Specific interplanetary conditions for CIR-, Sheath-, and ICME-induced geomagnetic storms obtained by double superposed epoch analysis

Abstract

The comparison of specific interplanetary conditions for 798 magnetic storms with Dst < -50 nT for the period 1976-2000 was made on the basis of the OMNI archive data.We categorized various large-scale types of solar wind as interplanetary drivers of storms: corotating interaction region (CIR), Sheath, interplanetary CME (ICME) including magnetic cloud (MC) and Ejecta, separately MC and Ejecta, and "Indeterminate" type. The data processing was carried out by the method of double superposed epoch analysis which uses two reference times (onset of storm and the minimum Dst index) and make a re-scaling of main phase of storm a such way that after this transformation all storms have equal durations of main phase in new time reference frame. This method reproduced some well-known results and allowed us to obtain some new results. Specifically, obtained results demonstrate high importance of Sheath in generation of magnetic storms as well as a significant differences in properties of MC and Ejecta and in their geoeffectiveness.

21 pages, 9 figures, 1 table, submitted to J. of Advances in Space Research on 29 July, 2009 for Special Issue "Space Weather Advances"

References in corpus (1)

• Comment on "A statistical comparison of solar wind sources of moderate and intense geomagnetic storms at solar minimum and maximum" by Zhang, J.-C., M. W. Liemohn, J. U. Kozyra, M. F. Thomsen, H. A. Elliott, and J. M. Weygand, JGR, 2006

Cited by in corpus (18)

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• Interplanetary drivers of the magnetospheric disturbances: A brief review of incorrect approaches
• Properties of the Sheath Regions of Coronal Mass Ejections with or without Shocks from STEREO in situ Observations near 1 AU
• Dynamics of large-scale solar-wind streams obtained by the double superposed epoch analysis. 4. Helium abundance
• Recovery phase of magnetic storms induced by different interplanetary drivers
• Can we estimate the intensities of great geomagnetic storms($\Delta$SYM-H$\le -$200 nT) by Burton equation or by O'Brien and McPherron equation?
• Dynamics of Large Scale Solar Wind Streams Obtained by the Double Superposed Epoch Analysis: 5. Influence of the Solar Activity Decrease
• Dependence of the cross polar cap potential saturation on the type of solar wind streams
• Geomagnetic storm forecasting from solar coronal holes
• Dynamics of large-scale solar-wind streams obtained by the double superposed epoch analysis. 3. Deflection of speed vector
• Characteristics and development of the main phase disturbance in geomagnetic storms (Dst $\le$ -50 nT)
• Whether duration of the recovery phase of magnetic storm depends on the development rate of storm at its main phase?