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pure and applied geophysics

, Volume 75, Issue 1, pp 19–30 | Cite as

Interpretation of gravity and magnetic anomalies when observation plane is inclined

  • M. V. Ramanaiah Chowdary
  • A. Roy
Article
  • 58 Downloads

Summary

Not infrequently, in mining geophysics, measurements have to be made on the slopes of a hill that contain mineralisation. In this paper, procedures are evolved for interpreting gravity and vertical component magnetic data collected on such slopes and caused by geological bodies that can be approximated by infinite line pole, point pole, infinite line dipole and point dipole. From sets of theoretical magnetic anomaly curves (not reproduced), graphs have been constructed using characteristic points and are reproduced in Figures 5 to 10 and 12 to 17. These can be used for direct determination of depths, offsets, etc., by using information from suitably chosen field profiles. In the case of gravity, the mass can be computed as usual by a surface integration, provided a correction factor (1/cos2α) is used, α being the angle of the slope.

Keywords

Correction Factor Geophysics Characteristic Point Vertical Component Magnetic Anomaly 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Reference

  1. [1]
    P. A. Paul andA. Roy,Magnetic Interpretation in Uneven Topography Geoexploration (in press, 1968).Google Scholar

Copyright information

© Birkhäuser Verlag 1969

Authors and Affiliations

  • M. V. Ramanaiah Chowdary
    • 1
  • A. Roy
    • 1
  1. 1.National Geophysical Research InstituteHyderabad-7India

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