Ring current ions and radiation belt electrons during geomagnetic storms driven by coronal mass ejections and corotating interaction regions
Ring current ions and radiation belt electrons during geomagnetic storms driven by coronal mass ejections and corotating interaction regions
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DOI：
10.1029/2005gl024590
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发表时间：
2005-11
影响因子：
5.2
通讯作者：
Y. Miyoshi;R. Kataoka
中科院分区：
文献类型：
--
作者：
Y. Miyoshi;R. Kataoka
对与共转相互作用区（CIR）相关的Dst −130 nT磁暴、由日冕物质抛射（CME）驱动的Dst > −130 nT磁暴和由CME驱动的Dst 3.5的大磁暴进行了环电流（RC）离子和辐射带（RB）电子叠加历元分析，其恢复阶段主要取决于太阳风结构; CIR比CME更有效地促进了外带的演化，因为CIR之后的快速冕洞流中存在一系列由Alfvén波驱动的粒子注入。另一方面，在L ≤ 3.0时，RB电子和RC离子通量的增加在很大程度上取决于风暴的强度;只有具有巨大运动电场和大动压的特定CME才能有效地增加L ≤ 3.0时的RB电子和RC离子。
Superposed epoch analyses of ring current (RC) ions and radiation belt (RB) electrons are conducted for geomagnetic storms with Dst −130 nT associated with corotating interaction regions (CIRs), storms with Dst > −130 nT driven by coronal mass ejections (CMEs), and CME‐driven great storms with Dst 3.5 during the recovery phase largely depend on the solar wind structures; CIRs are significantly more effective for the evolution of the outer belt than are CMEs because of the existence of a series of particle injections driven by Alfvén waves within the fast coronal hole stream following the CIR. On the other hand, the flux enhancements of RB electrons and RC ions at L ≤ 3.0 largely depend on the strength of storms; only particular CMEs with a huge motional electric field and large dynamic pressure are effective in increasing the RB electrons and RC ions at L ≤ 3.0.