Flare index of solar activity and global geomagnetic variability

摘要

The associations of solar flare index (SFI) and global geomagnetic variability (A(p)) with annual mean sunspot number (SSN) during the period 1986-96 have been analysed. It is found that the SFI in the northern hemisphere, southern hemisphere and total disk surface of the sun shows close correspondence with the SSN on long- and short-term basis, An internal association between SSN, SFI and A, has also been analysed. We have found that A(p) poorly correlated with SFI and SSN during the aforesaid period. [References: 7]