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首页> 外文期刊>Journal of geophysical research >The Effects of Geomagnetic Activities on Acceleration Regions of Radiation Belt Electrons
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The Effects of Geomagnetic Activities on Acceleration Regions of Radiation Belt Electrons

机译：The Effects of Geomagnetic Activities on Acceleration Regions of Radiation Belt Electrons

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Solar wind and magnetospheric processes play important roles in relativistic electron acceleration in the Earth's outer radiation belt. However, how geomagnetic activity affects the acceleration region of relativistic electrons is still not clear. Here we first report the local acceleration regions during the strong storm of 1 June 2013. The first local acceleration region occurs at the lower L shell (L* similar to 4.0) during the early recovery phase, which is associated with non-continuous substorm activities. The second local acceleration region occurs at the higher L shell (L* similar to 5.0) during the late recovery phase, which is associated with continuous substorm activities. To provide a more comprehensive picture, we additionally analyze two storm events with different geomagnetic activities. These events suggest that (a) the strong storm makes it possible for the local acceleration regions to occur at different L shells; (b) the timing, intensity, and duration of substorms during the recovery phase are crucial to the location and dynamics of the local acceleration region. These results can help us further understand the dynamics of relativistic electrons in the Earth's outer radiation belt.

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