Magnetic Interpretation of Horizontal Cylinders Using Displacement of the Maximum and Minimum by Upward Continuation
Ibrahim KARA, Mustafa ÖZDEMIR and Ali Ismet KANLI
Istanbul University,
Engineering Faculty, Department of
Geophysics,
34850, Avcılar,
Istanbul, TURKEY.
(Received
18 November 2002; Accepted 9 January 2003)
Abstract: Three points
belonging to maximum / minimum anomalies are obtained for infinitely extended
horizontal cylinders. However, only
two points will be prominent on the anomalies and the third will generally be
far from the origin. In this paper
an interpretation technique is suggested using displacement of the maximum and
minimum when the upward continuation of the magnetic anomaly is performed. The depth (z), the index parameter
(Q) and the amplitude coefficient (C) of the cylinder are calculated by
deriving the equations, and the origin is located on the profile. The applicability of the method is
tested for a theoretical model and the vertical magnetic anomaly over the Pima
copper mine in Arizona is interpreted.
Keywords: magnetic interpretation;
cylinder; upward continuation; shifted of extrema.