DOI: 10.1029/2018JA025419
Scopus记录号: 2-s2.0-85052451094
论文题名: Statistical Investigation of the Efficiency of EMIC Waves in Precipitating Relativistic Electrons
作者: Qin M. ; Hudson M. ; Millan R. ; Woodger L. ; Shekhar S.
刊名: Journal of Geophysical Research: Space Physics
ISSN: 21699380
出版年: 2018
卷: 123, 期: 8 起始页码: 6223
结束页码: 6230
语种: 英语
英文关键词: causally related
; coincidence occurrence rate
; efficiency
; EMIC wave
; random coincidence occurrence rate
; relativistic electron precipitation
英文摘要: Electromagnetic ion cyclotron (EMIC) waves have been proposed to cause relativistic electron precipitation (REP). In our study, we carry out 4 years of analysis from 2013 to 2016, with REP spikes obtained from POES satellites and EMIC waves observation from Van Allen Probes. Among the 473 coincidence events when POES satellites go through the region conjugate to EMIC wave activity, only 127 are associated with REP. Additionally, the coincidence occurrence rate is about 10% higher than the random coincidence occurrence rate, indicating that EMIC waves and relativistic electrons can be statistically related, but the link is weaker than expected. H+ band EMIC waves have been regarded as less important than He+ band EMIC waves for the precipitation of relativistic electrons. We demonstrate that the proportion of H+ band EMIC wave events that are associated with REP (22% to 32%) is slightly higher than for He+ band EMIC wave activity (18% to 27%). An even greater proportion (25% to 40%) of EMIC waves are accompanied by REP events when H+ band and He+ band EMIC waves occur simultaneously. ©2018. American Geophysical Union. All Rights Reserved. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/113359
Appears in Collections: 气候减缓与适应
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作者单位: Department of Physics and Astronomy, Dartmouth College, Hanover, NH, United States
Recommended Citation:
Qin M.,Hudson M.,Millan R.,et al. Statistical Investigation of the Efficiency of EMIC Waves in Precipitating Relativistic Electrons[J]. Journal of Geophysical Research: Space Physics,2018-01-01,123(8)