MAGNETIC VARIATION METHOD

摘要

In a magnetovariational method for detecting, mapping out, and evaluating spectrally magnetically active underground occurrences, abnormal magnetic fields (2) varying over time and existing in conjunction with spectrally magnetically active rock masses (1) are measured according to location and time within an examination region on or above the earth''s surface (8) as signal and/or field variables in at least one spatial direction component, the time series measured data recorded for each measurement location in the examination region are transferred by means of data processing, in particular spectral analysis, into the power spectral density in the frequency range 0.01 to 100 Hz, and at least one spectral attribute (6), in particular the power, is determined therefrom, and a distinction between an occurrence and a non-occurrence of spectrally magnetically active rock masses underground is made by comparing the attribute variable values standardized to a reference value (7) to the standardized reference value (11).