| DOI: | 10.1002/2015GL067063
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| 论文题名: | Compressibility of Mercury's dayside magnetosphere |
| 作者: | Zhong J.; Wan W.X.; Wei Y.; Slavin J.A.; Raines J.M.; Rong Z.J.; Chai L.H.; Han X.H.
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| 刊名: | Geophysical Research Letters
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| ISSN: | 0094-8356
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| EISSN: | 1944-8087
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| 出版年: | 2015
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| 卷: | 42, 期:23 | | 起始页码: | 10135
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| 结束页码: | 10139
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| 语种: | 英语
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| 英文关键词: | induction effects
; magnetic reconnection
; magnetopause
; magnetosphere
; Mercury
; solar wind standoff distance
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| Scopus关键词: | Magnetopause
; Magnetosphere
; Solar wind
; Structural dynamics
; Wind effects
; Eccentric orbits
; Heliocentric distances
; Induction effects
; Magnetic reconnections
; Solar wind pressure
; Space environment
; Stand-off distance (SoD)
; Temporal variation
; Mercury (metal)
; compressibility
; magnetopause
; magnetosphere
; Mercury (planet)
; solar wind
; wind forcing
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| 英文摘要: | The Mercury is experiencing significant variations of solar wind forcing along its large eccentric orbit. With 12 Mercury years of data from Mercury Surface, Space ENvironment, GEochemistry, and Ranging, we demonstrate that Mercury's distance from the Sun has a great effect on the size of the dayside magnetosphere that is much larger than the temporal variations. The mean solar wind standoff distance was found to be about 0.27 Mercury radii (RM) closer to the Mercury at perihelion than at aphelion. At perihelion the subsolar magnetopause can be compressed below 1.2 RM of ∼2.5% of the time. The relationship between the average magnetopause standoff distance and heliocentric distance suggests that on average the effects of the erosion process appears to counter balance those of induction in Mercury's interior at perihelion. However, at aphelion, where solar wind pressure is lower and Alfvénic Mach number is higher, the effects of induction appear dominant. © 2015. American Geophysical Union. All Rights Reserved. |
| URL: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-84953638364&doi=10.1002%2f2015GL067063&partnerID=40&md5=3fd2600c0e2bd2a444f140216bf7edb4
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| Citation statistics: |
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| 资源类型: | 期刊论文
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/7972
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| Appears in Collections: | 科学计划与规划
气候变化与战略
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作者单位: | Key Laboratory of Earth and Planetary Physics, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing, China
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| Recommended Citation: | |
Zhong J.,Wan W.X.,Wei Y.,et al. Compressibility of Mercury's dayside magnetosphere[J]. Geophysical Research Letters,2015-01-01,42(23).
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