Ion heating by Alfven waves associated with dipolarization in the magnetotail: Two-dimensional global hybrid simulation
文献类型：期刊论文
| 作者 | Guo, Zhifang1,2; Wu, Mingyu3,4; Du, Aimin1 |
| 刊名 | JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
 |
| 出版日期 | 2016-02-01 |
| 卷号 | 121期号:2页码:1124-1136 |
| 关键词 | Hybrid Simulation Alfven Waves Ion Heating |
| DOI | 10.1002/2015JA022068 |
| 文献子类 | Article |
| 英文摘要 | In this paper, ion heating by Alfven waves associated with dipolarization in the near-Earth magnetotail is investigated by performing a two-dimensional (2-D) global-scale hybrid simulation. In our simulation, the earthward propagating plasma flow is initialized by the ExB drift near the equatorial plane due to the existence of the dawn-dusk convection electric field. When the earthward flow reaches the strong dipole field region, it is braked by the geomagnetic field and simultaneously leads to the pileup of the magnetic flux. This continuous pileup finally results in the formation of the large-scale dipolarization. Dipolarization first appears around (x,z)=(-10.5,0.3)R-E (where R-E is the radius of Earth) and subsequently spreads tailward. In the dipolarization region, Alfven waves are excited and cause the scattering and heating of ions. The heating is mainly on the perpendicular direction. Therefore, the ion temperature anisotropy can be formed in the dipolarization region. Our work provides one possible mechanism for the ion heating and anisotropic distributions observed near the dipolarization region. |
| WOS关键词 | SUBSTORM CURRENT WEDGE ; LOW-FREQUENCY WAVES ; EARTH PLASMA SHEET ; BURSTY BULK FLOWS ; HIGH-SPEED FLOWS ; MAGNETIC-FIELD ; DRIVEN RECONNECTION ; CURRENT DISRUPTION ; EXPANSION ; TAIL |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000373002100014 |
| 资助机构 | National Basic Research Program of China(2014CB845903 ; National Basic Research Program of China(2014CB845903 ; National Basic Research Program of China(2014CB845903 ; National Basic Research Program of China(2014CB845903 ; National Science Foundation of China(41174122 ; National Science Foundation of China(41174122 ; National Science Foundation of China(41174122 ; National Science Foundation of China(41174122 ; 012CB825604) ; 012CB825604) ; 012CB825604) ; 012CB825604) ; 41374171 ; 41374171 ; 41374171 ; 41374171 ; 41404129) ; 41404129) ; 41404129) ; 41404129) ; National Basic Research Program of China(2014CB845903 ; National Basic Research Program of China(2014CB845903 ; National Basic Research Program of China(2014CB845903 ; National Basic Research Program of China(2014CB845903 ; National Science Foundation of China(41174122 ; National Science Foundation of China(41174122 ; National Science Foundation of China(41174122 ; National Science Foundation of China(41174122 ; 012CB825604) ; 012CB825604) ; 012CB825604) ; 012CB825604) ; 41374171 ; 41374171 ; 41374171 ; 41374171 ; 41404129) ; 41404129) ; 41404129) ; 41404129) |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/53447]  |
| 专题 | 地质与地球物理研究所_中国科学院地球与行星物理重点实验室 |
| 作者单位 | 1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Earth & Planetary Phys, Beijing, Peoples R China 2.Univ Chinese Acad Sci, Beijing, Peoples R China 3.Univ Sci & Technol China, Dept Geophys & Planetary Sci, CAS Key Lab Geospace Environm, Hefei 230026, Peoples R China 4.Collaborat Innovat Ctr Astronaut Sci & Technol, Harbin, Peoples R China |
| 推荐引用方式 GB/T 7714 | Guo, Zhifang,Wu, Mingyu,Du, Aimin. Ion heating by Alfven waves associated with dipolarization in the magnetotail: Two-dimensional global hybrid simulation[J]. JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS,2016,121(2):1124-1136. |
| APA | Guo, Zhifang,Wu, Mingyu,&Du, Aimin.(2016).Ion heating by Alfven waves associated with dipolarization in the magnetotail: Two-dimensional global hybrid simulation.JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS,121(2),1124-1136. |
| MLA | Guo, Zhifang,et al."Ion heating by Alfven waves associated with dipolarization in the magnetotail: Two-dimensional global hybrid simulation".JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS 121.2(2016):1124-1136. |
入库方式： OAI收割
来源：地质与地球物理研究所
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