DOI: 10.1002/2015GL066376
论文题名: Acceleration and loss of relativistic electrons during small geomagnetic storms
作者: Anderson B.R. ; Millan R.M. ; Reeves G.D. ; Friedel R.H.W.
刊名: Geophysical Research Letters
ISSN: 0094-8350
EISSN: 1944-8081
出版年: 2015
卷: 42, 期: 23 起始页码: 10113
结束页码: 10119
语种: 英语
英文关键词: geomagnetic storms
; geosynchronous relativistic electron flux
; radiation belt dynamics
; solar wind
Scopus关键词: Electrons
; Geomagnetism
; Radiation belts
; Radiation effects
; Solar energy
; Solar wind
; Flux enhancement
; Geomagnetic storm
; Geosynchronous orbits
; Loss mechanisms
; Radiation belt dynamics
; Relativistic electron
; Solar cycle
; Time-periods
; Storms
英文摘要: Past studies of radiation belt relativistic electrons have favored active storm time periods, while the effects of small geomagnetic storms (Dst > -50 nT) have not been statistically characterized. In this timely study, given the current weak solar cycle, we identify 342 small storms from 1989 through 2000 and quantify the corresponding change in relativistic electron flux at geosynchronous orbit. Surprisingly, small storms can be equally as effective as large storms at enhancing and depleting fluxes. Slight differences exist, as small storms are 10% less likely to result in flux enhancement and 10% more likely to result in flux depletion than large storms. Nevertheless, it is clear that neither acceleration nor loss mechanisms scale with storm drivers as would be expected. Small geomagnetic storms play a significant role in radiation belt relativistic electron dynamics and provide opportunities to gain new insights into the complex balance of acceleration and loss processes. © 2015. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84953374041&doi=10.1002%2f2015GL066376&partnerID=40&md5=0ac77633d8d462fd12f13063d77d2db2
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/7966
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: Department of Physics and Astronomy, Dartmouth College, Hanover, NH, United States
Recommended Citation:
Anderson B.R.,Millan R.M.,Reeves G.D.,et al. Acceleration and loss of relativistic electrons during small geomagnetic storms[J]. Geophysical Research Letters,2015-01-01,42(23).