NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
Electron density distributions in the high-latitude magnetosphereElectron density profiles were constructed to study the plasma density depletions in the nightside auroral zone and the density variations with increasing altitude in the polar cap, using electric field spectrum measurements from the plasma wave instrument on DE-1. Sharply defined regions of depleted plasma densities were commonly observed on nightside auroral field lines, in which electron densities were strongly depleted in relation to the adjacent plasmaspheric and polar densities, forming a low-density cavity at about 70 deg invariant latitude. A correlation was found between low auroral plasma densities, upflowing ion distributions, and an energetic precipitating electron population, indicating that electron density depletions in the nightside auroral zone are directly associated with auroral acceleration processes.
Document ID
19890046465
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Persoon, Ann M.
(Iowa, University Iowa City, United States)
Date Acquired
August 14, 2013
Publication Date
January 1, 1988
Publication Information
Publication: Advances in Space Research
Volume: 8
Issue: 8 19
ISSN: 0273-1177
Subject Category
Geophysics
Accession Number
89A33836
Funding Number(s)
CONTRACT_GRANT: N00014-85-K-0404
CONTRACT_GRANT: NGL-16-001-043
CONTRACT_GRANT: NAS5-28710
CONTRACT_GRANT: NAG5-310
CONTRACT_GRANT: NGL-16-001-002
CONTRACT_GRANT: NAS5-28711
Distribution Limits
Public
Copyright
Other

Available Downloads

There are no available downloads for this record.
No Preview Available