GSTDTAP  > 气候变化
DOI10.1029/2020GL087559
Nonlinear Response of the Cross Polar Cap Potential to Solar Wind Density Under Northward Interplanetary Magnetic Field
Yang, Ziyi1,2,3; Zhang, Binzheng4; Lei, Jiuhou1,2,3; Dang, Tong1,2,3
2020-04-28
发表期刊GEOPHYSICAL RESEARCH LETTERS
ISSN0094-8276
EISSN1944-8007
出版年2020
卷号47期号:8
文章类型Article
语种英语
国家Peoples R China
英文摘要

It is commonly believed that the magnitude and orientation of interplanetary magnetic field (IMF) together with the solar wind (SW) velocity have the most important impact on the cross polar cap potential (phi(pc)), so that little attention has been given to the effect of SW density, especially under northward IMF conditions. Previous studies have shown that phi(pc) increases with SW density as a response to the changes in magnetosheath force balance, while our study shows that phi(pc) has more complicated responses to the SW density depending on the magnitude of IMF rather than a simple linear response as reported previously. The phi(pc) may be insensitive to SW density increasing at moderate IMF B-z (cf. 8 nT) and at intense B-z (20 nT) under large-density conditions. The different behavior of SW density in regulating phi(pc) is mainly due to the competing effects originated from viscous interaction and magnetic reconnection. Further, the physical mechanisms are explored, including the driving sources of the viscous potential and affecting factors of reconnection potential. These results pave the way for better understanding of the SW density effects on solar wind-magnetosphere-ionosphere (SW-M-I) interactions.


英文关键词solar wind density polar cap potential nonlinear response
领域气候变化
收录类别SCI-E
WOS记录号WOS:000530332600013
WOS关键词ENERGY-TRANSFER ; MACH NUMBER ; MAGNETOSPHERE ; MAGNETOSHEATH ; RECONNECTION
WOS类目Geosciences, Multidisciplinary
WOS研究方向Geology
引用统计
被引频次:2[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://119.78.100.173/C666/handle/2XK7JSWQ/279871
专题气候变化
作者单位1.Univ Sci & Technol China, Sch Earth & Space Sci, CAS Key Lab Geospace Environm, Hefei, Peoples R China;
2.Univ Sci & Technol China, CAS Ctr Excellence Comparat Planetol, Hefei, Peoples R China;
3.Univ Sci & Technol China, Mengcheng Natl Geophys Observ, Hefei, Peoples R China;
4.Univ Hong Kong, Dept Earth Sci, Pokfulam, Hong Kong, Peoples R China
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GB/T 7714
Yang, Ziyi,Zhang, Binzheng,Lei, Jiuhou,et al. Nonlinear Response of the Cross Polar Cap Potential to Solar Wind Density Under Northward Interplanetary Magnetic Field[J]. GEOPHYSICAL RESEARCH LETTERS,2020,47(8).
APA Yang, Ziyi,Zhang, Binzheng,Lei, Jiuhou,&Dang, Tong.(2020).Nonlinear Response of the Cross Polar Cap Potential to Solar Wind Density Under Northward Interplanetary Magnetic Field.GEOPHYSICAL RESEARCH LETTERS,47(8).
MLA Yang, Ziyi,et al."Nonlinear Response of the Cross Polar Cap Potential to Solar Wind Density Under Northward Interplanetary Magnetic Field".GEOPHYSICAL RESEARCH LETTERS 47.8(2020).
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