Other
Scientific paper
Dec 1999
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999jbaa..109..308s&link_type=abstract
Journal of the British Astronomical Association, vol.109, no.6, p.308-319
Other
Scientific paper
Two types of aurora are frequently observed from Scotland, the one discrete and the other diffuse. The discrete aurora is a highly active event popularly known as the Merry Dancers. It is a short-lived, rayed arc with a sharp lower border and is usually associated with intense magnetic activity. These features indicate that it is generated by boundary plasma sheet electrons. It is a discrete arc that has migrated south with the discrete auroral oval in response to increased magnetic activity. In contrast, the diffuse aurora is a quiet event popularly known as the Northern Dawn. It is a long-lived, homogeneous arc with a diffuse lower border and is usually associated with weak magnetic activity. These features indicate that it is generated by central plasma sheet electrons. It is an arc of diffuse-continuous aurora that has migrated south with the diffuse oval in response to north/south changes in the interplanetary magnetic field. Thus the Merry Dancers stem from the discrete auroral oval and the Northern Dawn from the diffuse auroral oval.
No associations
LandOfFree
Discrete and diffuse aurora observed from Scotland: the Merry Dancers and the Northern Dawn does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Discrete and diffuse aurora observed from Scotland: the Merry Dancers and the Northern Dawn, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Discrete and diffuse aurora observed from Scotland: the Merry Dancers and the Northern Dawn will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1580185