Accession Number:

AD0691745

Title:

AURORAL MICROPULSATION INSTABILITY,

Descriptive Note:

Corporate Author:

CALIFORNIA UNIV LOS ANGELES PLASMA PHYSICS GROUP

Personal Author(s):

Report Date:

1969-05-01

Pagination or Media Count:

50.0

Abstract:

The paper describes a drift instability of Alfven waves driven by the sharp electron thermal gradient at the inner edge of the electron plasma sheet. The analysis predicts a localized instability with wavelengths perpendicular to the magnetic field comparable with an ion cyclotron radius and parallel wavelengths comparable with the length of field lines. The fastest growing wave should have an approximate 10 second period, consistent with observations of Pi 1 micropulsations observed during substorms. Author

Subject Categories:

  • Atmospheric Physics
  • Geomagnetism

Distribution Statement:

APPROVED FOR PUBLIC RELEASE