Abstract
SSC events at the geosynchronous altitude have been studied using data obtained from the geosynchronous satellites SMS/GOES, as well as data obtained on the ground for the period from 1976 to 1980. Two characteristic local time dependencies are found for the SSC associated phenomena at the geosynchronous altitude. In the compressional component (parallel to the ambient magnetic field direction), the SSC associated signature is very large in the noon-side, while it becomes smaller with increasing distance from the noon-side and is very small or zero in the midnight-side. In the transverse component (east-west direction), the direction of the initial movement of Psc changes drastically across the noon and the midnight. The direction is eastward in the morning-side, while it is westward in the evening-side. These observational results will be examined quantitatively in the present study.
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