Solar cycle distribution of strong solar proton events and the related solar-terrestrial phenomena
Solar cycle distribution of strong solar proton events and the related solar-terrestrial phenomena
复制标题
DOI：
10.1007/s10509-014-1964-1
复制
发表时间：
2014-05
影响因子：
1.9
通讯作者：
G. Le;Xingxing Yang;L. Ding;Yonghua Liu;Yangping Lu;Minhao Chen
中科院分区：
文献类型：
--
作者：
G. Le;Xingxing Yang;L. Ding;Yonghua Liu;Yangping Lu;Minhao Chen
我们研究了21-23个太阳周期中强太阳质子事件(SPE，峰值通量≥1000Pfu)的太阳周期分布以及与强SPE相关的日地现象。结果表明，在这段时间内共记录到37个强SPE，其中20个强SPE起源于超活动区，28个强SPE伴随着X级耀斑。大多数强SPE与地面增强(GLE)事件无关。大多数强SPE出现在太阳活动周期的下降阶段。太阳活动周期越弱，出现在太阳活动周期下降阶段的强SPES所占比例越高。在一个太阳周期内出现的强SPE的数量与太阳周期大小的相关性很差。SPE的强度高度依赖于其源区的位置，超SPE(≥20000 pfu)分布在太阳圆盘中心周围。超级SPE总是伴随着由相关的日冕物质抛射和巨大的地磁暴驱动的快速激波。最强GLE事件的震源位置分布在连通区。与超GLE事件相关的SPE(峰值增加率≥为100%)，其峰值通量远低于10000个Pfu，不伴随强烈的地磁暴。
We investigated the solar cycle distribution of strong solar proton events (SPEs, peak flux ≥1000 pfu) and the solar-terrestrial phenomena associated with the strong SPEs during solar cycles 21–23. The results show that 37 strong SPEs were registered over this period of time, where 20 strong SPEs were originated from the super active regions (SARs) and 28 strong SPEs were accompanied by the X-class flares. Most strong SPEs were not associated with the ground level enhancement (GLE) event. Most strong SPEs occurred in the descending phases of the solar cycles. The weaker the solar cycle, the higher the proportion of strong SPES occurred in the descending phase of the cycle. The number of the strong SPEs that occurred within a solar cycle is poorly associated with the solar cycle size. The intensity of the SPEs is highly dependent of the location of their source regions, with the super SPEs (≥20000 pfu) distributed around solar disk center. A super SPE was always accompanied by a fast shock driven by the associated coronal mass ejection and a great geomagnetic storm. The source location of strongest GLE event is distributed in the well-connected region. The SPEs associated with super GLE events (peak increase rate ≥100%) which have their peak flux much lower than 10000 pfu were not accompanied by an intense geomagnetic storm.