2009•Computing Techniques for Geophysical and Geochemical ExplorationRequires access
A MAGNETIC ANOMALY GRADIENT DEPTH SOUNDING-BASED ELECTRICAL ANALYSIS
Zhongping Li
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Abstract
In this paper,we collect magnetic field data of geomagnetic platform records in one place and the geomagnetic diurnal change data in another place,then,refer the magnetic field from the geomagnetic platform as the reference and take geomagnetic diurnal change as main magnetic field.We adopt the Fourier transform to do temporal spectrum analysis of magnetic anomaly,calculate horizon derivative of magnetic field for two place and magnetic respond parameter and apparent resistivity,and do 1D inversion of electromagnetic.The inversion results are similar to the results from CSAMT method in the same depth sounding section.This calculating method can effectively extract deep information of magnetic anomaly,which is a new added interpret medium for deep exploration of crisis mines.