DOI: 10.1002/2015GL065280
论文题名: Dayside electron temperature and density profiles at Mars: First results from the MAVEN Langmuir probe and waves instrument
作者: Ergun R.E. ; Morooka M.W. ; Andersson L.A. ; Fowler C.M. ; Delory G.T. ; Andrews D.J. ; Eriksson A.I. ; McEnulty T. ; Jakosky B.M.
刊名: Geophysical Research Letters
ISSN: 0094-8514
EISSN: 1944-8245
出版年: 2015
卷: 42, 期: 21 起始页码: 8846
结束页码: 8853
语种: 英语
英文关键词: density
; ionosphere
; Mars
; temperature
Scopus关键词: Atmospheric temperature
; Density (specific gravity)
; Ionosphere
; Ionospheric measurement
; Langmuir probes
; Probes
; Temperature
; Altitude profiles
; Atmospheric escape
; Chapman functions
; In-situ measurement
; Mars
; Probe instruments
; Solar zenith angle
; Volatile evolution
; Electron temperature
; altitude
; diurnal variation
; electron density
; in situ measurement
; ionosphere
; Mars
; orbit determination
; spacecraft
; temperature profile
; zenith angle
英文摘要: We present Mars' electron temperature (Te) and density (ne) altitude profiles derived from the MAVEN (Mars Atmosphere and Volatile EvolutioN) mission deep dip orbits in April 2015, as measured by the Langmuir probe instrument. These orbits had periapsides below 130 km in altitude at low solar zenith angles. The periapsides were above the peak in ne during this period. Using a Chapman function fit, we find that scale height and projected altitude of the ne peak are consistent with models and previous measurements. The peak electron density is slightly higher than earlier works. For the first time, we present in situ measurements of Te altitude profiles in Mars' dayside in the altitude range from ~130 km to 500 km and provide a functional fit. Importantly, Te rises rapidly with altitude from ~180 km to ~300 km. These results and functional fit are important for modeling Mars' ionosphere and understanding atmospheric escape. © 2015. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84955185765&doi=10.1002%2f2015GL065280&partnerID=40&md5=a70266e86595fc4b3bc05d830e0eb96b
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/8130
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: Department of Astrophysical and Planetary Sciences, University of Colorado Boulder, Boulder, CO, United States
Recommended Citation:
Ergun R.E.,Morooka M.W.,Andersson L.A.,et al. Dayside electron temperature and density profiles at Mars: First results from the MAVEN Langmuir probe and waves instrument[J]. Geophysical Research Letters,2015-01-01,42(21).