Competition between acceleration and loss mechanisms of relativistic electrons during geomagnetic storms
文献类型：期刊论文
| 作者 | Summers, D; Ma, C; Mukai, T |
| 刊名 | JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
 |
| 出版日期 | 2004-04-24 |
| 卷号 | 109期号:A4页码:A04221 |
| ISSN号 | 0148-0227 |
| 关键词 | geomagnetic storms outer radiation belt relativistic electrons |
| 英文摘要 | [1] We demonstrate quantitatively that whether a geomagnetic storm results in an increase or decrease of relativistic electrons in the outer zone depends on the competition between the physical processes producing the energization and loss of electrons. We construct a simplified one-dimensional model for the electron energy distribution incorporating electron energization by cyclotron resonant interaction with whistler-mode chorus, and electron losses due to pitch angle scattering into the loss cone by combined plasma waves ( in particular, electromagnetic ion cyclotron waves and plasmaspheric hiss). We do not include radial diffusion explicitly since the model applies to the region 3 < L < 5 where radial diffusion is expected to be weak. We treat the chorus wave amplitude and electron loss rate as model input variables and compute the solution for the electron energy distribution as the model output. The extent of the electron flux increase or decrease during the event is found to be sensitively controlled by the magnitudes of the wave amplitude and electron loss rate. |
| 学科主题 | Astronomy & Astrophysics |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 类目[WOS] | Astronomy & Astrophysics |
| 研究领域[WOS] | Astronomy & Astrophysics |
| 关键词[WOS] | OUTER RADIATION BELT ; MAGNETIC STORM ; OCTOBER 9 ; ENERGIES ; CHORUS ; MAGNETOSPHERE ; ENERGIZATION ; MICROBURSTS ; DIFFUSION ; WAVES |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000221087800006 |
| 公开日期 | 2012-12-22 |
| 源URL | [http://libir.pmo.ac.cn/handle/332002/7766]  |
| 专题 | 紫金山天文台_期刊（老文献） |
| 作者单位 | 1.Mem Univ Newfoundland, Dept Math & Stat, St John, NF A1C 5S7, Canada 2.Chinese Acad Sci, Purple Mt Observ, Nanjing 210008, Peoples R China 3.Japan Aerosp Explorat Agcy, Inst Space & Astronaut Sci, Kanagawa 2298510, Japan 4.Univ KwaZulu Natal, Sch Pure & Appl Phys, Durban, South Africa |
| 推荐引用方式 GB/T 7714 | Summers, D,Ma, C,Mukai, T. Competition between acceleration and loss mechanisms of relativistic electrons during geomagnetic storms[J]. JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS,2004,109(A4):A04221. |
| APA | Summers, D,Ma, C,&Mukai, T.(2004).Competition between acceleration and loss mechanisms of relativistic electrons during geomagnetic storms.JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS,109(A4),A04221. |
| MLA | Summers, D,et al."Competition between acceleration and loss mechanisms of relativistic electrons during geomagnetic storms".JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS 109.A4(2004):A04221. |
入库方式： OAI收割
来源：紫金山天文台
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。