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首页> 外文期刊>Journal of Geophysical Research. Biogeosciences >Radar studies of midlatitude ionospheric plasma drifts
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Radar studies of midlatitude ionospheric plasma drifts

机译：中纬度电离层等离子体漂移的雷达研究

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We use incoherent scatter radar measurements from Millstone Hill and Saint Santin to study the midlatitude F region electrodynamic plasma drifts during geomagnetically quiet and active periods. We present initially a local time, season, and solar flux dependent analytical model of the: quiet time zonal and meridional ExB drifts over these stations. We discuss, for the first time, the Saint Santin drift patterns during solar maximum. We have used these quiet time models to extract the geomagnetic perturbation drifts which were modeled as a function of the time history of the auroral electrojet indices. Our results illustrate the evolution of the disturbance drifts driven by the combined effects of prompt penetration and longer lasting perturbation electric fields. The meridional electrodynamic disturbance drifts have largest amplitudes in the midnight-noon sector. The zonal drifts are predominantly westward, with largest amplitudes in the dusk-midnight sector and, following a decrease in the high-latitude convection, they decay more slowly than the meridional drifts. The prompt penetration and steady state zonal disturbance drifts derived from radar measurements are in good agreement with results obtained from both the ion drift meter data on board title Dynamics Explorer 2 (DE 2) satellite and from the nice Convection Model. [References: 34]
机译：我们使用Millstone Hill和Saint Santin的非相干散射雷达测量来研究地磁安静和活跃期间中纬度F区电动等离子体的漂移。我们最初介绍了一个本地时间，季节和太阳通量相关的分析模型：这些站的安静时间带状和子午式ExB漂移。我们首次讨论了太阳最高峰期间圣桑丁的漂移模式。我们已经使用了这些安静的时间模型来提取地磁扰动漂移，这些漂移是根据极光电喷指数的时间历程进行建模的。我们的结果说明了由快速穿透和更持久的扰动电场共同作用所驱动的扰动漂移的演变。在午夜中午，子午电动势扰动漂移幅度最大。纬向漂移主要是向西，在黄昏至午夜扇形中幅度最大，并且随着高纬度对流的减少，其衰减比经向漂移慢。由雷达测量得出的快速穿透和稳态区域干扰漂移与标题为Dynamics Explorer 2（DE 2）卫星上的离子漂移仪数据以及良好的对流模型所获得的结果非常吻合。 [参考：34]

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