Computer Science
Scientific paper
Jan 1974
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1974p%26ss...22..111g&link_type=abstract
Planetary and Space Science, Volume 22, Issue 1, p. 111-119.
Computer Science
5
Scientific paper
When hourly averages of interplanetary magnetic-field parameters are compared to the AE index, it is found that, although the time-integral of the southward component is important in determining whether there will be a substorm, the magnitude of storm activity as measured by AE is related to the level of the variance of the field. For a given value of the time-integral of the southward component of the interplanetary magnetic field, the AE index increases as the variance increases. For periods immediately following storm sudden commencements, this simple relationship apparently breaks down indicating that a different triggering process or storm-generation mechanism may be at work. These observations imply that although it is impossible to differentiate between substorms at the Earth's surface, it may be possible to differentiate between the conditions in the solar wind that lead to a certain magnitude of magnetic activity.
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