Ionospheric disturbance statistics according to the Swarm satellite mission in 2014

Abstract

In the present work, based on the database of magnetic field indices Kp, AE, and Dst, we consider the relationship between geomagnetic activity and ionospheric scintillation indices S4 and RODI based on in-situ satellite measurements. 37 events with quiet and disturbed geomagnetic conditions during 2014 were selected and analyzed. The correlation coefficients of the scintillation indices with high-latitude AE and low-latitude Dst are obtained. Thus, in periods of disturbed geomagnetic conditions, the RODI10s and S4 indices are, in principle, equally related to the high-latitude AE index (with a small, up to 4% in the number of realizations, the advantage of the RODI index) In periods with quiet geomagnetic conditions, the situation changes - in 17% of cases the S4 index is better reflects a relationship with mid-latitude Dst than the RODI10s index. The indicated relationship means the presence of a linear correlation of more than 0.3 between the processes.