Characteristics of the interplanetary coronal mass ejections in the heliosphere between 0.3 and 5.4 AU
文献类型：期刊论文
| 作者 | Wang, C. ; Du, D. ; Richardson, J. D. |
| 刊名 | Journal of Geophysical Research-Space Physics
 |
| 出版日期 | 2005 |
| 卷号 | 110期号:A10页码:A10107 |
| 关键词 | solar-wind magnetic clouds temperature cme disturbances velocity passage voyager ulysses shock |
| ISSN号 | 0148-0227 |
| 通讯作者 | 北京8701信箱 |
| 英文摘要 | We identify and characterize interplanetary coronal mass ejections (ICMEs) observed by spacecraft in the solar wind, namely Helios 1 and 2, PVO, ACE, and Ulysses, which together cover heliocentric distances from 0.3 to 5.4 AU. The primary identification signature used to look for ICMEs is abnormally low proton temperatures. About 600 probable ICMEs were identified from the solar wind plasma and magnetic field data from these spacecraft. We use these events to study the radial evolution of ICMEs between 0.3 and 5.4 AU, mainly in a statistical sense. The occurrence rate of ICME approximately follows the solar activity cycle. ICMEs expand as they move outward since the internal pressure is generally larger than the external pressure. The average radial width of ICMEs increases with distance. ICMEs expand by a factor of 2.7 in radial width between 1 and 5 AU. The radial expansion speed of ICMEs decreases with distance and is of the order of the Alfven speed. The density and magnetic field magnitude decrease faster in ICMEs, which fall off with distance R as R-2.4 and R-1.5, respectively, than in the ambient solar wind; however, the temperature decreases as R-0.7, slightly less rapid than in the ambient solar wind. These results are consistent with previous findings with relatively limited data coverage. We also use a one-dimensional MHD model to investigate the radial expansion of the ICMEs and find that the radial expansion speed is of the order of the Alfven speed, consistent with the observations. |
| 学科主题 | 空间物理 |
| 收录类别 | SCI |
| 原文出处 | http://www.agu.org/pubs/crossref/2005/2005JA011198.shtml |
| 语种 | 英语 |
| 源URL | [http://ir.cssar.ac.cn/handle/122/1021]  |
| 专题 | 国家空间科学中心_空间科学部 |
| 推荐引用方式 GB/T 7714 | Wang, C.,Du, D.,Richardson, J. D.. Characteristics of the interplanetary coronal mass ejections in the heliosphere between 0.3 and 5.4 AU[J]. Journal of Geophysical Research-Space Physics,2005,110(A10):A10107. |
| APA | Wang, C.,Du, D.,&Richardson, J. D..(2005).Characteristics of the interplanetary coronal mass ejections in the heliosphere between 0.3 and 5.4 AU.Journal of Geophysical Research-Space Physics,110(A10),A10107. |
| MLA | Wang, C.,et al."Characteristics of the interplanetary coronal mass ejections in the heliosphere between 0.3 and 5.4 AU".Journal of Geophysical Research-Space Physics 110.A10(2005):A10107. |
入库方式： OAI收割
来源：国家空间科学中心
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。