Two-component auroral electrojet

Journal Article · Fri Oct 01 04:00:00 EDT 1982 · Geophys. Res. Lett.; (United States)

DOI:https://doi.org/10.1029/GL009i010p01175· OSTI ID:6832774

Kamide, Y

By using the AL index for one year as well as some of the IMS meridian chain records, the longitudinal center of the substorm westward electrojet is examined. Although on the average AL is most often dominated by stations located near 0300 MLT, the westward electrojet during the expansion and maximum phase of substorms tends to be centered in the premidnight to early morning sector, and, during the recovery phase, it is most intense in morning hours. It is suggested that the substorm-associated westward electrojet consists of two components which have different characteristic times; one produced mainly by Hall condutivity enhancements which dominate in the midnight sector and the other one by southward electric fields in the morning sector.

• Research Organization: NOAA Space Environment Laboratory, Boulder, Colorado 80303
• OSTI ID: 6832774
• Journal Information: Geophys. Res. Lett.; (United States), Journal Name: Geophys. Res. Lett.; (United States) Vol. 9:10; 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
AURORAL ZONES
CURRENTS
DAILY VARIATIONS
ELECTRIC CURRENTS
ELECTRIC FIELDS
ELECTROJETS
GEOGRAPHICAL VARIATIONS
GEOMAGNETIC FIELD
MAGNETIC BAYS
MAGNETIC FIELDS
VARIATIONS