Skip to main content
SpringerLink
Log in

Auroral-arc splitting by intrusion of a new convection channel

  • Original articles
  • Published:
Annales Geophysicae

Abstract

During a run of the Common Programme Three of the EISCAT radar the splitting of an auroral arc was observed by high time-resolution, ground-based cameras when the UHF radar beam was close to the arc. The evening eastward electrojet situation with a large-scale northward ionospheric electric field was disturbed by the intrusion of a convection channel with southward electric field from the east. The interaction of the new convection channel with the auroral arc caused changes in arc brightness and arc splitting, i.e. the creation of a new arc parallel to the preexisting auroral arc. The event is described as one possibility for the creation of parallel arcs during slightly disturbed magnetic conditions far from the Harang discontinuity.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Similar content being viewed by others

Author information

Authors and Affiliations

  1. Max-Planck-Institut für extraterrestrische Physik, Giessenbachstr., D-85740, Garching, Germany

    H. U. Frey & G. Haerendel

  2. Institut für Geophysik und Meteorologie, TU Braunschweig, Mendelssohnstr. 3, D-38106, Braunschweig, Germany

    S. Buchert

  3. Department of Physics, University of Southampton, Southampton, SO, 17 1BJ, UK

    B. S. Lanchester

Authors
  1. H. U. Frey
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. G. Haerendel
    View author publications

    You can also search for this author in PubMed Google Scholar

  3. S. Buchert
    View author publications

    You can also search for this author in PubMed Google Scholar

  4. B. S. Lanchester
    View author publications

    You can also search for this author in PubMed Google Scholar

About this article

Cite this article

Frey, H.U., Haerendel, G., Buchert, S. et al. Auroral-arc splitting by intrusion of a new convection channel. Annales Geophysicae 14, 1257–1264 (1997). https://doi.org/10.1007/s00585-996-1257-2

Download citation

  • Received:

  • Revised:

  • Accepted:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s00585-996-1257-2

Keywords

Search

Navigation