globalchange  > 科学计划与规划
DOI: 10.1002/2015GL065267
论文题名:
The first in situ electron temperature and density measurements of the Martian nightside ionosphere
作者: Fowler C.M.; Andersson L.; Ergun R.E.; Morooka M.; Delory G.; Andrews D.J.; Lillis R.J.; McEnulty T.; Weber T.D.; Chamandy T.M.; Eriksson A.I.; Mitchell D.L.; Mazelle C.; Jakosky B.M.
刊名: Geophysical Research Letters
ISSN: 0094-8439
EISSN: 1944-8170
出版年: 2015
卷: 42, 期:21
起始页码: 8854
结束页码: 8861
语种: 英语
英文关键词: density ; ionosphere ; Mars ; nightside ; temperature
Scopus关键词: Density (specific gravity) ; Electron temperature ; Ionosphere ; Ionospheric measurement ; Temperature ; Highest temperature ; Mars ; Mars atmosphere ; Nightside ; One-dimensional model ; Temperature profiles ; Vertical density profiles ; Volatile evolution ; Atmospheric temperature ; altitude ; electron density ; in situ measurement ; instrumentation ; ionosphere ; Martian atmosphere ; observational method ; spacecraft ; temperature gradient ; temperature profile ; temporal variation
英文摘要: The first in situ nightside electron density and temperature profiles at Mars are presented as functions of altitude and local time (LT) from the Langmuir Probe and Waves (LPW) instrument on board the Mars Atmosphere and Volatile EvolutioN (MAVEN) mission spacecraft. LPW is able to measure densities as low as ∼100 cm-3, a factor of up to 10 or greater improvement over previous measurements. Above 200 km, near-vertical density profiles of a few hundred cubic centimeters were observed for almost all nightside LT, with the lowest densities and highest temperatures observed postmidnight. Density peaks of a few thousand cubic centimeters were observed below 200 km at all nightside LT. The lowest temperatures were observed below 180 km and approach the neutral atmospheric temperature. One-dimensional modeling demonstrates that precipitating electrons were able to sustain the observed nightside ionospheric densities below 200 km. © 2015. American Geophysical Union. All Rights Reserved.
URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84955195578&doi=10.1002%2f2015GL065267&partnerID=40&md5=9977c6ee7b04565478fc2a8633d80516
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/8055
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: Laboratory of Atmospheric and Space Sciences, University of Colorado Boulder, Boulder, CO, United States

Recommended Citation:
Fowler C.M.,Andersson L.,Ergun R.E.,et al. The first in situ electron temperature and density measurements of the Martian nightside ionosphere[J]. Geophysical Research Letters,2015-01-01,42(21).
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