Pc 5 micropulsation resonance regions observed with the STARE radar
Pc 5 micropulsation resonance regions observed with the STARE radar
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用 STARE 雷达观察到的 Pc 5 微脉动共振区域
DOI：
10.1029/ja087ia10p08167
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发表时间：
1982
期刊：
影响因子：
--
通讯作者：
E. Poulter
中科院分区：
文献类型：
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作者：
E. Poulter
最近步行者（1980）提出了共振Pc 5脉动空间变化的具体理论预言。步行者等人（1979年）曾成功地用环形模共振描述了STARE雷达对电离层脉动电场的观测。在本文中，我们考虑一个合适的方法提取较小的极向分量的STARE数据和比较所得到的振幅和相位信息与理论预测。观测到的环向和极向分量与步行者的预测是合理的一致，这是基于这样的想法，即这些脉动产生的Kelvin-Helmholz不稳定性在磁层顶。
Specific theoretical predictions of the spatial variation of resonant Pc 5 pulsations have recently been presented by Walker (1980). STARE radar observations of the pulsation electric fields in the ionosphere have been successfully described in terms of a toroidal mode resonance by Walker et al. (1979). In the present paper we consider a suitable method for extracting the smaller poloidal component from the STARE data and compare the resulting amplitude and phase information with the theoretical predictions. The observed toroidal and poloidal components are found to be in reasonable agreement with Walker's predictions, which are based on the idea that these pulsations are generated by the Kelvin-Helmholz instability at the magnetopause.