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Plasmaspheric Erosion via Plasmasphere Coupling to Ring Current Plasmas: EUV Observations and ModelingDuring a geomagnetic storm on 24 May 2000, the IMAGE Extreme Ultraviolet (EUV) camera observed a plasmaspheric density trough in the evening sector at L-values inside the plasmapause. Forward modeling of this feature has indicated that plasmaspheric densities beyond the outer wall of the trough are well below model expectations. This diminished plasma condition suggests the presence of an erosion process due to the interaction of the plasmasphere with ring current plasmas. We present an overview of EUV, energetic neutral atom (ENA), and Far Ultraviolet (FUV) camera observations associated with the plasmaspheric density trough of 24 May 2000, as well as forward modeling evidence of the lie existence of a plasmaspheric erosion process during this period. FUV proton aurora image analysis, convolution of ENA observations, and ring current modeling are then presented in an effort to associate the observed erosion with coupling between the plasmasphere and ring-current plasmas.
Document ID
20020068099
Acquisition Source
Marshall Space Flight Center
Document Type
Conference Paper
Authors
Adrian, M. L. (NASA Marshall Space Flight Center Huntsville, AL United States)
Gallagher, D. L. (NASA Marshall Space Flight Center Huntsville, AL United States)
Khazanov, G. V. (NASA Marshall Space Flight Center Huntsville, AL United States)
Chsang, S. W. (NASA Marshall Space Flight Center Huntsville, AL United States)
Liemohn, M. W. (NASA Marshall Space Flight Center Huntsville, AL United States)
Perez, J. D. (NASA Marshall Space Flight Center Huntsville, AL United States)
Green, J. L. (NASA Marshall Space Flight Center Huntsville, AL United States)
Sandel, B. R. (NASA Marshall Space Flight Center Huntsville, AL United States)
Mitchell, D. G. (NASA Marshall Space Flight Center Huntsville, AL United States)
Mende, S. B. (NASA Marshall Space Flight Center Huntsville, AL United States)
Six, N. Frank
Date Acquired
August 20, 2013
Publication Date
January 1, 2002
Subject Category
Geophysics
Meeting Information
Meeting: American Geophysical Union Spring Meeting
Location: Washington, DC
Country: United States
Start Date: May 28, 2002
End Date: May 31, 2002
Sponsors: American Geophysical Union
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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