Accession Number:

ADA125973

Title:

Final Report,

Descriptive Note:

Corporate Author:

CALIFORNIA UNIV LOS ANGELES

Personal Author(s):

Report Date:

1983-03-03

Pagination or Media Count:

15.0

Abstract:

The general areas of research studied under this grant have dealt with the mechanisms for the generations of wave noise in connection with auroral precipitation. The largest effort has been devoted to understanding the generation of wave noise called VLF hiss. VLF hiss is radio noise in the whistler mode associated with auroral arcs. We have tried to understand the generation of this noise by the auroral electron beam and the subsequent interaction of this noise back on the auroral electrons. The major research accomplishment achieved under this grant is the development of a complete and detailed theoretical model that successfully predicts the power flux spectra of whistler noise generated by a given auroral electron beam. In addition, wave noise in other modes such as electromagnetic AKR are also generated by the auroral electron beam. These phenomena have also been investigated in the context of the theoretical model developed to study VLF hiss. Furthermore, the study of wave phenomena connected with the aurora has not been restricted solely to the ionosphere. The generation of low frequency turbulence in the magnetotail has also been examined. In the following, the details of the research conducted in each of these areas is given along with results and conclusions. Author

Subject Categories:

  • Atmospheric Physics
  • Plasma Physics and Magnetohydrodynamics
  • Radiofrequency Wave Propagation

Distribution Statement:

APPROVED FOR PUBLIC RELEASE