THE ELECTRODYNAMICS OF A DRIFTING AURORAL ARC

Authors
LEWIS RV WILLIAMS PJS JONES GOL OPGENOORTH HJ PERSSON MAL
Citation
Rv. Lewis et al., THE ELECTRODYNAMICS OF A DRIFTING AURORAL ARC, Annales geophysicae, 12(5), 1994, pp. 478-480
Citations number
13
Categorie Soggetti
Astronomy & Astrophysics","Geosciences, Interdisciplinary","Metereology & Atmospheric Sciences
Journal title
Annales geophysicae → ACNP
ISSN journal
09927689
Volume
12
Issue
5
Year of publication
1994
Pages
478 - 480
Database
ISI
SICI code
0992-7689(1994)12:5<478:TEOADA>2.0.ZU;2-#
Abstract
Simultaneous observations by EISCAT and the Kilpisjarvi all-sky camera revealed the presence of a band of enhanced electric field on one sid e only of an auroral arc. Both the arc and the enhanced electric field drifted equatorward at a velocity close to the prevailing convection velocity. The same drift speed was indicated by EISCAT measurements of ion-frictional heating: this descended in height as the magnetic fiel d lines carrying the enhanced electric field cut across the EISCAT bea m.