ANALYSIS OF THE DYNAMICS OF COSMIC RAYS AND IONOSPHERIC PARAMETERS DURING PERIODS OF INCREASED SOLAR ACTIVITY AND MAGNETIC STORMS (ACCORDING TO GROUND-BASED OBSERVATION STATIONS)

We applied new methods of data analysis, based on neural networks and wavelet transform. The methods made it possible to allocate abnormal enhancements in cosmic rays level (pre-increases). They can occur 8–20 hours before the onset of strong magnetic storms (we analyzed the events for the period 2010–2015). During the periods of the allocated preconditions in cosmic rays, an anomalous increase in the electron concentration was observed in the ionosphere, which is typical for positive ionospheric storms. The isolated ionospheric anomalies were observed on the eve of strong magnetic storms at different stations with a possible time delay up to a day. During the periods of the main phases of strong magnetic storms, the Forbush decrease effect was observed and the electron concentration in the ionosphere decreased significantly. The obtained results are of interest in space weather problems and can serve as an additional factor in strong magnetic storms prediction. The study was supported by a grant from the Russian Science Foundation, Project № 14-11-00194.

Authors: O. V. Mandrikova, Yu. A. Polozov, T. L. Zalyaev, V. V. Geppener

Direction: Informatics and Computer Technologies

Keywords: Cosmic rays, ionosphere, anomalies, geomagnetic storms, wavelets, neural networks

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