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DOI | 10.1002/2017GL074869 |
Multiple-Satellite Observation of Magnetic Dip Event During the Substorm on 10 October 2013 | |
He, Zhaoguo1,2,3; Chen, Lunjin3; Zhu, Hui3; Xia, Zhiyang3; Reeves, G. D.4; Xiong, Ying5,6; Xie, Lun5,6; Cao, Yong1 | |
2017-09-28 | |
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:18 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China; USA |
英文摘要 | We present a multiple-satellite observation of the magnetic dip event during the substorm on 10 October 2013. The observation illustrates the temporal and spatial evolution of the magnetic dip and gives a compelling evidence that ring current ions induce the magnetic dip by enhanced plasma beta. The dip moves with the energetic ions in a comparable drift velocity and affects the dynamics of relativistic electrons in the radiation belt. In addition, the magnetic dip provides a favorable condition for the electromagnetic ion cyclotron (EMIC) wave generation based on the linear theory analysis. The calculated proton diffusion coefficients show that the observed EMIC wave can lead to the pitch angle scattering losses of the ring current ions, which in turn partially relax the magnetic dip in the observations. This study enriches our understanding of magnetic dip evolution and demonstrates the important role of the magnetic dip for the coupling of radiation belt and ring current. |
英文关键词 | magnetic dip ring current ions radiation belt electrons EMIC wave |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000413148100007 |
WOS关键词 | ION-CYCLOTRON WAVES ; PITCH-ANGLE ; GEOMAGNETIC STORMS ; DYNAMICS ; DRIVEN ; PLASMA |
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/27407 |
专题 | 气候变化 |
作者单位 | 1.Harbin Inst Technol, Shenzhen Grad Sch, Shenzhen, Peoples R China; 2.Univ Sci & Technol China, Chinese Acad Sci, Key Lab Geospace Environm, Hefei, Anhui, Peoples R China; 3.Univ Texas Dallas, Dept Phys, Richardson, TX 75083 USA; 4.Los Alamos Natl Lab, Space Sci & Applicat Grp, Los Alamos, NM USA; 5.Peking Univ, Sch Earth & Space Sci, Beijing, Peoples R China; 6.Peking Univ, PKU UCLA Joint Res Inst Sci & Engn, Beijing, Peoples R China |
推荐引用方式 GB/T 7714 | He, Zhaoguo,Chen, Lunjin,Zhu, Hui,et al. Multiple-Satellite Observation of Magnetic Dip Event During the Substorm on 10 October 2013[J]. GEOPHYSICAL RESEARCH LETTERS,2017,44(18). |
APA | He, Zhaoguo.,Chen, Lunjin.,Zhu, Hui.,Xia, Zhiyang.,Reeves, G. D..,...&Cao, Yong.(2017).Multiple-Satellite Observation of Magnetic Dip Event During the Substorm on 10 October 2013.GEOPHYSICAL RESEARCH LETTERS,44(18). |
MLA | He, Zhaoguo,et al."Multiple-Satellite Observation of Magnetic Dip Event During the Substorm on 10 October 2013".GEOPHYSICAL RESEARCH LETTERS 44.18(2017). |
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