 |
| Titel |
Evaluation of a space-observed electric field structure for the ability to destabilize inhomogeneous energy-density-driven waves |
| VerfasserIn |
I. V. Golovchanskaya, B. V. Kozelov, I. V. Mingalev, M. N. Melnik, A. A. Lubchich |
| Medientyp |
Artikel
|
| Sprache |
Englisch
|
| ISSN |
0992-7689
|
| Digitales Dokument |
URL |
| Erschienen |
In: Annales Geophysicae ; 32, no. 1 ; Nr. 32, no. 1 (2014-01-10), S.1-6 |
| Datensatznummer |
250121015
|
| Publikation (Nr.) |
 copernicus.org/angeo-32-1-2014.pdf |
|
|
|
|
|
| Zusammenfassung |
| We examine the effectiveness of nonuniform, quasistatic, transverse electric
fields that are often observed in the auroral region in destabilization of
inhomogeneous energy-density-driven (IEDD) waves. Specifically, the IEDD
dispersion relation of Ganguli et al. (1985a, b) is evaluated for an electric field structure observed by the FAST
satellite in the auroral ionosphere at 1000 km altitude. The background
field-aligned current, plasma density and ion composition are derived from
FAST observations. Other input parameters adopted in the calculations are
varied in pertinent ranges. Unstable solutions are obtained that
indicate a variety of frequencies and perpendicular wavelengths. These can
manifest as a broadband spectrum of IEDD waves. |
| |
|
| Teil von |
|
|
|
|
|
|
|
|