On the relation between the Solar Flare Effects and associated Geomagnetic Storms
Nagai, M.
Abstract
It has been suggested that the occurrence of a solar flare effect (sfe) in the magnetogram is an indication that the flare is capable of producing a magnetic storm which will usually follow within the 2 or 3 days.
In here，evidence is examined which suggests that either there is no increase of magnetic activity due to a sfe or that the increase is a significant event. A statistical investigation of the connection between sfe and magnetic storm in this present analysis gives positive result in some 32% of sfe which shows increase of magnetic activity within the 4days，a gainst two studies of D. Van Sabben (1953) and R. A. Wattson (1957).
