Автор |
Gelpi, C. G. |
Автор |
Bering, E. A. |
Дата выпуска |
1984 |
dc.description |
On March 9, 1978, a sounding rocket launched from Poker Flat, Alaska, at 2200 LT, made a four‐component measurement of a 0.5 Hz hydromagnetic wave as the payload crossed the poleward boundary of a quiet homogeneous auroral arc. An energy flux of ∼10<sup>−6</sup> W/m² was observed propagating upward with a left‐handed polarization within the arc, and a flux 6 times greater was observed propagating downward with a right‐handed polarization on the arc boundary. The waves were identified as shear mode Alfvén waves. Various models for the source of the free energy are discussed with the conclusion that the most likely production mechanism was either the electromagnetic or electrostatic Kelvin‐Helmholtz instability. |
Формат |
application.pdf |
Копирайт |
Copyright 1984 by the American Geophysical Union. |
Тема |
IONOSPHERE |
Тема |
Particles and Fields—Ionosphere: Auroral zone magnetic effects |
Тема |
Particles and Fields—Ionosphere: Auroras |
Тема |
Particles and Fields—Ionosphere: Electric fields |
Тема |
Particles and Fields—Ionosphere: Wave propagation |
Название |
The plasma wave environment of an auroral arc: 2. Ulf waves on an auroral arc boundary |
Тип |
article |
DOI |
10.1029/JA089iA12p10847 |
Electronic ISSN |
2156-2202 |
Print ISSN |
0148-0227 |
Журнал |
Journal of Geophysical Research: Space Physics |
Том |
89 |
Первая страница |
10847 |
Последняя страница |
10864 |
Выпуск |
A12 |
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