Ground-based observations of subauroral energetic-electron arcs

Journal Article · Fri Jul 01 04:00:00 EDT 1983 · Geophys. Res. Lett.; (United States)

DOI:https://doi.org/10.1029/GL010i007p00557· OSTI ID:5651073

Vondrak, R; Harris, S; Mende, S

On March 1, 1981 the spatial distributions of ionization and luminosity were monitored at Chatanika, Alaska with the incoherent-scatter radar, an all-sky television system, and meridian scanning photometers. The radar detected discrete regions of enhanced E--region ionization at subauroral latitudes, more than 3/sup 0/ equatorward of the diffuse aurora. The high-resolution all-sky television measurements at 427.8 nm showed that the luminosity pattern resembles multiple auroral arcs; they are narrow in latitudinal width and they extend from horizon-to-horizon in an east-west direction. These observations indicate the existence of a subauroral source of electron precipitation that is both narrow in latitude and extended in longitude.

• Research Organization: Space Sciences Laboratory, Lockheed Palo Alto Research Laboratory, Palo Alto, CA 94304
• OSTI ID: 5651073
• Journal Information: Geophys. Res. Lett.; (United States), Journal Name: Geophys. Res. Lett.; (United States) Vol. 10:7; ISSN GPRLA
• Country of Publication: United States
• Language: English

Related Subjects

640201* -- Atmospheric Physics-- Auroral
Ionospheric
& Magetospheric Phenomena
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
AURORAE
CHARGED-PARTICLE PRECIPITATION
E REGION
EARTH ATMOSPHERE
ELECTRON PRECIPITATION
GEOGRAPHICAL VARIATIONS
IONIZATION
IONOSPHERE
LATITUDE EFFECT
LUMINOSITY
MEASURING INSTRUMENTS
OPTICAL PROPERTIES
PHYSICAL PROPERTIES
PLANETARY IONOSPHERES
RADAR
RANGE FINDERS
VARIATIONS