Estimating the direction of source magnetisation through comparison of pseudogravity and total gradient

ABSTRACT

This paper describes an algorithm for estimating the direction of source magnetisation with acceptable accuracy through comparison of pseudogravity and total gradient data. In this algorithm, the location of the horizontal centroid of a magnetic source should first be identified (from the extrema of the total gradient or by any other method), the direction of source magnetisation is then modified until the pseudogravity data (produced from windowed magnetic data over the magnetic source) peak directly over the estimated location of the horizontal centroid of the magnetic source. That direction is the estimated direction of magnetisation of the magnetic source.

KEYWORDS:

• direction of magnetisation
• total gradient
• pseudogravity

Acknowledgements

I wish to especially thank Dr Abedi (from Mining Department of University of Tehran) for his effective help. Also I wish to thank Dr Habibian, Prof. Ardestani and Dr Montahaei (from Institute of Geophysics of University of Tehran) for their help.