Field-Aligned Currents During Northward IMF

  1. Thomas A. Potemra
  1. Takeshi Iijima

Published Online: 21 MAR 2013

DOI: 10.1029/GM028p0115

Magnetospheric Currents

Magnetospheric Currents

How to Cite

Iijima, T. (1984) Field-Aligned Currents During Northward IMF, in Magnetospheric Currents (ed T. A. Potemra), American Geophysical Union, Washington, D. C.. doi: 10.1029/GM028p0115

Author Information

  1. Faculty of Science, the University of Tokyo, Tokyo 113, Japan

Publication History

  1. Published Online: 21 MAR 2013
  2. Published Print: 1 JAN 1984

ISBN Information

Print ISBN: 9780875900551

Online ISBN: 9781118664131



  • Magnetospheric currents—Congresses;
  • Plasma instabilities—Congresses


Studies of field-aligned currents have advanced a great deal during the International Magnetospheric Study (IMS) period. However, there still remain many areas that need further examination. One of them is examined here and involves a case study of field-aligned currents and ionospheric currents during a period of strong northward interplanetary magnetic field (IMF). The present results provide the first evidence for reversed two-cell convectiontype horizontal current at high latitudes in the ionosphere which is associated with large-scale field-aligned currents. These field-aligned currents are located poleward of region 1 currents and have the opposite flow directions of region 1 currents.