J4 ›› 2009, Vol. 39 ›› Issue (6): 1141-1145.

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Realization of Anisotropy of Magnetic Susceptibility Ellipsoid’s 3D Graph Displaying by VB.net Language

ZHAO Qing-le1, ZHANG Shi-hong1, HAN Yi-gui1, LI Hai-yan1, DONG Jin1, ZHANG Yuan-hou2   

  1. 1.State Key Laboratory of Geological Processes and Mineral Resources, China University of Geosciences, Beijing 100083, China;2.College of Earth Sciences, Jilin University, Changchun 130061,China
  • Received:2009-03-26 Online:2009-11-26 Published:2009-11-26

Abstract:

Magnetic fabric has extensive applications in geosciences research. The shape of anisotropy of magnetic susceptibility (AMS) ellipsoid in a sample can reflect abundant geological information. AMS ellipsoid can not be intuitively reflected by graphs through software used by AMS measuring instrument at present. Its data were stored in binary and text format and were displayed by plain text. It is difficult to estimate the shape of AMS ellipsoid without help of other data processing and graph drawing software. We use Visual Basic.net programming language to calculate the principal susceptibility and principal directions, to display a 3D graph of AMS ellipsoid by calling kernel of mathematical system software-Mathematica and to display principal directions by calling kernel of graphdrawing software-Grapher. AMS data measured can be directly stored into an Excel file. This is the first time that 3D graph display of AMS ellipsoid is realized and 2D graph of principal direction is displayed at the same time. It is also  convenient to transfer data from sample coordinates to geographical coordinates. Furthermore, the principal susceptibility and  direction can be calculated with 15 directional susceptibilities manually input.

Key words: anisotropy of magnetic susceptibility, AMS ellipsoid, Kappabridge, KLY-4/4S

CLC Number: 

  • P631.2
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