On the cause of northward magnetic field along the negative X axis during magnetospheric substorms |
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| Authors: | Y Kamide F Yasuhara S-I Akasofu |
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| Institution: | Geophysical Institute, University of Alaska, Fairbanks, Alaska 99701, U.S.A. |
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| Abstract: | The magnetic fields produced by a three-dimensional current system, consisting of a flow into the morning part of the auroral oval along tail-like field lines, along the auroral oval and out from the evening part of the oval along tail-like field lines, are computed. It is demonstrated that the major parts of the well-known ‘positive bay’ in low latitudes on the Earth's surface, the positive H variation at the synchronous distance and the positive Bs variation along the magnetotail during magnetospheric substorms can be caused by the proposed current system. |
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