DOI: 10.1002/2015GL064159
论文题名: Metallic ions in the upper atmosphere of Mars from the passage of comet C/2013 A1 (Siding Spring)
作者: Benna M. ; Mahaffy P.R. ; Grebowsky J.M. ; Plane J.M.C. ; Yelle R.V. ; Jakosky B.M.
刊名: Geophysical Research Letters
ISSN: 0094-8677
EISSN: 1944-8408
出版年: 2015
卷: 42, 期: 12 起始页码: 4670
结束页码: 4675
语种: 英语
英文关键词: atmosphere
; Comet Siding Spring
; Mars
; metal ion
Scopus关键词: Ablation
; Copper
; Dust
; Earth atmosphere
; Manganese
; Metal ions
; Meteorites
; Upper atmosphere
; Abundance ratios
; Carbonaceous chondrites
; Dust composition
; In-situ detections
; Ion mass spectrometer
; Mars
; Temporal profile
; Volatile evolution
; Metals
; altitude
; carbonaceous chondrite
; comet
; detection method
; interplanetary dust
; ionic composition
; Martian atmosphere
; metal
; upper atmosphere
英文摘要: We report the first in situ detection of metal ions in the upper atmosphere of Mars resulting from the ablation of dust particles from comet Siding Spring. This detection was carried out by the Neutral Gas and Ion Mass Spectrometer on board the Mars Atmosphere and Volatile Evolution Mission. Metal ions of Na, Mg, Al, K, Ti, Cr, Mn, Fe, Co, Ni, Cu, and Zn, and possibly of Si, and Ca, were identified in the ion spectra collected at altitudes of ∼185 km. The measurements revealed that Na+ was the most abundant species, and that the remaining metals were depleted with respect to the CI (type 1 carbonaceous Chondrites) abundance of Na+. The temporal profile and abundance ratios of these metal ions suggest that the combined effects of dust composition, partial ablation, differential upward transport, and differences in the rates of formation and removal of these metal ions are responsible for the observed depletion. © 2015. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84945228940&doi=10.1002%2f2015GL064159&partnerID=40&md5=9f6378882cdf1811018a589039a5fd7c
Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/8293
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: NASA Goddard Space Flight Center, Greenbelt, MD, United States
Recommended Citation:
Benna M.,Mahaffy P.R.,Grebowsky J.M.,et al. Metallic ions in the upper atmosphere of Mars from the passage of comet C/2013 A1 (Siding Spring)[J]. Geophysical Research Letters,2015-01-01,42(12).