A Simulation of the Mid-and Low-latitude Ionospheric Electric Fields |
| |
Authors: | YU Tao MAO Tian XIA Chunliang WAN Weixing |
| |
Institution: | 1.National Satellite Meteorological Center, China Meteorological Administration, Beijing 1000812.China University of Geosciences, Wuhan 4300743.Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029 |
| |
Abstract: | A theoretical model of ionospheric electric fields at mid-and low-latitudes is developed.In the geomagnetic dipolar coordinate system,the ionospheric dynamo equations were solved,and the ionospheric electric potential and electric field were derived respectively.Major parameters for the model inputs,such as the neutral winds,the densities and temperatures of electron,ions and neutrals,are obtained from empirical models.The global ionospheric electrical potential and field at mid-and low-latitudes derived from our model are largely in agreement with the results presented by other authors and the empirical model.Using our model,it is found that the diurnal component of the HWM93 wind mainly contributed to the formation of the vertical electric field,while the semidiurnal component mainly contributed to the zonal electric field.Finally,by adjustment of the input F region winds and conductivities,most discrepancies between our model and the empirical one can be eliminated,and it is proved that the F region dynamo is the most significant contribution to the electric fields. |
| |
Keywords: | Ionosphere dynamo Simulation Tides Zonal electric field evening enhancement |
本文献已被 CNKI 等数据库收录! |
| 点击此处可从《空间科学学报》浏览原始摘要信息 |
| 点击此处可从《空间科学学报》下载免费的PDF全文 |
|