THE FORMATION OF ROTATIONAL DISCONTINUITIES IN COMPRESSIVE THREE-DIMENSIONAL MHD TURBULENCE
文献类型：期刊论文
| 作者 | Yang, Liping; Zhang, Lei; He, Jiansen; Tu, Chuanyi; Wang, Linghua; Marsch, Eckart; Wang, Xin; Zhang, Shaohua; Feng, Xueshang |
| 刊名 | ASTROPHYSICAL JOURNAL
 |
| 出版日期 | 2015 |
| 卷号 | 809期号:2页码:155 |
| 关键词 | solar wind turbulence |
| ISSN号 | 0004-637X |
| 通讯作者 | Yang, LP (reprint author), Chinese Acad Sci, SIGMA Weather Grp, Ctr Space Sci & Appl Res, State Key Lab Space Weather, Beijing 100190, Peoples R China. |
| 英文摘要 | Measurements of solar wind turbulence reveal the ubiquity of discontinuities. In this study we investigate how the discontinuities, especially rotational discontinuities (RDs), are formed in MHD turbulence. In a simulation of the decaying compressive three-dimensional (3D) MHD turbulence with an imposed uniform background magnetic field, we detect RDs with sharp field rotations and little variations of magnetic field intensity, as well as mass density. At the same time, in the de Hoffman-Teller frame, the plasma velocity is nearly in agreement with the Alfven speed, and is field-aligned on both sides of the discontinuity. We take one of the identified RDs to analyze its 3D structure and temporal evolution in detail. By checking the magnetic field and plasma parameters, we find that the identified RD evolves from the steepening of the Alfven wave with moderate amplitude, and that steepening is caused by the nonuniformity of the Alfven speed in the ambient turbulence. |
| 收录类别 | SCI |
| 语种 | 英语 |
| 源URL | [http://ir.nssc.ac.cn/handle/122/5093]  |
| 专题 | 国家空间科学中心_微波遥感部 |
| 推荐引用方式 GB/T 7714 | Yang, Liping,Zhang, Lei,He, Jiansen,et al. THE FORMATION OF ROTATIONAL DISCONTINUITIES IN COMPRESSIVE THREE-DIMENSIONAL MHD TURBULENCE[J]. ASTROPHYSICAL JOURNAL,2015,809(2):155. |
| APA | Yang, Liping.,Zhang, Lei.,He, Jiansen.,Tu, Chuanyi.,Wang, Linghua.,...&Feng, Xueshang.(2015).THE FORMATION OF ROTATIONAL DISCONTINUITIES IN COMPRESSIVE THREE-DIMENSIONAL MHD TURBULENCE.ASTROPHYSICAL JOURNAL,809(2),155. |
| MLA | Yang, Liping,et al."THE FORMATION OF ROTATIONAL DISCONTINUITIES IN COMPRESSIVE THREE-DIMENSIONAL MHD TURBULENCE".ASTROPHYSICAL JOURNAL 809.2(2015):155. |
入库方式： OAI收割
来源：国家空间科学中心
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