IMAGE Observes Unusual Plasmaspheric Structures.

The IMAGE EUV imager has observed several instances where the outer plasmasphere is populated by multiple, radially aligned structures resembling "plasmaspheric fingers". One possible explanation being explored is the development of a ULF standing wave pattern that causes the observed finger-like plasma distribution.

(2001: D.L. Gallagher and M.L. Adrian, R. H. Comfort, .L. Green, B.R. Sandel )