CORRELATION BETWEEN THE SUNSPOT NUMBERS AND GEOMAGNETIC PARAMETERS FOR THE SOLAR CYCLE-24

Purushottam Kumar, Achyut Pandeya

Abstract


In this paper we have studied the correlation between the annual mean values of the sunspot numbers (Rz) and the annual
mean values of the geomagnetic disturbance index-Ap and Geomagnetic activity-Kp indices for the selected period of
2007 to 2017, and shown to be positively correlated. The coefcient of correlation for sunspot number Vs geomagnetic disturbance index-Ap is, r
=0.355 and for sunspot number Vs geomagnetic activity index-Kp is, r = 0.381, and we have concluded that if number of sunspots increases then
geomagnetic disturbance level will be increased, and if number of sunspots decreases then geomagnetic disturbance level will be decreased.


Keywords


Sunspot numbers (Rz), Geomagnetic activity index (Kp), Geomagnetic disturbance index (Ap), Disturbance storm time (Dst).

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