Tv Observations of Auroral Arcs
- S.-I. Akasofu and
- J.R. Kan
Published Online: 26 MAR 2013
Copyright 1981 by the American Geophysical Union.
Physics of Auroral Arc Formation
How to Cite
Oguti, T. (1981) Tv Observations of Auroral Arcs, in Physics of Auroral Arc Formation (eds S.-I. Akasofu and J.R. Kan), American Geophysical Union, Washington, D. C.. doi: 10.1029/GM025p0031
- Published Online: 26 MAR 2013
- Published Print: 1 JAN 1981
Print ISBN: 9780875900506
Online ISBN: 9781118664360
- Auroras—Addresses, essays, lectures
From the dynamical view point of aurora, it is shown that the discrete aurora so far called, especially in the dusk to the midnight sectors, is a clockwise (viewed along the magnetic field) vortex chain or a shear, including splitting, and that the diffuse aurora, though called so higherto, actually consists of pulsating structures with a diffuse background, especially in the dawn sectors. It is also shown that the transient auroral forms, such as swirling smoke like auroras and highly striated auroras that show both rotational motions and pulsations are often seen on equatorward expanding branches of aurora during an auroral expansion in the midnight sector.