Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1002/2016GL071807 |
Evidence of sub-MeV EMIC-driven electron precipitation | |
Hendry, Aaron T.1; Rodger, Craig J.1; Clilverd, Mark A.2 | |
2017-02-16 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS
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ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2017 |
卷号 | 44期号:3 |
文章类型 | Article |
语种 | 英语 |
国家 | New Zealand; England |
英文摘要 | Electromagnetic ion cyclotron (EMIC) waves are potentially important drivers of the loss of energetic electrons from the radiation belts. Numerous theoretical calculations exist with conflicting predictions of one of the key parameters: the minimum resonance energy of electrons precipitated into the atmosphere by EMIC waves. In this study we initially analyze an EMIC electron precipitation event using data from two different spacecraft instruments to investigate the energies involved. Combining observations from these satellites, we find that the electron precipitation has a peak flux at similar to 250 keV. Extending the analysis technique to a previously published database of similar scattering events, we find that the peak electron precipitation flux occurs predominantly around 300 keV, with only similar to 11% of events peaking in the 1-4 MeV range. Such a significant population of low-energy EMIC-driven electron precipitation events highlights the possibility for EMIC waves to be significant drivers of radiation belt electron losses. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000396115000003 |
WOS关键词 | ION-CYCLOTRON WAVES ; PITCH-ANGLE SCATTERING ; VAN ALLEN PROBES ; RELATIVISTIC ELECTRONS ; BELT ; SPECTROMETER ; SIMULATION ; DEMETER ; CRRES |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/27558 |
专题 | 气候变化 |
作者单位 | 1.Univ Otago, Dept Phys, Dunedin, New Zealand; 2.British Antarctic Survey NERC, Cambridge, England |
推荐引用方式 GB/T 7714 | Hendry, Aaron T.,Rodger, Craig J.,Clilverd, Mark A.. Evidence of sub-MeV EMIC-driven electron precipitation[J]. GEOPHYSICAL RESEARCH LETTERS,2017,44(3). |
APA | Hendry, Aaron T.,Rodger, Craig J.,&Clilverd, Mark A..(2017).Evidence of sub-MeV EMIC-driven electron precipitation.GEOPHYSICAL RESEARCH LETTERS,44(3). |
MLA | Hendry, Aaron T.,et al."Evidence of sub-MeV EMIC-driven electron precipitation".GEOPHYSICAL RESEARCH LETTERS 44.3(2017). |
条目包含的文件 | 条目无相关文件。 |
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