DOI: 10.1002/2013GL058154
论文题名: Solar cycle effects on the ion escape from Mars
作者: Lundin R. ; Barabash S. ; Holmström M. ; Nilsson H. ; Futaana Y. ; Ramstad R. ; Yamauchi M. ; Dubinin E. ; Fraenz M.
刊名: Geophysical Research Letters
ISSN: 0094-8330
EISSN: 1944-8061
出版年: 2013
卷: 40, 期: 23 起始页码: 6028
结束页码: 6032
语种: 英语
英文关键词: ionospheric ion escape
; solar cycle effects on Mars
; solar forcing of Mars
Scopus关键词: Highly-correlated
; Historical records
; ionospheric ion escape
; Martian escape
; Solar activity
; Solar forcing
; Solar-cycle effects
; Sunspot number
; Heavy ions
; Solar radiation
; Solar energy
; data set
; Mars
; numerical model
; solar activity
; solar cycle
; sunspot
; temporal analysis
英文摘要: Solar cycle effects on the escape of planetary ions from Mars are investigated using Mars Express Analyzer of Space Plasmas and Energetic Atoms 3 data from June 2007 to January 2013. Average and median tail fluxes of low-energy (<300 eV) heavy ions (O+, O2 +), derived from the full data set covering 7900 orbits, are highly correlated with the solar activity proxies F10.7 and the sunspot number, Ri. The average heavy ion escape rate increased by a factor of ≈ 10, from ≈ 1 · 1024 s-1 (solar minimum) to ≈ 1 · 1025 s-1 (solar maximum). Combining data from this, and other studies, an empiric model/expression is derived for the Martian escape rate versus solar activity F10.7 and Ri. The model is a useful tool to derive the accumulated ion escape rate from Mars based on historical records of solar activity, with potentials back to the young Sun époque. Key Points Heavy ion escape from Mars positively correlated with solar activity Ri and F10.7 Heavy ion escape rate increase by a factor of 10 during solar cycle 24 (min-max) An empiric model for heavy ion escape rate versus solar activity is derived ©2013. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84891611976&doi=10.1002%2f2013GL058154&partnerID=40&md5=43bf638ae34a3b8bc2c16e6d7a3d9aeb
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/5594
Appears in Collections: 气候减缓与适应
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作者单位: Swedish Institute of Space Physics, Umeå, SE-901 87, Sweden
Recommended Citation:
Lundin R.,Barabash S.,Holmström M.,et al. Solar cycle effects on the ion escape from Mars[J]. Geophysical Research Letters,2013-01-01,40(23).