DOI: 10.1002/2014GL060610
论文题名: The Siding Spring cometary encounter with Mars: A natural experiment for the Martian atmosphere?
作者: Moores J.E. ; McConnochie T.H. ; Ming D.W. ; Archer P.D. ; Jr. ; Schuerger A.C.
刊名: Geophysical Research Letters
ISSN: 0094-10020
EISSN: 1944-9751
出版年: 2014
卷: 41, 期: 12 起始页码: 4109
结束页码: 4117
语种: 英语
Scopus关键词: Atmospheric chemistry
; Methane
; Orbits
; Organic carbon
; Photolysis
; Atmospheric methanes
; Atmospheric passage
; Dust extinctions
; Laser spectrometers
; Martian atmospheres
; Natural experiment
; Organic carbon contents
; Sample analysis
; Dust
; accretion
; cloud
; dust
; Mars
; Martian atmosphere
英文摘要: On 19 October 2014 comet C/2013 A1 will encounter Mars. The planet is anticipated to pass through the coma resulting in a greater than four order-of-magnitude increase in the accretion of dust with 430 tonnes of dust with diameters between 1 μm and 12.4mm surviving atmospheric passage. At high altitude, the dust would impact temperature and may affect limb dust extinction and cloud formation. The UV photolysis of the organic carbon content of the dust, 1.9 to 4.6 tonnes, would have a negligible effect on atmospheric methane. Should C/2013 A1 brighten, increases in upper atmospheric accretion of coma particles will exceed the background dust and the population of small coma particles may be constrained from orbital measurements. For M1 <-1.3, methane produced might be measurable by the Sample Analysis at Mars Tunable Laser Spectrometer instrument onboard Curiosity. © 2014. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84907920602&doi=10.1002%2f2014GL060610&partnerID=40&md5=6129982050980cff0aad6d4b7a1bff86
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/7284
Appears in Collections: 气候减缓与适应
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作者单位: Centre for Research in Earth and Space Science, York University, Toronto, ON, Canada
Recommended Citation:
Moores J.E.,McConnochie T.H.,Ming D.W.,et al. The Siding Spring cometary encounter with Mars: A natural experiment for the Martian atmosphere?[J]. Geophysical Research Letters,2014-01-01,41(12).