On the radiation belt location during the 23rd and 24th solar cycles

Alexei V. Dmitriev

研究成果: 雜誌貢獻期刊論文同行評審

4 引文 斯高帕斯(Scopus)


Within the last two solar cycles (from 2001 to 2018), the location of the outer radiation belt (ORB) was determined using NOAA/Polar-orbiting Operational Environmental Satellite (POES) observations of energetic electrons with energies above 30 keV. It was found that the ORB was shifted a little (∼ 1°) in the European and North American sectors, while in the Siberian sector the ORB was displaced equatorward by more than 3°. The displacements corresponded qualitatively to the change in the geomagnetic field predicted by the IGRF-12 model. However, in the Siberian sector, the model has a tendency to underestimate the equatorward shift of the ORB. The shift became prominent after 2012, which might have been related to a geomagnetic "jerk" that occurred in 2012-2013. The displacement of the ORB to lower latitudes in the Siberian sector can contribute to an increase in the occurrence rate of midlatitude auroras observed in the Eastern Hemisphere.

頁(從 - 到)719-732
期刊Annales Geophysicae
出版狀態已出版 - 13 8月 2019


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