The First Observation of Additional Ionospheric Layers Over Arecibo Using an Incoherent Scatter Radar
The First Observation of Additional Ionospheric Layers Over Arecibo Using an Incoherent Scatter Radar
复制标题
用非相干散射雷达对阿雷西博上空附加电离层的首次观测
DOI：
10.1029/2021gl097019
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发表时间：
2022-03
影响因子：
5.2
通讯作者：
Yun Gong;Xiedong Lv;Shaodong Zhang;Qihou H. Zhou;Zheng Ma
中科院分区：
文献类型：
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作者：
Yun Gong;Xiedong Lv;Shaodong Zhang;Qihou H. Zhou;Zheng Ma
我们分析了额外的电离层F区层，即阿雷西博(18.3°N，32°N地磁纬度)的F3层。F3层通常在F2层上方的低地磁纬度观测到。这是在倾角为43.6°的阿雷西博首次报道F3层。阿雷西博非相干散射雷达分别在2016年11月30日、12月1日和12月2日03：00-07：00、04：00-06：00和02：00-06：30LT期间，在大约400公里处捕获了三个F3层事件。观测到的层的形成很大程度上是由于垂直离子漂移的高度梯度的变化，离子漂移将电子聚集在大约400公里处。仿真结果进一步验证了该生成机制。垂直离子漂移的高度变化主要是由于西向电场的影响。
We present an analysis of additional ionospheric F‐region layers, the F3 layers at Arecibo (18.3°N, 32°N geomagnetic latitude). The F3 layer is often observed in low geomagnetic latitudes observed above the F2 layer. This is the first time that the F3 layer is reported at Arecibo, which has a dip angle of 43.6°. Three F3 layer events were captured by the Arecibo incoherent scatter radar at around 400 km in the period of 03:00–07:00 LT, 04:00–06:00 LT, and 02:00–06:30 LT on 30 November, 1 December, and 2 December 2016, respectively. The formation of the observed layers is largely due to the change of the height gradient of the vertical ion drift, which accumulates the electrons at around 400 km. This generation mechanism is further verified by the simulation. The altitudinal variation of the vertical ion drift is mainly due to the effect of the westward electric field.