The neutral wind dynamo contributes significantly to the ionospheric electrodynamics, and the variation of the neutral winds thus affects the ionosphere. Here we study the effects of the seasonal variation of the winds in a realistic Earth main field. The two-dimensional ionospheric dynamo equation is expressed in the framework of a revision of the International Geomagnetic Reference Field (IGRF) under the assumptions of equipotential field lines and conservation of current. A revision of IGRF and typical u...
【英文摘要】
The neutral wind dynamo contributes significantly to the ionospheric electrodynamics, and the variation of the neutral winds thus affects the ionosphere. Here we study the effects of the seasonal variation of the winds in a realistic Earth main field. The two-dimensional ionospheric dynamo equation is expressed in the framework of a revision of the International Geomagnetic Reference Field (IGRF) under the assumptions of equipotential field lines and conservation of current. A revision of IGRF and typical u...
【基金】
Supported by National Natural Science Foundation of China (Grant Nos. 40674092, 40890163);
the Foundation of Key Project of Chinese Academy of Sciences (Grant No. KJCX2-YW-T13-3)
【更新日期】
2009-10-20
【分类号】
P425.4
【正文快照】
By neglecting pressure gradient in the magnetosphere and focusing on closed magnetic field lines, the electro- dynamic coupling between the magnetosphere and the ionosphere-thermosphere system is commonly reduced to an ionospheric dynamo. In this ionosphe
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