Magnetic configurations of the tilted current sheets in magnetotail
文献类型：期刊论文
| 作者 | Shen, C.1; Rong, Z. J.2; Li, X.3; Dunlop, M.4; Liu, Z. X.1; Malova, H. V.6; Lucek, E.5; Carr, C.5 |
| 刊名 | Annales geophysicae
 |
| 出版日期 | 2008 |
| 卷号 | 26期号:11页码:3525-3543 |
| 关键词 | Magnetospheric physics Magnetospheric configuration and dynamics Magnetotai Magnetotail boundary layers Space plasma physics Discontinuities |
| ISSN号 | 0992-7689 |
| 通讯作者 | Shen, c.(sc@cssar.ac.cn) |
| 英文摘要 | In this research, the geometrical structures of tilted current sheet and tail flapping waves have been analysed based on multiple spacecraft measurements and some features of the tilted current sheets have been made clear for the first time. the geometrical features of the tilted current sheet revealed in this investigation are as follows: (1) the magnetic field lines (mfls) in the tilted current sheet are generally plane curves and the osculating planes in which the mfls lie are about vertical to the equatorial plane, while the normal of the tilted current sheet leans severely to the dawn or dusk side. (2) the tilted current sheet may become very thin, the half thickness of its neutral sheet is generally much less than the minimum radius of the curvature of the mfls. (3) in the neutral sheet, the field-aligned current density becomes very large and has a maximum value at the center of the current sheet. (4) in some cases, the current density is a bifurcated one, and the two humps of the current density often superpose two peaks in the gradient of magnetic strength, indicating that the magnetic gradient drift current is possibly responsible for the formation of the two humps of the current density in some tilted current sheets. tilted current sheets often appear along with tail current sheet flapping waves. it is found that, in the tail flapping current sheets, the minimum curvature radius of the mfls in the current sheet is rather large with values around 1r(e), while the neutral sheet may be very thin, with its half thickness being several tenths of r-e. during the flapping waves, the current sheet is tilted substantially, and the maximum tilt angle is generally larger than 45 degrees. the phase velocities of these flapping waves are several tens km/s, while their periods and wavelengths are several tens of minutes, and several earth radii, respectively. these tail flapping events generally last several hours and occur during quiet periods or periods of weak magnetospheric activity. |
| WOS关键词 | NEUTRAL SHEET ; CLUSTER MEASUREMENTS ; PLASMA SHEET ; FIELD ; TAIL ; SUBSTORM ; MOTIONS ; MISSION |
| WOS研究方向 | Astronomy & Astrophysics ; Geology ; Meteorology & Atmospheric Sciences |
| WOS类目 | Astronomy & Astrophysics ; Geosciences, Multidisciplinary ; Meteorology & Atmospheric Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:000262409400028 |
| 出版者 | COPERNICUS GESELLSCHAFT MBH |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2385725 |
| 专题 | 中国科学院大学 |
| 通讯作者 | Shen, C. |
| 作者单位 | 1.Chinese Acad Sci, Ctr Space Sci & Appl Res, State Key Lab Space Weather, Beijing 100190, Peoples R China 2.Chinese Acad Sci, Grad Univ, Coll Earth Sci, Beijing 100049, Peoples R China 3.Univ Colorado, Atmospher & Space Phys Lab, Boulder, CO 80309 USA 4.Rutherford Appleton Lab, DIDCOT, Didcot OX11 0QX, Oxon, England 5.Univ London Imperial Coll Sci Technol & Med, London, England 6.Moscow MV Lomonosov State Univ, Inst Nucl Phys, Moscow 119899, Russia |
| 推荐引用方式 GB/T 7714 | Shen, C.,Rong, Z. J.,Li, X.,et al. Magnetic configurations of the tilted current sheets in magnetotail[J]. Annales geophysicae,2008,26(11):3525-3543. |
| APA | Shen, C..,Rong, Z. J..,Li, X..,Dunlop, M..,Liu, Z. X..,...&Carr, C..(2008).Magnetic configurations of the tilted current sheets in magnetotail.Annales geophysicae,26(11),3525-3543. |
| MLA | Shen, C.,et al."Magnetic configurations of the tilted current sheets in magnetotail".Annales geophysicae 26.11(2008):3525-3543. |
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来源：中国科学院大学
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