Volume 6 Issue 2
Apr.  1986
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Gu Shi-fen, Tian Bao-ning, Song Li. Effects of Non-radial Geomagnetic Field Lines on Evaluating Ionospheric Fields and Three-dimensional Current System from Ground Magnetic Data[J]. Journal of Space Science, 1986, 6(2): 102-111. doi: 10.11728/cjss1986.02.102
Citation: Gu Shi-fen, Tian Bao-ning, Song Li. Effects of Non-radial Geomagnetic Field Lines on Evaluating Ionospheric Fields and Three-dimensional Current System from Ground Magnetic Data[J]. Journal of Space Science, 1986, 6(2): 102-111. doi: 10.11728/cjss1986.02.102

Effects of Non-radial Geomagnetic Field Lines on Evaluating Ionospheric Fields and Three-dimensional Current System from Ground Magnetic Data

doi: 10.11728/cjss1986.02.102
  • Received Date: 1985-04-15
  • Rev Recd Date: 1900-01-01
  • Publish Date: 1986-04-24
  • Some improvements are made to the method developed by Kamide (KRM method) in evaluating ionospheric electric field, current and field-aligned currents from ground variations. Taking into account the effects of non-radial geomagnetic field lines on the ionospheric conductivity, a second-order partial differential equation for electric potential is rederived, which will come back to the original form of Kamide's equation when inclination equals to 90°.To show the effects of this improvement, an example is given and the results show a considerable effect of the non-radial field lines even in high latitude auroral regions. At magnetic latitude 67°, the correction by the improvement can be up to 21% for ionospheric current, and up to 10% (4kV) for electric potential. Finally, in this example, the rate of convergence in the iterative procedure increases, too, from 300 times to only 202 times.

     

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