Polar auroral arc studies particularly using Akebono satellite and Qaanaaq (Greenland) all-sky imager data

Takahiro Obara, Katsura Fukui

Research output: Contribution to journalReview articlepeer-review

6 Citations (Scopus)

Abstract

Auroral arcs observed at very high latitudes have traditionally been called 'high latitude arcs' or 'polar cap arcs' or 'polar arcs' and have received much attention during the last two decades. In this article we initially examine the terminologies given for high latitude polar arc phenomena to have a reasonable view. We next review the observational signatures of 'polar arcs' paying particular attention to their more dynamical meso-scale features. Then, we will demonstrate recent progress, based on Akebono (EXOS-D) observations together with simultaneous all-sky imager observations, on issues which have remain unanswered. We lastly emphasize the importance of polar arc phenomena in understanding basic magnetospheric processes during northward IMF conditions, and discuss future work.

Original languageEnglish
Pages (from-to)1361-1372
Number of pages12
JournalJournal of Atmospheric and Solar-Terrestrial Physics
Volume59
Issue number12
DOIs
Publication statusPublished - 1997 Aug
Externally publishedYes

ASJC Scopus subject areas

  • Geophysics
  • Atmospheric Science
  • Space and Planetary Science

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