depend upon a knowledge of the average dielectric constant of the propagational medium together with a single interference pattern determined by either of the methods in Part I or Part II. A good degree of agreement existed between the derived results and the actual water table.