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《Journal of Guilin University of Technology》 2009-03
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Transforming Three Dimensional Magnetic Data on an Arbitrary Surface into a Plane and Boundary Correction With Boundary Element Method

KUANG Ying-ping1,2,ZHANG Xiao-lu1(1.College of the Earth Sciences,Guilin University of Technology,Guilin 541004,China;2.Central South Institute of Geology Survey,China Metallurgical Geology Bureau,Wuhan 430081,China)  
In magnetic field prospecting,the hypsography will make magnetic anomaly curve complexity or magnetic anomalies curve character unconspicuous,and reduce directly the geological effect of magnetic prospecting.In order to give prominence to the magnetic anomaly information,correct the landform effect for magnetic abnormal curves,the method of reducing arbitrary surface into a plane is used.The boundary element method is a simple and practical digital solution on reducing anarbitrary surface into plane,but this method has the boundary effect problem.This paper discusses the boundary effect issue with the interpolation,reduces the relative error of the boundary point and enable the boundary element method to the full display in reducing from anarbitrary surface into plane of three dimensional magnetic.The computation on model indicates that this method is suitable,and can highly effective reduces an arbitrary surface into a plane for the three dimensional magnetic.
【CateGory Index】: P631.2
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