Frequency sweep rates of rising tone electromagnetic ion cyclotron waves: Comparison between nonlinear theory and Cluster observation
文献类型：期刊论文
| 作者 | He, Zhaoguo; Zong, Qiugang; Liu, Siqing; Wang, Yongfu; Lin, Ruilin; Shi, Liqin |
| 刊名 | PHYSICS OF PLASMAS
 |
| 出版日期 | 2014 |
| 卷号 | 21期号:12页码:122309 |
| ISSN号 | 1070-664X |
| 通讯作者 | He, ZG (reprint author), Chinese Acad Sci, Ctr Space Sci & Appl Res, Beijing 100190, Peoples R China. |
| 英文摘要 | Resonant pitch angle scattering by electromagnetic ion cyclotron (EMIC) waves has been suggested to account for the rapid loss of ring current ions and radiation belt electrons. For the rising tone EMIC wave (classified as triggered EMIC emission), its frequency sweep rate strongly affects the efficiency of pitch-angle scattering. Based on the Cluster observations, we analyze three typical cases of rising tone EMIC waves. Two cases locate at the nightside (22.3 and 22.6 magnetic local time (MLT)) equatorial region and one case locates at the duskside (18MLT) higher magnetic latitude (lambda = -9.3 degrees) region. For the three cases, the time-dependent wave amplitude, cold electron density, and cold ion density ratio are derived from satellite data; while the ambient magnetic field, thermal proton perpendicular temperature, and the wave spectral can be directly provided by observation. These parameters are input into the nonlinear wave growth model to simulate the time-frequency evolutions of the rising tones. The simulated results show good agreements with the observations of the rising tones, providing further support for the previous finding that the rising tone EMIC wave is excited through the nonlinear wave growth process. (C) 2014 AIP Publishing LLC. |
| 收录类别 | SCI ; EI |
| 语种 | 英语 |
| 源URL | [http://ir.nssc.ac.cn/handle/122/4377]  |
| 专题 | 国家空间科学中心_空间环境部 |
| 推荐引用方式 GB/T 7714 | He, Zhaoguo,Zong, Qiugang,Liu, Siqing,et al. Frequency sweep rates of rising tone electromagnetic ion cyclotron waves: Comparison between nonlinear theory and Cluster observation[J]. PHYSICS OF PLASMAS,2014,21(12):122309. |
| APA | He, Zhaoguo,Zong, Qiugang,Liu, Siqing,Wang, Yongfu,Lin, Ruilin,&Shi, Liqin.(2014).Frequency sweep rates of rising tone electromagnetic ion cyclotron waves: Comparison between nonlinear theory and Cluster observation.PHYSICS OF PLASMAS,21(12),122309. |
| MLA | He, Zhaoguo,et al."Frequency sweep rates of rising tone electromagnetic ion cyclotron waves: Comparison between nonlinear theory and Cluster observation".PHYSICS OF PLASMAS 21.12(2014):122309. |
入库方式： OAI收割
来源：国家空间科学中心
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