Astronomy and Astrophysics – Astronomy
Scientific paper
Nov 2002
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002geoji.151..534h&link_type=abstract
Geophysical Journal International, Volume 151, Issue 2, pp. 534-542.
Astronomy and Astrophysics
Astronomy
1
Electromagnetic Induction, Electromagnetic Methods, Geomagnetically Induced Currents, Gic, Image Principle, Space Weather
Scientific paper
An application of the electromagnetic exact image theory (EIT) for the calculation of electric and magnetic fields at the Earth's surface produced by an ionospheric line current with a non-zero divergence is presented. The complete EIT requires a large amount of computation, which can be reduced by using the two low-frequency approximations proposed here. Some examples are shown, with exact reference data obtained by using the Fast Hankel Transform for numerical computations. Limitations of the presented EIT method are discussed, e.g. the loss of accuracy of the other approximation at lower frequencies and the error in the horizontal electric field strength value. The EIT-based approximation is related to the well-known Wait's complex image method (CIM), but can be applied to currents with non-zero divergence, too, as demonstrated in this paper.
Hanninen Jyrki
Lindell Ismo V.
Pirjola Risto J.
No associations
LandOfFree
Application of the exact image theory to studies of ground effects of space weather does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Application of the exact image theory to studies of ground effects of space weather, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Application of the exact image theory to studies of ground effects of space weather will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-740883