期刊
GEOPHYSICAL RESEARCH LETTERS
卷 42, 期 21, 页码 9176-9184出版社
AMER GEOPHYSICAL UNION
DOI: 10.1002/2015GL064747
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资金
- STFC [ST/K001051/1]
- NASA [NAS5-01072]
- International Space Science Institute's International Teams program
- STFC [ST/K001051/1] Funding Source: UKRI
- Science and Technology Facilities Council [ST/K001051/1] Funding Source: researchfish
We use Van Allen Probes data to investigate the responses of tens of keV to 2 MeV electrons throughout a broad range of the radiation belts (2.5 <= L <= 6.0) during 52 geomagnetic storms from the most recent solar maximum. Electron storm time responses are highly dependent on both electron energy and L shell. Tens of keV electrons typically have peak fluxes in the inner belt or near-Earth plasma sheet and fill the inner magnetosphere during storm main phases. Approximately 100 to similar to 600 keV electrons are enhanced in up to 87% of cases around L similar to 3.7, and their peak flux location moves to lower L shells during storm recovery phases. Relativistic electrons (>=similar to 1 MeV) are nearly equally likely to produce enhancement, depletion, and no-change events in the outer belt. We also show that the L shell of peak flux correlates to storm magnitude only for hundreds of keV electrons.
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