STARE: Observations of a field-aligned line current

Autor:	Erling Nielsen, H. Perplies, I. Pardowitz, Pekka Janhunen, L. Bemmann, M. Bruns, A. Huuskonen
Rok vydání:	1999
Předmět:	Drift velocity Field (physics) Geophysics Physics::Geophysics law.invention Earth's magnetic field law Physics::Space Physics General Earth and Planetary Sciences Flux transfer event Magnetopause Clockwise Ionosphere Radar Geology
Zdroj:	Geophysical Research Letters. 26:21-24
ISSN:	0094-8276
DOI:	10.1029/1998gl900252
Popis:	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.
Databáze:	OpenAIRE
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