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Three-dimensional transformation of magnetization direction and magnetic field component at low latitudes based on vertical relationship

  • Magnetic Exploration Methods
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Abstract

The transformation of the magnetization direction and the magnetic field component is one of the important methods in magnetic data processing and transformation, which can be conducted in both wavenumber and spatial domains. The transformation method in the wavenumber domain has simpler processing expression and higher processing efficiency than in the spatial domain; however, they are unstable at low latitude. In this paper, the conclusion that the sum is 0 of two vertical magnetic field components (magnetization inclinations are also perpendicular) in 2D is used for the 3D transformation of the magnetization direction and the magnetic field component. In addition, the transformation method at low latitudes based on vertical relationship (VMT) is proposed, which is an iterative algorithm that converts the transformation of the magnetization direction and the magnetic field component at the low latitude into the high latitude. This method restrains the instability of transformation of constant and variable magnetization direction and magnetic field components in low latitudes. The accuracy, stability, and practicality are verified from synthetic models and real data.

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Acknowledgments

The authors thank the reviewers for their comments and the editor for editing the paper. This study was supported by the subject “Study on the Comprehensive Processing and Interpretation Method and Software Development for Aerial Geophysics (No. 2017YFC0602202)” from National major Research and Development Project of China (No. 2017YFC0602200).

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Authors and Affiliations

  1. Institute of Gravity and Magnetic Technology, Chang’an University, Xi’an, 710054, China

    He Tao, Xiong Sheng-Qing & Wang Wan-Yin

  2. National Engineering Research Center of offshore Oil and Gas Exploration, Beijing, 100028, China

    He Tao & Wang Wan-Yin

  3. China Aero Geophysical Survey and Remote Sensing Center for Natural Resources, Beijing, 100083, China

    Xiong Sheng-Qing

  4. Department of Earth Sciences, Memorial University of Newfoundland, St. John’s, Newfoundland, AlB 3X5, Canada

    He Tao

Authors
  1. He Tao
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  2. Xiong Sheng-Qing
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  3. Wang Wan-Yin
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Corresponding author

Correspondence to Wang Wan-Yin.

Additional information

He Tao is a Ph.D. candidate at Chang’an University. His research interests are gravity and magnetic theory methods and application research

Wang Wan-Yin, Professor, earned his Ph.D. in 2009 from the Chang’an University in Xi’an. He is currently teaching at Chang’an University. His research interests include the processing, inversion, and interpretation of gravity and magnetic potential fields.

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Tao, H., Sheng-Qing, X. & Wan-Yin, W. Three-dimensional transformation of magnetization direction and magnetic field component at low latitudes based on vertical relationship. Appl. Geophys. 19, 91–106 (2022). https://doi.org/10.1007/s11770-022-0928-4

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  • DOI: https://doi.org/10.1007/s11770-022-0928-4

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