Abstract This work is a continuation of investigation [1] of the behavior of the solar wind’s and interplanetary magnetic field’s parameters near the onset of geomagnetic storms for various types of solar wind streams. The data of the OMNI base for the 1976–2000 period are used in the analysis. The types of solar wind streams were determined, and the times of beginning (onsets) of magnetic storms were distributed in solar wind types as follows: CIR (121 storms), Sheath (22 storms), MC (113 storms), and “uncertain type” (367 storms). The growth of variations (hourly standard deviations) of the density and IMF magnitude was observed 5–10 hours before the onset only in the Sheath. For the CIR-, Sheath-and MC-induced storms the dependence between the minimum of the IMF B z-component and the minimum of the D st -index, as well as the dependence between the electric field E y of solar wind and the minimum of the D st -index are steeper than those for the “uncertain” solar wind type. The steepest D st vs. B z dependence is observed in the Sheath, and the steepest D st vs. E y dependence is observed in the MC.
Statistical investigation of Heliospheric conditions resulting in magnetic storms: 2
Cosmic Research ; 45 , 6 ; 461-470
2007-12-01
10 pages
Article (Journal)
Electronic Resource
English
Statistical investigation of heliospheric conditions resulting in magnetic storms
Springer Verlag | 2007
|Statistical investigation of heliospheric conditions resulting in magnetic storms
Online Contents | 2007
|Statistical investigation of Heliospheric conditions resulting in magnetic storms: 2
Online Contents | 2007
|Heliospheric Flows of Neutrals and Pick-Up Ions Resulting from Alternative Plasma Interfaces
British Library Conference Proceedings | 1995
|Heliospheric Flows of Neutrals and Pick-Up Ions Resulting from Alternative Plasma Interfaces
Online Contents | 1995
|