STARE: Observations of a field‐aligned line current | Zendy

Nielsen E. | Zendy; Bruns M. | Zendy; Pardowitz I. | Zendy; Perplies H. | Zendy; Bemmann L. | Zendy; Janhunen P. | Zendy; Huuskonen A. | Zendy

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STARE: Observations of a field‐aligned line current

Author(s) -

Nielsen E.,

Bruns M.,

Pardowitz I.,

Perplies H.,

Bemmann L.,

Janhunen P.,

Huuskonen A.

Publication year - 1999

Publication title -

geophysical research letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.007

H-Index - 273

eISSN - 1944-8007

pISSN - 0094-8276

DOI - 10.1029/1998gl900252

Subject(s) - ionosphere , earth's magnetic field , current (fluid) , radar , geophysics , field line , line (geometry) , magnetopause , physics , field (mathematics) , incoherent scatter , geology , magnetosphere , magnetic field , computer science , telecommunications , geometry , mathematics , quantum mechanics , thermodynamics , pure mathematics

For the first time a magnetospheric line current entering the ionosphere has been unambiguously observed. The observation was made with STARE ( = Scandinavian Twin Auroral Radar Experiment), a ground based coherent radar system, which has been updated with modern computer technique, and recently taken into operation. A counter clockwise turning swirl of ionospheric electron drift velocities is synonymous with the presence of a line current flowing along the geomagnetic field lines into the ionosphere. A Flux Transfer Event on the magnetopause has been predicted to connect to the ionosphere via a line current.

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