Study of individual geomagnetic storms in terms of the solar wind

Details Study of individual geomagnetic storms in terms of the solar wind Study of individual geomagnetic storms in terms of the solar wind

Sep 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980p%26ss...28..933a&link_type=abstract

Planetary and Space Science, vol. 28, Sept. 1980, p. 933-944.

Physics

6

Dynamo Theory, Geomagnetism, Magnetic Storms, Solar Terrestrial Interactions, Solar Wind, Auroral Electrojets, Earth Magnetosphere, Interplanetary Magnetic Fields

Scientific paper

The development of weak, medium, and major geomagnetic storms was investigated by examining the power generated by a solar wind-magnetosphere dynamo and geomagnetic indices AE and /Dst/. The growth of the main phase increase is primarily determined by the peak value of the solar wind-magnetosphere energy coupling function (epsilon); the time variations of the AE index are very similar to those of the epsilon function. However, the AE index does not grow proportionately with epsilon; above the value of 10 to the 20th erg/s, the growth of the AE index levels off. It was concluded that intense substorm activity during a geomagnetic storm cannot be interpreted as a successive conversion of energy accumulated during a very early epoch of the storm.

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