Spatial Development of the Dipolarization Region in the Inner Magnetosphere Journal of Geophysical Research: Space Physics
收藏NOAA Institutional Repository2023-09-13 更新2026-04-25 收录
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https://doi.org/10.1029/2018ja025443
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资源简介：
The present study examines dipolarization events observed by the Van Allen Probes within 5.8REfrom Earth. It is found that the probability of occurrence is signi ficantly higher in the dusk-to- midnight sector than in the midnight-to-dawn sector, and it deceases sharply earthward. A comparison withobservations made at nearby satellites shows that dipolarization signatures are often highly correlated (c.c. >0.8) within 1 hr in magnetic local time (MLT) and 1 R EinRXY, and the dipolarization region expands earthward and westward in the dusk-to-midnight sector. The westward expansion velocity is estimated at0.4 hr (in MLT) per minute, or 60 km/s, which is consistent with the previously reported result for geosynchronous dipolarization. The earthward expansion is apparently less systematic than the westward
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NOAA
创建时间：
2023-09-13
