globalchange  > 科学计划与规划
DOI: 10.1002/2015GL065192
论文题名:
Revisit of relationship between geosynchronous relativistic electron enhancements and magnetic storms
作者: Kim H.-J.; Lyons L.; Pinto V.; Wang C.-P.; Kim K.-C.
刊名: Geophysical Research Letters
ISSN: 0094-8624
EISSN: 1944-8355
出版年: 2015
卷: 42, 期:15
起始页码: 6155
结束页码: 6161
语种: 英语
英文关键词: geosynchronous relativistic electron enhancements ; magnetic storms ; relativistic electrons ; solar wind
Scopus关键词: Digital storage ; Geomagnetism ; Ionosphere ; Magnetism ; Solar wind ; Geosynchronous orbits ; Interplanetary magnetic fields ; Magnetic storms ; Relativistic electron ; Relativistic electron enhancement ; Solar wind density ; Substorm activity ; Wind conditions ; Electrons ; electron ; geomagnetic storm ; ionosphere ; magnetic field ; solar wind
英文摘要: We find evidence that magnetic storms are not only unnecessary for geosynchronous relativistic electron enhancements but also not directly relevant to the electron enhancements even if the enhancements are accompanied by magnetic storms. What is crucial for electron enhancements at geosynchronous orbit are sustained south-oriented or north-south fluctuating interplanetary magnetic field (IMF) Bz that drives sufficiently large substorm activity and small solar wind density Nsw that likely leads to low loss rate of relativistic electrons to the ionosphere and/or to the magnetopause for an extended time period. Specifically, almost all the abrupt, large electron increases in our data set took place under the condition of average AE > 235 nT and average Nsw ≤ 5 cm-3. Examination of detailed time profiles clearly shows that electron flux starts to increase quite immediately with arrival of the right IMF and solar wind conditions, regardless of a magnetic storm, leaving the accompanied magnetic storms merely coincident. ©2015. American Geophysical Union. All Rights Reserved.
URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84940450764&doi=10.1002%2f2015GL065192&partnerID=40&md5=1efb4480f71c2f154f2afc478995eb1c
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/8240
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 Atmospheric and Oceanic Sciences, University of California, Los Angeles, CA, United States

Recommended Citation:
Kim H.-J.,Lyons L.,Pinto V.,et al. Revisit of relationship between geosynchronous relativistic electron enhancements and magnetic storms[J]. Geophysical Research Letters,2015-01-01,42(15).
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