DOI: 10.1002/2015GL065241
论文题名: Ionospheric plasma density variations observed at Mars by MAVEN/LPW
作者: Andrews D.J. ; Andersson L. ; Delory G.T. ; Ergun R.E. ; Eriksson A.I. ; Fowler C.M. ; McEnulty T. ; Morooka M.W. ; Weber T. ; Jakosky B.M.
刊名: Geophysical Research Letters
ISSN: 0094-8475
EISSN: 1944-8206
出版年: 2015
卷: 42, 期: 21 起始页码: 8862
结束页码: 8869
语种: 英语
英文关键词: Crustal fields
; Density
; Ionosphere
; Mars
; MAVEN
; Plasma
Scopus关键词: Density (specific gravity)
; Ionosphere
; NASA
; Orbits
; Plasmas
; Space flight
; Crustal fields
; Crustal magnetic fields
; Density variations
; Ionospheric plasmas
; Mars
; MAVEN
; Remote measurement
; Volatile evolution
; Plasma density
; altitude
; crustal structure
; electron density
; instrumentation
; ionosphere
; magnetic field
; observational method
; photochemistry
; plasma
; spacecraft
英文摘要: We report on initial observations made by the Langmuir Probe and Waves relaxation soundingexperiment on board the NASA Mars Atmosphere and Volatile EvolutioN (MAVEN) mission. These measurements yield the ionospheric thermal plasma density, and we use these data here for an initial survey of its variability. Studying orbit-to-orbit variations, we show that the relative variability of the ionospheric plasma density is lowest at low altitudes near the photochemical peak, steadily increases toward higher altitudes and sharply increases as the spacecraft crosses the terminator and moves into the nightside. Finally, despite the small volume of data currently available, we show that a clear signature of the influence of crustal magnetic fields on the thermal plasma density fluctuations is visible. Such results are consistent with previously reported remote measurements made at higher altitudes, but crucially, here we sample a new span of altitudes between ∼130 and ∼300 km using in situ techniques. © 2015. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84955201512&doi=10.1002%2f2015GL065241&partnerID=40&md5=166c6a37e85036274cbf98e383586d07
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/8091
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: Swedish Institute of Space Physics (Uppsala), Uppsala, Sweden
Recommended Citation:
Andrews D.J.,Andersson L.,Delory G.T.,et al. Ionospheric plasma density variations observed at Mars by MAVEN/LPW[J]. Geophysical Research Letters,2015-01-01,42(21).