TY - JOUR
T1 - Energetic particle acceleration during a major magnetic storm
AU - Kerttula, R.
AU - Mursula, K.
AU - Asikainen, T.
AU - Friedel, R.
AU - Baker, D.
AU - Søraas, F.
AU - Fennell, J. F.
AU - Blake, J. B.
AU - Grande, M.
N1 - Funding Information:
The Academy of Finland is acknowledged for financial support. National Oceanic and Atmospheric Administration (NOAA), US Department of Commerce, is acknowledged for NOAA satellite data.
Copyright:
Copyright 2019 Elsevier B.V., All rights reserved.
PY - 2005
Y1 - 2005
N2 - We study the global properties of energetic (>30 keV) particles during the main and early recovery phase of a major magnetic storm of March 31, 2001, using data of the NOAA 15 and 16 and the CLUSTER satellites. During the storm main phase the ring current energetic electron and ion fluxes were increased by nearly two orders of magnitude, and the flux maxima were shifted to below L = 3. The maximum ion fluxes were observed at about 07 UT, coinciding with the minimum Dst. However, the highest fluxes of energetic electrons were observed only at about 16-18 UT, indicating significant differences in the acceleration of energetic electrons and ions during the storm. We suggest that the ion maximum at about 07 UT was due to field-aligned acceleration of ions from the ionosphere whereas the electron maximum at 16-18 UT was due to a large injection from the nightside.
AB - We study the global properties of energetic (>30 keV) particles during the main and early recovery phase of a major magnetic storm of March 31, 2001, using data of the NOAA 15 and 16 and the CLUSTER satellites. During the storm main phase the ring current energetic electron and ion fluxes were increased by nearly two orders of magnitude, and the flux maxima were shifted to below L = 3. The maximum ion fluxes were observed at about 07 UT, coinciding with the minimum Dst. However, the highest fluxes of energetic electrons were observed only at about 16-18 UT, indicating significant differences in the acceleration of energetic electrons and ions during the storm. We suggest that the ion maximum at about 07 UT was due to field-aligned acceleration of ions from the ionosphere whereas the electron maximum at 16-18 UT was due to a large injection from the nightside.
KW - Energetic particle boundaries
KW - Energetic particle injections
KW - Magnetic storm
UR - http://www.scopus.com/inward/record.url?scp=27844486974&partnerID=8YFLogxK
U2 - 10.1016/j.asr.2004.03.023
DO - 10.1016/j.asr.2004.03.023
M3 - Article
AN - SCOPUS:27844486974
SN - 0273-1177
VL - 36
SP - 1835
EP - 1839
JO - Advances in Space Research
JF - Advances in Space Research
IS - 10
ER -