First medium energy neutral atom (MENA) images of earth's magnetosphere during substorm and storm-time

C. J. Pollock, K. Asamura, M. M. Balkey, J. L. Burch, H. O. Funsten, M. Grande, M. Gruntman, M. Henderson, J. M. Jahn, M. Lampton, M. W. Liemohn, D. J. McComas, T. Mukai, S. Ritzau, M. L. Schattenburg, E. Scime, R. Skoug, P. Valek, M. Wüest

Research output: Contribution to journalArticlepeer-review

51 Scopus citations

Abstract

Initial ENA images obtained with the MENA imager on the IMAGE observatory show that ENAs emanating from Earth's magnetosphere at least crudely track both Dst and Kp. Images obtained during the storm of August 12, 2000, clearly show strong ring current asymmetry during storm main phase and early recovery phase, and a high degree of symmetry during the late recovery phase. Thus, these images establish the existence of both partial and complete ring currents during the same storm. Further, they suggest that ring current loss through the day side magnetopause dominates other loss process during storm main phase and early recovery phase.

Original languageEnglish (US)
Pages (from-to)1147-1150
Number of pages4
JournalGeophysical Research Letters
Volume28
Issue number6
DOIs
StatePublished - Mar 15 2001
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Geophysics
  • Earth and Planetary Sciences(all)

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