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Sun & Akasofu 2002

Sun, W. and Akasofu, S.-I. (2002). A new field-aligned current index AF and its relation to the storm-time ring current and energetic neutral atom (ENA) emissions. Geophysical Research Letters 29: doi: 10.1029/2002GL014762. issn: 0094-8276.

It is shown that a newly devised field-aligned current index AF is well correlated with the Dst index, the correlation coefficient being 0.93. The AF index is based on the fact that geomagnetic Y (or D) component variations in the middle and low latitudes are mainly caused by field-aligned currents. It is also demonstrated that energetic neutral atom (ENA) emissions measured by the Geotail satellite are well correlated with the AF index.

BACKGROUND DATA FILES

	Abstract

Keywords
Magnetospheric Physics, Ring current, Magnetospheric Physics, Energetic particles, precipitating, Magnetospheric Physics, Current systems, Magnetospheric Physics, Storms and substorms, Magnetospheric Physics, Magnetosphere/ionosphere interactions

Journal
Geophysical Research Letters
http://www.agu.org/journals/gl/

Publisher
American Geophysical Union
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