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New technique to diagnose the geomagnetic field based on the single circular current loop model
  • +8
  • Zhaojin Rong,
  • Yong Wei,
  • Masatoshi Yamauchi,
  • Wenyao Xu,
  • Dali Kong,
  • Jun Cui,
  • Chao Shen,
  • Rixiang Zhu,
  • Weixing Wan,
  • Jun Zhong,
  • Lihui Chai
Zhaojin Rong
Key Laboratory of Earth and Planetary Physics, Institute of Geology and Geophysics, Chinese Academy of Sciences

Corresponding Author:[email protected]

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Yong Wei
Institute of Geology and Geophysics, Chinese Academy of Sciences
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Masatoshi Yamauchi
Swedish Institute of Space Physics
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Wenyao Xu
Institute of Geology and Geophysics, Chinese Academy of Sciences
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Dali Kong
Shanghai Astronomical Observatory
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Jun Cui
Sun Yat-sen University
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Chao Shen
Harbin Institute of Technology
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Rixiang Zhu
Institute of Geology and Geophysics, Chinese Academy of Sciences
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Weixing Wan
Institute of Geology and Geophysics,Chinese Academy of Sciences
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Jun Zhong
Institute of Geology and Geophysics, Chinese Academy of Sciences
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Lihui Chai
Institute of Geology and Geophysics, Chinese Academy of Sciences
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Abstract

A quick and effective technique is developed to diagnose the geomagnetic dipole field based on an unstrained single circular current loop model. In comparsion with previous studies, this technique is able to separate and solve the loop parameters successively. With this technique, one can search the optimum full loop parameters quickly, including the location of loop center, the loop orientation, the loop radius, and the electric current carried by the loop, which can roughly indicate the locations, sizes, orientations of the interior current sources. The technique tests and applications demonstrate that this technique is effective and applicable. This technique could be applied widely in the fields of geomagnetism, planetary magnetism and palaeomagnetism. The further applications and constrains are discussed and cautioned.
Nov 2021Published in Journal of Geophysical Research: Solid Earth volume 126 issue 11. 10.1029/2021JB022778