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题名: Alfven waves as a solar-interplanetary driver of the thermospheric disturbances
作者: Guo, Jianpeng; Wei, Fengsi; Feng, Xueshang; Liu, Huixin; Wan, Weixing; Yang, Zhiliang; Xu, Jiyao; Liu, Chaoxu
作者部门: 空间科学部
通讯作者: Guo, JP (reprint author), Chinese Acad Sci, Natl Space Sci Ctr, State Key Lab Space Weather, Beijing 100190, Peoples R China.
刊名: SCIENTIFIC REPORTS
ISSN号: 2045-2322
出版日期: 2016
卷号: 6, 页码:18895
收录类别: SCI
项目资助者: Chinese Academy of Sciences [KZZD-EW-01-4] ; 973 program [2012CB825601] ; National Natural Science Foundation of China [41231068, 41374187, 41531073, U1231104] ; Specialized Research Fund for State Key Laboratories ; JSPS KAKENHI [15K05301, 15H02135, 15H03733]
英文摘要: Alfven waves have been proposed as an important mechanism for the heating of the Sun's outer atmosphere and the acceleration of solar wind, but they are generally believed to have no significant impact on the Earth's upper atmosphere under quiet geomagnetic conditions due to their highly fluctuating nature of interplanetary magnetic field (i.e., intermittent southward magnetic field component). Here we report that a long-duration outward propagating Alfven wave train carried by a high-speed stream produced continuous (similar to 2 days) and strong (up to +/- 40%) density disturbances in the Earth's thermosphere in a way by exciting multiple large-scale gravity waves in auroral regions. The observed ability of Alfven waves to excite large-scale gravity waves, together with their proved ubiquity in the solar atmosphere and solar wind, suggests that Alfven waves could be an important solar-interplanetary driver of the global thermospheric disturbances.
语种: 英语
内容类型: 期刊论文
URI标识: http://ir.nssc.ac.cn/handle/122/5665
Appears in Collections:空间科学部_期刊论文

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