Surveys on magnetospheric plasmas based on the Double Star Project (DSP) exploration
文献类型：期刊论文
| 作者 | Shen, C. ; Liu, Z. X. ; Escoubet, C. P. ; Carr, C. M. ; Reme, H. ; Fazakerley, A. ; Laakso, H. ; Shi, Q. Q. ; Dandouras, I. ; Zhang, T. L. ; Wang, S. J. ; Yang, X. C. ; Dunlop, M. ; Cao, J. B. |
| 刊名 | Science in China Series E-Technological Sciences
 |
| 出版日期 | 2008 |
| 卷号 | 51期号:10页码:1639-1647 |
| ISSN号 | 1006-9321 |
| 关键词 | Earth's magnetosphere space exploration geomagnetic field space plasmas spacecraft instrument |
| 通讯作者 | 北京8701信箱 |
| 英文摘要 | The equatorial and polar satellites of the Double Star Project (DSP) were launched successfully on December 29, 2003 and July 25, 2004, respectively, and both of them are operating smoothly. The DSP provides a good opportunity for investigating the structure of the magnetosphere. Based on the DSP data collected during 2004, we have surveyed the distribution of the magnetic fields and plasmas in the magnetosphere. It is found that: (1) Near the Earth's equatorial plane within geocentric distances of less than 7 RE, the Earth's magnetic field is dipolar. In the vicinity of the magnetopause, the magnetic field is enhanced by a factor of about 1.5, and on the nightside, the magnetic field can vary significantly from the Earth's dipole field, likely caused by the presence of the near-Earth tail current sheet. (2) In the day-side magnetosheath, the electron and ion densities are usually both in the range of 10-30 cm(-3); the ion and electron temperatures are usually about 200 and 50 eV, respectively. The flow pattern is usually smooth, with a low velocity in the subsolar region and with significantly higher velocities in the dawn and dusk flanks. (3) In the region between the magnetopause and plasmasphere the density is low, approximately 0.5-5 cm(-3), and the temperature is high, about 1-10 keV for ions and 0.1-5 keV for electrons. The ion temperature has an apparent anisotropy, with the ratio of the perpendicular and parallel temperatures being about 1.0-1.3 for the night- and dusk-side magnetosphere and about 1.3-2.0 for the day- and dawn-side magnetosphere. There is an evident sunward convection of about 50 km/s in the magnetosphere. On the dawn side, the flow becomes somewhat turbulent, and in the vicinity of the night-noon meridian plane, the convection is rather slow. (4) The high-energy electrons with energies higher than 2 MeV are mainly located in the regions with 3 < L < 4.5; the size of the high-energy electrons area varies with time, it may expand and shrink occasionally according to different solar wind conditions and magnetic activities. |
| 学科主题 | 空间物理 |
| 收录类别 | SCI |
| 原文出处 | http://www.springerlink.com/content/xg27q30723r2k2n1/fulltext.pdf |
| 语种 | 英语 |
| 源URL | [http://ir.cssar.ac.cn/handle/122/1108]  |
| 专题 | 国家空间科学中心_空间科学部 |
| 推荐引用方式 GB/T 7714 | Shen, C.,Liu, Z. X.,Escoubet, C. P.,et al. Surveys on magnetospheric plasmas based on the Double Star Project (DSP) exploration[J]. Science in China Series E-Technological Sciences,2008,51(10):1639-1647. |
| APA | Shen, C..,Liu, Z. X..,Escoubet, C. P..,Carr, C. M..,Reme, H..,...&Cao, J. B..(2008).Surveys on magnetospheric plasmas based on the Double Star Project (DSP) exploration.Science in China Series E-Technological Sciences,51(10),1639-1647. |
| MLA | Shen, C.,et al."Surveys on magnetospheric plasmas based on the Double Star Project (DSP) exploration".Science in China Series E-Technological Sciences 51.10(2008):1639-1647. |
入库方式： OAI收割
来源：国家空间科学中心
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