Mean deviation method of reconnaissance exploration of the earth with radio waves

Claim 1

A RADIO METHOD OF LOCATING SUBSURFACE GEOLOGIC FEATURES COMPRISING THE STEPS OF PROPAGATING ELECTROMAGNETIC WAVES ALONG A TRAVERSE SO THAT SOME OF SAID WAVES ARE REFRACTED INTO THE EARTH, MEASURING A CHARACTERISTIC OF SAID WAVES AT A PLURALITY OF LOCATIONS ALONG SAID TRAVERSE, RECORDING THE MEASURED VALUES OF SAID CHARACTERISTIC AGAINST THE LOCATION ALONG SAID TRAVERSE AT WHICH SAID CHARACTERISTIC WAS MEASURED TO OBTAIN A PLOT OF THE RECORDED MEASUREMENT, CONSTRUCTING THE MEAN CURVE THROUGH THE PLOTTED VALUES, DETERMINING THE DEVIATION OF SAID MEASURED CHARACTERISTIC AT EACH LOCATION FROM SAID MEAN CURVE, DETERMINING THE AVERAGE DEVIATION OF SAID MEASURED CHARACTERISTIC FROM THE MEAN CURVE FROM MEASUREMENT MADE IN AND AREA KNOWN TO BE VOID OF A GEOLOGIC FEATURE, AND DETERMINING WHICH OF SAID DEVIATIONS ARE SIGNIFICANTLY DIFFERENT FROM SAID AVERAGE DEVIATIONS.