DOI: 10.1002/2015GL064747
论文题名: The effects of geomagnetic storms on electrons in Earth's radiation belts
作者: Turner D.L. ; O'Brien T.P. ; Fennell J.F. ; Claudepierre S.G. ; Blake J.B. ; Kilpua E.K.J. ; Hietala H.
刊名: Geophysical Research Letters
ISSN: 0094-8513
EISSN: 1944-8244
出版年: 2015
卷: 42, 期: 21 起始页码: 9176
结束页码: 9184
语种: 英语
英文关键词: electrons
; geomagnetic storms
; radiation belts
Scopus关键词: Electron energy levels
; Geomagnetism
; Magnetosphere
; Plasma sheaths
; Radiation belts
; Radiation effects
; Storms
; 2-MeV electron
; Earth's radiation belts
; Electron energies
; Geomagnetic storm
; Inner magnetosphere
; Near-Earth plasmas
; Relativistic electron
; Solar maxima
; Electrons
; Earth
; electron density
; flux measurement
; geomagnetic storm
; magnetosphere
; plasma
; radiative transfer
; solar activity
英文摘要: 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 ~600 keV electrons are enhanced in up to 87% of cases around L~3.7, and their peak flux location moves to lower L shells during storm recovery phases. Relativistic electrons (≥~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. © 2015. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84955188083&doi=10.1002%2f2015GL064747&partnerID=40&md5=2928fd4898ff931a35ab6c8c41415f97
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/8129
Appears in Collections: 科学计划与规划 气候变化与战略
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作者单位: Space Sciences Department, Aerospace Corporation, El Segundo, CA, United States
Recommended Citation:
Turner D.L.,O'Brien T.P.,Fennell J.F.,et al. The effects of geomagnetic storms on electrons in Earth's radiation belts[J]. Geophysical Research Letters,2015-01-01,42(21).