Studies of the magnetospheric substorm: 3. Concept of the magnetospheric substorm and its relation to electron precipitation and micropulsations

The concept of the auroral substorm is reviewed in terms of recent satellite measurements of the magnetospheric effects of a substorm, and a more general and inclusive terminology, the magnetospheric substorm, is suggested. In support of this suggestion, it is shown that the various forms of geomagnetic micropulsations and energetic electron precipitation that have been discussed in papers 1 and 2 occur at their respective local times during a substorm. Balloon X-ray and micropulsation data obtained by the Berkeley group, as well as riometer absorption, earth currents, and standard magnetograms from several auroral-zone stations, have been used.

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