scholarly journals Oblique reflections in the Mars Express MARSIS data set: Stable density structures in the Martian ionosphere

2014 ◽  
Vol 119 (5) ◽  
pp. 3944-3960 ◽  
Author(s):  
D. J. Andrews ◽  
M. André ◽  
H. J Opgenoorth ◽  
N. J. T. Edberg ◽  
C. Diéval ◽  
...  
Keyword(s):  
Data Set ◽  
Mars Express ◽  
Martian Ionosphere

scholarly journals Retrieval of ionospheric profiles from the Mars Express MARSIS experiment data and comparison with radio-occultation data

2012 ◽  
Vol 2 (1) ◽  
pp. 87-106
Author(s):  
B. Sánchez-Cano ◽  
O. Witasse ◽  
M. Herraiz ◽  
S. M. Radicella ◽  
J. Bauer ◽  
...  
Keyword(s):  
Radio Occultation ◽  
European Space Agency ◽  
Planetary Science ◽  
Data Set ◽  
Mars Express ◽  
Radio Science ◽  
Space Agency ◽  
Martian Ionosphere ◽  
Occultation Data ◽  
Ionospheric Sounding

Abstract. Since 2005 the Mars Advanced Radar and Ionospheric Sounding experiment (MARSIS) aboard Mars Express has acquired a unique data set on the ionosphere of Mars made up of ionospheric soundings taken by the instrument working in its Active Ionospheric Sounding (AIS) mode. These soundings play a role similar to those of modern Terrestrial digisondes in the analysis of our planet ionosphere and have allowed us to dramatically improve our knowledge about the Martian ionosphere. This paper describes this kind of data, which are available from the public Planetary Science Archive, and introduces the MAISDAT tool developed by the European Space Agency to analyze and derive the vertical profile of electron density. Comparisons with radio-occultation profiles obtained from Mars Express Radio Science instrument are performed to validate the procedure used in this study.

A Sporadic Third Layer in the Ionosphere of Mars

Science ◽  
2005 ◽  
Vol 310 (5749) ◽  
pp. 837-839 ◽  
Author(s):  
M. Pätzold ◽  
S. Tellmann ◽  
B. Häusler ◽  
D. Hinson ◽  
R. Schaa ◽  
...  
Keyword(s):  
Electron Density ◽  
Charge Exchange ◽  
Layer Structure ◽  
Electron Densities ◽  
Ionospheric Layer ◽  
Density Profiles ◽  
Mars Express ◽  
Radio Science ◽  
Martian Ionosphere ◽  
Electron Density Profiles

The daytime martian ionosphere has been observed as a two-layer structure with electron densities that peak at altitudes between about 110 and 130 kilometers. The Mars Express Orbiter Radio Science Experiment on the European Mars Express spacecraft observed, in 10 out of 120 electron density profiles, a third ionospheric layer at altitude ranges of 65 to 110 kilometers, where electron densities, on average, peaked at 0.8 × 1010 per cubic meter. Such a layer has been predicted to be permanent and continuous. Its origin has been attributed to ablation of meteors and charge exchange of magnesium and iron. Our observations imply that this layer is present sporadically and locally.

scholarly journals The Analysis of the Topside Additional Layer of Martian Ionosphere Using MARSIS/Mars Express Data

2012 ◽  
Vol 29 (4) ◽  
pp. 337-342 ◽  
Author(s):  
Eojin Kim ◽  
Haingja Seo ◽  
Joo Hyeon Kim ◽  
Joo Hee Lee ◽  
Yong Ha Kim ◽  
...  
Keyword(s):  
Mars Express ◽  
Additional Layer ◽  
Martian Ionosphere

scholarly journals Rosetta and Mars Express observations of the influence of high solar wind pressure on the Martian plasma environment

