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TWO‐DIMENSIONAL POWER SPECTRAL ANALYSIS OF AEROMAGNETIC FIELDS *
Author(s) -
MISHRA D. C.,
NAIDU P. S.
Publication year - 1974
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.1365-2478.1974.tb00090.x
Subject(s) - gaussian , contour line , gaussian surface , spectral density , geology , surface (topology) , histogram , magnetic anomaly , mineralogy , gaussian function , geometry , mathematics , statistics , physics , geophysics , image (mathematics) , quantum mechanics , artificial intelligence , meteorology , computer science , electric field
A bstract A study of probability distribution function and spectrum of the Airborne Total Intensity Map for an area of 3000 Squ. miles covered by the Bundelkhand granite in India has revealed a close correlation between the Gaussian or non‐Gaussian nature of distribution and the shape of unite value contour on the spectrum plot. Further studies of radial spectrum plots suggest that the surface magnetic sources are mainly responsible for the non‐Gaussian character of the distribution function and as well as for irregular spectrum shape. The histogram of depth values for magnetic sources obtained from radial spectrum plots show three horizons, namely (i) surface (ii) 410 m(1400′) and (iii) 1000 m (3400′). Based on these informations blocks with ferromagnetic composition at the surface can be identified from those which are non magnetic at the surface.