Abstract
The development of geomagnetic storms is mainly controlled by external heliospheric factors, which in turn depend on the conditions on the Sun. Magnetospheric disturbances can be isolated, repeated, multiple, or turbulent, depending on these conditions. Most geomagnetic storms develop complexly and are characterized by the existence of one or several side extrema before or after the main one. This is mainly related to the superposition of individual disturbances that follow immediately one after another from the Sun into the heliosphere or to the internal structure and dynamics of disturbances in the corona. The geomagnetic storms from the APEV extensive database for cycle 23 of solar activity, which were combined into 227 events, were analyzed in order to reveal the statistics based on single and multiple magnetospheric disturbances. The results are presented as histograms, graphs, tables, and empirical formulas for the total number of intensifications in all events and depending on different geomagnetic storm development phases, amplitude, and duration.
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Original Russian Text © I.S. Veselovsky, A.T. Lukashenko, 2013, published in Geomagnetizm i Aeronomiya, 2013, Vol. 53, No. 5, pp. 635–644.
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Veselovsky, I.S., Lukashenko, A.T. Statistics of isolated and complex geomagnetic storms based on the APEV database for cycle 23 of solar activity. Geomagn. Aeron. 53, 595–603 (2013). https://doi.org/10.1134/S0016793213050162
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DOI: https://doi.org/10.1134/S0016793213050162