Abstract Depleted narrow (localized in longitude) regions (field tubes) in the plasmasphere, recently discovered in $ He^{+} $ radiation measurements on the IMAGE spacecraft, were first directly observed by the Magion-5 satellite. The low-density regions (notches) occupy <∼ 10–30° in longitude and extend from L ∼ 2–3 to the plasmasphere boundary in neighboring plasmasphere regions with larger densities. The Magion-5 data give evidence that in the low-density regions temperature is enhanced as compared to the neighboring denser plasmasphere regions. Formation of notches in the plasmasphere is, apparently, associated with AE intensification during weak magnetic storms, while strong magnetic storms usually result in the overall reduction of plasmasphere dimensions. However, even a strong magnetic storm on April 6–7, 2000 (max Kp = 9-and min Dst ∼ −290 nT), but accompanied by an isolated AE impulse, resulted in a density decrease only in the longitudinally limited post-midnight sector of the plasmasphere.
Study of notches in the Earth’s plasmasphere based on data of the MAGION-5 satellite
Cosmic Research ; 46 , 1
2008
Aufsatz (Zeitschrift)
Englisch
BKL: | 55.60 Raumfahrttechnik / 39.00 Astronomie: Allgemeines / 50.93 Weltraumforschung | |
Lokalklassifikation TIB: | 770/3520/8000 |
Study of notches in the Earth’s plasmasphere based on data of the MAGION-5 satellite
Springer Verlag | 2008
|Study of notches in the Earth’s plasmasphere based on data of the MAGION-5 satellite
Springer Verlag | 2008
|Design and construction of the Magion satellite
Tema Archiv | 1980
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