The first ground based observations of aeronomic phenomena in the South Atlantic Anomaly Region are presented. These data show that enhancements in foF2 and foE can be directlyattributed to precipitated electron energy fluxes in the Anomaly Region. The regular occurrence of particle induced sporadic-E ionization is also presented together with the first measurable 391.4 nm airglow radiation of about 16 R.The first comprehensive survey of energy fluxes carried by energetic particles using satellites is also presented for both daytime and nighttime as well as the seasonal fluctuations. We found that the nocturnally precipitated electron energy fluxes varied between 1 x 10⁻⁴ and 38 x 10⁻⁴erg cm²s⁻¹, depending upon magnetic activity and season, whereas the daytime precipitated electron energy fluxes tended to vary between 1 x 10⁻³ and 8 x 10⁻³ erg cm⁻²s⁻¹, with a tendency to decrease during magnetically active periods. Electron density and temperature contours as well as NO⁺ and 0⁺ ions contours for nighttime are also presented. The main conclusion of the study is that precipitating electrons provide a significant and sometimes dominant source of ionization in the ionosphere over the South Atlantic Anomaly Region.
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机译：介绍了对南大西洋异常地区的空气现象的第一个地面观测。这些数据表明，foF2和foE的增强可以直接归因于异常区域中沉淀的电子能量通量。还介绍了定期发生的粒子诱发的散发E电离的现象，以及首次可测量的约14 R的391.4 nm气辉辐射。还首次对白天和晚上的高能粒子使用卫星携带的能量通量进行了全面调查。由于季节性波动。我们发现，夜间析出的电子能量通量在1 x 10 -3和38 x 10 -erg cm 2 s -1之间变化，这取决于磁活动和季节，而白天的析出电子能量通量倾向于在1 x 10 -3和2 -1之间。 8 x 10 -3 erg cm -2 s -1，在磁激活期间有降低的趋势。还介绍了夜间的电子密度和温度等高线以及NO⁺和0⁺离子等高线。该研究的主要结论是，沉淀电子为南大西洋异常区电离层提供了重要的，有时是主要的电离源。
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