Solar cycle variation in the subauroral electron temperature enhancement: Comparison of AE‐C and DE 2 satellite observations
Solar cycle variation in the subauroral electron temperature enhancement: Comparison of AE‐C and DE 2 satellite observations
复制标题
亚极光电子温度增强的太阳周期变化：AE-C和DE 2卫星观测结果的比较
DOI：
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发表时间：
1991
期刊：
影响因子：
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通讯作者：
L. H. Brace
中科院分区：
文献类型：
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作者：
M. Fok;J. Kozyra;L. H. Brace
亚极光区电子温度升高是表明磁层能量传输以及电离层响应的现象之一。本研究通过比较大气探测器C（AE - C）卫星在太阳活动极小期（1974年和1977年）对亚极光区温度峰值的观测结果以及动力学探测器2（DE 2）卫星在太阳活动极大期（1981 - 1982年）的类似观测结果，探讨了亚极光区电子温度（Te）峰值在太阳活动周期中的变化。足以产生可观测的稳定极光红（SAR）弧发射的电子温度峰值在太阳活动极大期比在太阳活动极小期更频繁地出现，但这些峰值的大小和位置随磁活动的变化在太阳活动周期中并没有显著改变。这些结果将根据电离层和磁层能量源在太阳活动周期中的变化进行讨论。
The elevation of the subauroral electron temperature is one of the phenomena showing the energy transfer from the magnetosphere and the response of the ionosphere. The present study addresses solar cycle variations in the subauroral Te peak by comparing observations of the subauroral peak by the Atmosphere Explorer C (AE-C) satellite near solar minimum (1974 and 1977) with similar observations by the Dynamics Explorer 2 (DE 2) satellite near solar maximum (1981-1982). Electron temperature peaks with magnitudes sufficient to produce observable stable auroral red (SAR) arc emissions occurred more frequently during solar maximum than in solar minimum but the variation in the magnitudes and positions of these peaks with magnetic activity did not change significantly with solar cycle. These results will be discussed in terms of the solar cycle changes in the ionosphere and magnetospheric energy source.