Statistical study of interplanetary condition effect on geomagnetic storms

Details Statistical study of interplanetary condition effect on geomagnetic storms Statistical study of interplanetary condition effect on geomagnetic storms

Dec 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010cosre..48..485y&link_type=abstract

Cosmic Research, Volume 48, Issue 6, pp.485-500

Computer Science

2

Scientific paper

Based on the archive OMNI data for the period 1976-2000 an analysis has been made of 798 geomagnetic storms with D st < -50 nT and their interplanetary sources-large-scale types of the solar wind: CIR (145 magnetic storms), Sheath (96), magnetic clouds MC (62), and Ejecta (161). The remaining 334 magnetic storms have no well-defined sources. For the analysis, we applied the double method of superposed epoch analysis in which the instants of the magnetic storm beginning and minimum of D st index are taken as reference times. The well-known fact that, independent of the interplanetary source type, the magnetic storm begins in 1-2 h after a southward turn of the IMF ( B z < 0) and both the end of the main phase of a storm and the beginning of its recovery phase are observed in 1-2 h after disappearance of the southward component of the IMF is confirmed. Also confirmed is the result obtained previously that the most efficient generation of magnetic storms is observed for Sheath before MC. On the average parameters B z and E y slightly vary between the beginning and end of the main phase of storms (minimum of D st and D {/st *} indices), while D st and D {/st *} indices decrease monotonically proportionally to integral of B z and E y over time. Such a behavior of the indices indicates that the used double method of superposed epoch analysis can be successfully applied in order to study dynamics of the parameters on the main phase of magnetic storms having different duration.

Affiliated with

Also associated with

No associations

Rating

Statistical study of interplanetary condition effect on geomagnetic storms does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Statistical study of interplanetary condition effect on geomagnetic storms, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Statistical study of interplanetary condition effect on geomagnetic storms will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1813287