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Indian Journal of Radio & Space Physics (IJRSP) >
IJRSP Vol.38 [2009] >
IJRSP Vol.38(5) [October 2009] >
| Title: | Variations of geomagnetic Dst, auroral indices and cosmic ray intensity during 28-31 Oct 2003 Halloween events |
| Authors: | Kane, R P |
| Keywords: | Geomagnetic index variations
Interplanetary storm
Halloween event
Auroral indices
Geomagnetic storm
Cosmic ray intensity |
| Issue Date: | Oct-2009 |
| Publisher: | CSIR |
| PACS No.: | 91.25.Rt; 96.50.sh; 94.30.Lr |
| Abstract: |
During 28-31 Oct 2003, there was intense interplanetary storm activity
(Halloween events). A major storm started at about 0400-0600 hrs UT on 29 Oct
2003, reflected in extreme values of interplanetary parameters and geomagnetic
index Dst. While few hours preceding 0400 hrs UT, it was essentially quiet but
the auroral indices AL,
AU, AE were not quiet and showed
moderate increases. Thus, at least for this gigantic super fast storm (velocity
of the solar wind disturbance exceeding 2000 kms-1), auroral indices
seemed to be precursors with an antecedence of a few hours. This needs to be
checked for very strong storms in future, probably after 2010, when cycle 24
sunspot activity will be in full swing |
| Page(s): | 245-253 |
| ISSN: | 0975-105X (Online); 0367-8393 (Print) |
| Source: | IJRSP Vol.38(5) [October 2009]
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