耀斑日面位置与磁扰关系的不对称性

本文探討了耀斑日面位置与磁扰关系的不对称性。經分析研究,得到（βγ+γ+β_f）型活动区耀斑的磁扰效应有明显的南北不对称性,但（β_p+β）型活动区耀斑却无此南北不对称效应。在太阳南半球,不論那种磁場类型活动区,发生在西边的耀斑要比东西或中心子午线附近耀斑的影响强,而在北半球只有（β_p+β）型活动区耀斑才有这种东西不对称性效应。在最近三个太阳黑子周內,这些不对称是經常存在的,而在春秋季表現最为明显。

ON THE ASYMMETRICAL EFFECT OF FLARE POSITION UPON GEOMAGNETIC ACTIVETY

Flares of importance≥Ⅱ~+ are grouped according to their heliographic position and magnetic class of the active regions. By means of superposed-epoch method, we have calculated the mean daily frequency of Kp≥6 under different conditions. It is found that, for the magnetic group βγ+γ+β_f solar flares in northern hemisphere produce stronger corpulscular effect than those in southern hemisphere, but for the flares in β_p+β regions no such hemispheric asymmetry is found. Also, in southern hemisphere the western flares have stronger effect than the central and eastern ones, but in northern hemisphere only those flares in β_p+β regions have this E-W asymmetry. Those asymmetrical relations appear in all of the last three solar cycles, and it is especially conspicuous during equinoxes.