Characteristics of middle- to low-latitude Pi2 excited by bursty bulk flows
文献类型：期刊论文
| 作者 | Cao, Jinbin1; Duan, Juntao1; Du, Aiming2; Ma, Yuduan1; Liu, Zhenxin1; Zhou, G. C.1; Yang, Dongmei3; Zhang, Tielong4; Li, Xinlin5,6; Vellante, Massimo7 |
| 刊名 | JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
 |
| 出版日期 | 2008-05-29 |
| 卷号 | 113期号:A7 |
| ISSN号 | 0148-0227 |
| DOI | 10.1029/2007JA012629 |
| 文献子类 | Article |
| 英文摘要 | This paper, by using the data of Cluster, TC-1, GOES, and eight ground stations on 22 October 2004, studied the characteristics of low-latitude Pi2s generated by an earthward bursty bulk flow ( BBF) in the near-Earth tail plasma sheet. The BBF excited simultaneously two distinct classes of Pi2s: one is long-period Pi2 ( 90-130 s) and the other is short-period Pi2 ( similar to 50s). The long-period Pi2 is transient response type Pi2 associated with field-aligned current produced by the braking of BBFs. The spectrum analysis show that the amplitude spectrum peak of long-period Pi2 increases with increasing latitude, indicating that the source is at higher latitudes. The time delay for the propagation of Alfven waves from Cluster to the Earth is very close to the time difference between the onset time of the BBFs at Cluster and the starting time of the long-period Pi2 on the ground. The short-period Pi2 is a global cavity mode since the Pi2s in H components at eight stations have almost the same starting time, same oscillation period, and same waveform, which are all typical characteristics of cavity mode. The amplitude spectrum peak of short-period Pi2 at NCK (N42.7) is larger than those at higher-station UPS (N56.5) and lower-station CST (N40.8). The polarization analysis at three lower-latitude stations shows that the polarization underwent two reversals. The major axis of the polarization ellipse points to approximately the north, indicating that the short-period Pi2s are not excited by nightside current system. TC-1 observed transverse mode Pi2s. Its period is almost identical with the periods of Pi2 on the ground, indicating they belong to the same wave. |
| WOS关键词 | MAGNETIC PULSATIONS ; PLASMA SHEET ; MAGNETOSPHERE ; SUBSTORM ; SATELLITE ; PROPAGATION ; GENERATION ; DYNAMICS |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000256362200001 |
| 出版者 | AMER GEOPHYSICAL UNION |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/69040]  |
| 专题 | 中国科学院地质与地球物理研究所 |
| 通讯作者 | Cao, Jinbin |
| 作者单位 | 1.CSSAR, Key Lab Space Weather, Beijing 100080, Peoples R China 2.CAS, Inst Geol & Geophys, Beijing 100029, Peoples R China 3.CEA, Inst Geophys, Beijing 100081, Peoples R China 4.Austrian Acad Sci, Space Res Inst, A-8042 Graz, Austria 5.Univ Colorado, Dept Aerosp Engn Sci, Boulder, CO 80309 USA 6.Univ Colorado, LASP, Boulder, CO 80309 USA 7.Univ Aquila, Dipartimento Fis, I-67010 Coppito, Italy 8.Ctr Etud Spatiale Rayonnements, F-31028 Toulouse, France 9.Univ London Imperial Coll Sci Technol & Med, London SW7 2BZ, England 10.Univ Massachusetts, Ctr Atomospher Res, Lowell, MA 02215 USA |
| 推荐引用方式 GB/T 7714 | Cao, Jinbin,Duan, Juntao,Du, Aiming,et al. Characteristics of middle- to low-latitude Pi2 excited by bursty bulk flows[J]. JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS,2008,113(A7). |
| APA | Cao, Jinbin.,Duan, Juntao.,Du, Aiming.,Ma, Yuduan.,Liu, Zhenxin.,...&Li, Qi.(2008).Characteristics of middle- to low-latitude Pi2 excited by bursty bulk flows.JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS,113(A7). |
| MLA | Cao, Jinbin,et al."Characteristics of middle- to low-latitude Pi2 excited by bursty bulk flows".JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS 113.A7(2008). |
入库方式： OAI收割
来源：地质与地球物理研究所
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