FREMGANGSMAADE TIL BESTEMMELSE AF OVERFLADER OG ANLAEG TIL UDOEVELSE AF FREMGANGSMAADEN

摘要

Method for exploration of surfaces in a surveyed zone, particularly discontinuities of the subsurface strata which comprises transmitting acoustic or radio wave trains at a substantially constant frequency from at least one point during a time interval at least equal to the travel time of the waves over twice the distance between two limit points of said surveyed zone, receiving and recording the waves reflected and diffracted from said discontinuities during at least half a period of the transmitted wave train, determining one number representative of the amplitude and one number representative of the phase from each recording and using said two numbers from each recording to restore the surface or discontinuities of the surveyed zone.