On the envelope soliton below the H+ gyrofrequency in low auroral region
文献类型：期刊论文
| 作者 | Wang, DY; Huang, GL; Falthammar, CG |
| 刊名 | ASTROPHYSICS AND SPACE SCIENCE
 |
| 出版日期 | 2002 |
| 卷号 | 282期号:2页码:421-432 |
| 英文摘要 | Two envelope soliton events below the H+ gyrofrequency with localized density depletion were discovered in low auroral region (similar to 1760 km) by Freja satellite. These events were correlated in time with the observations of the ratio of oxygen ion density to hydrogen ion density sharp increase and the electrons energization. These envelope solitons have a characteristic frequency at similar to180-190 Hz, which are obviously different from the electron-ion lower hybrid wave frequency and the helium ion gyrofrequency in low auroral plasma, but it is close to the resonance frequency of hydrogen ion-oxygen ion hybrid wave. A modulational instability model of an ion-ion hybrid wave has been discussed here. It is found that the envelope soliton below the H+ gyrofrequency in low auroral region may be generated by this modulational instability on condition that the local oxygen ion density is larger than the local hydrogen ion density. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 类目[WOS] | Astronomy & Astrophysics |
| 研究领域[WOS] | Astronomy & Astrophysics |
| 关键词[WOS] | LOWER-HYBRID WAVES ; FREJA OBSERVATIONS ; ION-ACCELERATION ; ELECTRON-PRECIPITATION ; ELF WAVES ; PLASMA ; IONOSPHERE |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000178929400006 |
| 源URL | [http://libir.pmo.ac.cn/handle/332002/15806]  |
| 专题 | 紫金山天文台_太阳活动的多波段观测研究团组 |
| 作者单位 | 1.Acad Sinica, Purple Mt Observ, Nanjing 210008, Peoples R China 2.Royal Inst Technol, Alfven Lab, S-10044 Stockholm, Sweden |
| 推荐引用方式 GB/T 7714 | Wang, DY,Huang, GL,Falthammar, CG. On the envelope soliton below the H+ gyrofrequency in low auroral region[J]. ASTROPHYSICS AND SPACE SCIENCE,2002,282(2):421-432. |
| APA | Wang, DY,Huang, GL,&Falthammar, CG.(2002).On the envelope soliton below the H+ gyrofrequency in low auroral region.ASTROPHYSICS AND SPACE SCIENCE,282(2),421-432. |
| MLA | Wang, DY,et al."On the envelope soliton below the H+ gyrofrequency in low auroral region".ASTROPHYSICS AND SPACE SCIENCE 282.2(2002):421-432. |
入库方式： OAI收割
来源：紫金山天文台
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