Premium
A method to estimate the total magnetization direction from a distortion analysis of magnetic anomalies 1
Author(s) -
Fedi Maurizio,
Florio Giovanni,
Rapolla Antonio
Publication year - 1994
Publication title -
geophysical prospecting
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.735
H-Index - 79
eISSN - 1365-2478
pISSN - 0016-8025
DOI - 10.1111/j.1365-2478.1994.tb00209.x
Subject(s) - declination , magnetic declination , magnetization , magnetic anomaly , distortion (music) , physics , magnetic dip , function (biology) , anomaly (physics) , geology , magnetic field , condensed matter physics , geodesy , geophysics , earth's magnetic field , quantum mechanics , amplifier , optoelectronics , cmos , astronomy , evolutionary biology , biology
Knowledge of the declination and inclination of the total and induced magnetization vectors is normally required for the interpretation and analysis of magnetic anomalies. A new method of estimating the direction of the total magnetization vector of magnetized rocks from magnetic anomalies is proposed. The unknown declination and inclination ( D * T and I * T ) can be found by applying a reduction‐to‐the‐pole operator to the measured anomalies for different couples of total magnetization direction parameters ( D T and I T ) and by observing the variation of the anomaly minimum as a function of both D T and I * T .and D * T are estimated using the maximum of this function. Comparing our method to previous methods, one advantage is that our estimates are not zero‐level dependent; furthermore, the method allows inclinations to be well estimated, with the same accuracy as declinations; finally declinations are not underestimated. Our method is applied to a real case and meaningful results are obtained; it is shown that the feasibility of the method is improved by removing the low‐frequency components.