Acceleration and Extreme Distortion Within the Van Allen Radiation Belts During the Halloween Solar

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Acceleration and Extreme Distortion Within the
Van Allen Radiation Belts During the Halloween
Solar Storms of 2003

• D.N. Baker, S. P. Monk, S.G. Kanekal, X. Li
• Laboratory for Atmospheric and Space Physics
• University of Colorado-Boulder
• J. Goldstein, J.L. Burch
• Southwest Research Institute, San Antonio

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October 2003 Events
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October-November 2003 Storms
SOHO/LASCO CMEs and the storms they produced
10/28 ? - 310 nT 10/29 ? - 347 nT
11/02 ? - 40 nT 11/04 ? only SC
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High-Energy Electrons 17 Oct.-1 Dec.
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Day-to-Day Variation of the Radiation Belts
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Selected Days Outer Belt Properties
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EUV Images of the Plasmasphere
Global EUV He Image
Plasmasphere
He 15
plasmasphere
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Sunward Flux in TEC/Plasmasphere PlumeMarch 31,
2001
Ground-Based GPS Maps TEC Plume
Foster et al., GRL 2002
Direct Observation of Velocity and Flux by
Millstone Hill ISR
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Aurora Seen in Colorado
20 Nov. 2003
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November 20, 2003 SED Plume
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November 20, 2003 SED Plume
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Regions of Wave-Particle Interactions
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Conclusions

• The October-November 2003 solar activity produced
  spectacular effects in Earths radiation
  environment
• The radiation belt slot region at L 2 3 was
  filled by relativistic electrons to an
  unprecedented degree
• SAMPEX, IMAGE and other data give a clear global
  picture of the plasmasphere and radiation belt
  enhancement and decay
• Several important spacecraft operational
  anomalies were apparently associated with
  radiation environment changes

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High-Energy Electrons 17 Oct.-1 Dec.
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GEO Solar Particle Measurements
Period of main DoD s/c anomalies
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