Storm-time electric field distribution in the inner magnetosphere

Yukitoshi Nishimura, A. Shinbori, T. Ono, M. Iizima, A. Kumamoto

Research output: Contribution to journalArticle

15 Citations (Scopus)

Abstract

The distribution of the storm-time electric field in the inner magnetosphere has been investigated by using the Akebono/EFD data within a period from 1989 to 1995. During the main phase of geomagnetic storms, the strong electric field appears between L = 2 and L = 6 in both dawn and dusk sectors with the magnitude from 2 to 4 mV/m, and the maximum value appears at L = 3 in the dusk sector. During the recovery and weakly disturbed period, the region with intense electric field moves outward with decreasing the amplitude. This structure of the localized electric field is quite different from the Volland-Stern electric field model, suggesting the existence of another electric field source other than the large-scale convection electric field. During quiet periods, although the electric field fairly follows the corotation electric field, the distribution at L = 3.5 indicates a small deviation from pure corotation.

Original languageEnglish
Article numberL22102
JournalGeophysical Research Letters
Volume33
Issue number22
DOIs
Publication statusPublished - 2006 Nov 28

ASJC Scopus subject areas

  • Geophysics
  • Earth and Planetary Sciences(all)

Fingerprint Dive into the research topics of 'Storm-time electric field distribution in the inner magnetosphere'. Together they form a unique fingerprint.

  • Cite this