DIAGNOSTICS OF THE SOURCES OF GEOMAGNETIC VARIATIONS FOR THE SUPERSTORM OF MAY 10–13, 2024

The paper presents the results of the analysis of magnetospheric-ionospheric sources of geomagnetic variations for the superstorm of May 10–13, 2024. This event occurred at the maximum of the 25th cycle of the Wolfe solar activity and at the beginning of the 100-year cycle of geomagnetic activity. During this period, superstorms similar to the storms of October–November 2003 will occur. To analyze the sources of variations, 1-minute values of Polish and Ukrainian geomagnetic observatories (Table 1) were used. The sources of geomagnetic variations were identified based on the data on the indices of geomagnetic activity Dst, Kp, AL, AU, AE and model calculations. The influence of magnetospheric sources and auroral ionospheric electric currents in the middle latitudes is diagnosed. The contribution of each source is calculated.