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地磁场作为电离层电动力学过程的背景磁场,对全球电离层发电机过程以及电离层电场、电流的分布有着决定性的影响.在研究电离层电场经度结构等精细问题时,以往模拟中经常采用的偶极场近似过于粗糙和理想化.基于电离层发电机理论,通过改进原有电离层电场模式,在改良的APEX坐标系下发展了一个电离层发电机模式.该模式较为灵活,地磁场既可采用较为真实的国际地磁参考场(IGRF)也可采用理想的偶极场,中性风场和电导率由经验模式的输出参数计算得出.采用逐线法求解电势的偏微分方程得到中低纬电离层静电势、电场和电流的时空分布.模式较好的再现了电离层电势、电场和赤道电集流的基本结构和形态,可应用于中高层大气、电离层电动力学过程的相关研究。
As the background magnetic field of the ionospheric electrodynamics, the geomagnetic field has a decisive influence on the process of the global ionospheric generator and the distribution of the electric field and the current in the ionosphere. When studying the fine problems such as the longitude structure of the ionospheric electric field, Based on the theory of ionospheric generator, an ionospheric generator mode has been developed in the improved APEX coordinate system by improving the original ionospheric electric field mode. This mode is more flexible. Can adopt the more realistic IGRF and the ideal dipole field, and the neutral wind field and conductivity can be calculated from the empirical mode output parameters. Low-latitude ionospheric electrostatic potential, electric field and current spatiotemporal distribution. Mode reproduces the ionospheric potential, electric field and the basic structure and morphology of the equatorial current can be applied to the upper atmosphere, the ionospheric electrokinetics of the correlation the study.