2009 ◽  
Vol 27 (12) ◽  
pp. 4533-4545 ◽  
Author(s):  
N. J. T. Edberg ◽  
U. Auster ◽  
S. Barabash ◽  
A. Bößwetter ◽  
D. A. Brain ◽  
...  
Keyword(s):  
Magnetic Field ◽  
High Pressure ◽  
Solar Wind ◽  
Pressure Pulse ◽  
Wind Pressure ◽  
Data Set ◽  
Mars Express ◽  
Boundary Crossings ◽  
Plasma Environment ◽  
Solar Wind Pressure

Abstract. We report on new simultaneous in-situ observations at Mars from Rosetta and Mars Express (MEX) on how the Martian plasma environment is affected by high pressure solar wind. A significant sharp increase in solar wind density, magnetic field strength and turbulence followed by a gradual increase in solar wind velocity is observed during ~24 h in the combined data set from both spacecraft after Rosetta's closest approach to Mars on 25 February 2007. The bow shock and magnetic pileup boundary are coincidently observed by MEX to become asymmetric in their shapes. The fortunate orbit of MEX at this time allows a study of the inbound boundary crossings on one side of the planet and the outbound crossings on almost the opposite side, both very close to the terminator plane. The solar wind and interplanetary magnetic field (IMF) downstream of Mars are monitored through simultaneous measurements provided by Rosetta. Possible explanations for the asymmetries are discussed, such as crustal magnetic fields and IMF direction. In the same interval, during the high solar wind pressure pulse, MEX observations show an increased amount of escaping planetary ions from the polar region of Mars. We link the high pressure solar wind with the observed simultaneous ion outflow and discuss how the pressure pulse could also be associated with the observed boundary shape asymmetry.

scholarly journals Statistical properties of planetary heavy-ion precipitations toward the Martian ionosphere obtained from Mars Express

2013 ◽  
Vol 118 (8) ◽  
pp. 5348-5357 ◽  
Author(s):  
Takuya Hara ◽  
Kanako Seki ◽  
Yoshifumi Futaana ◽  
Masatoshi Yamauchi ◽  
Stas Barabash ◽  
...  
Keyword(s):  
Heavy Ion ◽  
Statistical Properties ◽  
Mars Express ◽  
Martian Ionosphere

Large density fluctuations in the martian ionosphere as observed by the Mars Express radar sounder

Icarus ◽  
2010 ◽  
Vol 206 (1) ◽  
pp. 83-94 ◽  
Author(s):  
D.A. Gurnett ◽  
D.D. Morgan ◽  
F. Duru ◽  
F. Akalin ◽  
J.D. Winningham ◽  
...  
Keyword(s):  
Density Fluctuations ◽  
Mars Express ◽  
Large Density ◽  
Martian Ionosphere ◽  
Radar Sounder

Martian ionosphere observed by Mars Express. 2. Influence of solar irradiance on upper ionosphere and escape fluxes

2017 ◽  
Vol 145 ◽  
pp. 1-8 ◽  
Author(s):  
E. Dubinin ◽  
M. Fraenz ◽  
M. Pätzold ◽  
D. Andrews ◽  
O. Vaisberg ◽  
...  
Keyword(s):  
Solar Irradiance ◽  
Mars Express ◽  
Martian Ionosphere ◽  
Upper Ionosphere

scholarly journals Effects of a strong ICME on the Martian ionosphere as detected by Mars Express and Mars Odyssey

2014 ◽  
Vol 119 (7) ◽  
pp. 5891-5908 ◽  
Author(s):  
D. D. Morgan ◽  
C. Diéval ◽  
D. A. Gurnett ◽  
F. Duru ◽  
E. M. Dubinin ◽  
...  
Keyword(s):  
Mars Express ◽  
Martian Ionosphere ◽  
Mars Odyssey

An overview of radar soundings of the martian ionosphere from the Mars Express spacecraft

2008 ◽  
Vol 41 (9) ◽  
pp. 1335-1346 ◽  
Author(s):  
D.A. Gurnett ◽  
R.L. Huff ◽  
D.D. Morgan ◽  
A.M. Persoon ◽  
T.F. Averkamp ◽  
...  
Keyword(s):  
Mars Express ◽  
Martian Ionosphere
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