The Motion of the WTS as a Function of Electron Temperature Anisotropy in the Plasma Sheet

  1. T. E. Moore,
  2. J. H. Waite Jr.,
  3. T. W. Moorehead and
  4. W. B. Hanson
  1. P. L. Rothwell1,
  2. M. B. Silevitch2 and
  3. L. P. Block3

Published Online: 18 MAR 2013

DOI: 10.1029/GM044p0297

Modeling Magnetospheric Plasma

Modeling Magnetospheric Plasma

How to Cite

Rothwell, P. L., Silevitch, M. B. and Block, L. P. (1988) The Motion of the WTS as a Function of Electron Temperature Anisotropy in the Plasma Sheet, in Modeling Magnetospheric Plasma (eds T. E. Moore, J. H. Waite, T. W. Moorehead and W. B. Hanson), American Geophysical Union, Washington, D. C.. doi: 10.1029/GM044p0297

Author Information

  1. 1

    Air Force Geophysics Laboratory, Hanscom AFB, Bedford, Massachusetts 01731

  2. 2

    Center for Electromagnetic Research, Northeastern University, Boston, Massachusetts 02115

  3. 3

    Department of Physics, Royal Institute of Technology, Stockholm, Sweden S 100 44

Publication History

  1. Published Online: 18 MAR 2013
  2. Published Print: 1 JAN 1988

ISBN Information

Print ISBN: 9780875900704

Online ISBN: 9781118664414



  • Space plasmas—Mathematical models;
  • Magnetosphere—Mathematical models;
  • Ionosphere—Mathematical models


Our previous studies on the motion of the westward traveling surge and the simultaneous generation of Pi 2 pulsations during substorms. Now it is found that the requirement that the Pi 2 pulsations be damped leads to a relationship between the direction of surge motion and the electron temperature anisotropy in the plasma sheet. For example, embryonic surge structures that are quite narrow (≤50–100 km) in the north-south dimension require substantial electron heating parallel to the magnetic field in order for poleward surge motion to take place. Otherwise, these structures will move westward.