Results 41 to 50 of about 26,803 (256)

Evolution of the Martian Atmosphere [PDF]

Icarus, 1994
Carbon dioxide, nitrogen, and the nonradiogenic and radiogenic noble gases are tracked from primordial inventories to their present states in a revised model of atmospheric evolution on Mars. Elemental and isotopic abundances evolve by hydrodynamic escape, impact erosion, outgassing, sputtering, photochemical escape of nitrogen, and carbonate formation
openaire   +2 more sources

Distribution of Dune Landform on Mars

Frontiers in Astronomy and Space Sciences, 2022
Dune landforms are widely distributed on Mars and contain abundant information about the Martian atmosphere and sedimentary environment. At present, the understanding of Martian dunes and their environmental significance still needs to be further ...
Li Chao, Dong Zhibao
doaj   +1 more source

In situ observations of ions and magnetic field around Phobos: the mass spectrum analyzer (MSA) for the Martian Moons eXploration (MMX) mission

Earth, Planets and Space, 2021
The mass spectrum analyzer (MSA) will perform in situ observations of ions and magnetic fields around Phobos as part of the Martian Moons eXploration (MMX) mission to investigate the origin of the Martian moons and physical processes in the Martian ...
Shoichiro Yokota, Naoki Terada, Ayako Matsuoka, Naofumi Murata, Yoshifumi Saito, Dominique Delcourt, Yoshifumi Futaana, Kanako Seki, Micah J. Schaible, Kazushi Asamura, Satoshi Kasahara, Hiromu Nakagawa, Masaki N. Nishino, Reiko Nomura, Kunihiro Keika, Yuki Harada, Shun Imajo   +16 more
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Nucleation studies in the Martian atmosphere [PDF]

Journal of Geophysical Research: Planets, 2005
We developed models for unary nucleation of water and carbon dioxide in the Martian atmosphere. Both homogeneous and heterogeneous nucleation on dust particles were studied. Our models are based on classical theory. We compare results of different adsorption approaches.
Määttänen, Anni, Vehkamäki, Hanna, Lauri, A., Merikallio, S., Kauhanen, J., Savijärvi, H., Kulmala, M.   +6 more
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New insights into martian atmospheric chemistry [PDF]

Icarus, 2014
HOx radicals are produced in the martian atmosphere by the photolysis of water vapor and subsequently participate in catalytic cycles that recycle carbon dioxide (CO2) from its photolysis product carbon monoxide (CO), providing a qualitative explanation for the stability of its atmosphere.
Yuk L. Yung, H. Nair, Mao-Chang Liang, Mao-Chang Liang, Joseph S. Francisco, C. S. Boxe, Run-Lie Shia, Alfonso Saiz-Lopez   +7 more
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Modelling the martian atmosphere [PDF]

Astronomy and Geophysics, 2003
Mars general circulation models, used to study the atmosphere of Mars, have developed almost in parallel with terrestrial weather and climate models. These models are now being confronted with a large amount of new spacecraft data, which is allowing the models to be validated more rigorously. This paper briefly reviews the current state of Mars models,
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Argon in the Martian atmosphere

Geophysical Research Letters, 1974
Heretofore undetected argon may be a significant constituent of the Martian atmosphere with a partial pressure of 1.8 mbar. The addition of argon to the 5.5±0.8 mbar of CO2, deduced from ground‐based spectroscopy, is consistent with the values of total pressure deduced from the Mariner radio occulation measurements. The presence of argon in the Martian
Joel S. Levine, Guenter R. Riegler
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Revisiting the Solar Wind Deceleration Upstream of the Martian Bow Shock Based on MAVEN Observations

The Astrophysical Journal
The solar wind deceleration upstream of the Martian bow shock is examined using particle and magnetic field measurements obtained by the Mars Atmosphere and Volatile EvolutioN (MAVEN).
Yuqi Liu, Kaijun Liu, Ducheng Lu, Hui Huang, Jingyi Zhou, Kun Cheng, Xianming Zheng, Yan Wang, Mengmeng Wang   +8 more
doaj   +1 more source

Martian atmospheric O₃ retrieval development for the NOMAD-UVIS spectrometer [PDF]

, 2017
The composition of atmospheric trace gases and aerosols is a highly variable and poorly constrained component of the martian atmosphere, and by affecting martian climate and UV surface dose, represents a key parameter in the assessment of suitability for
Hathi, B., Hewson, W., Holmes, J., Irwin, P. G. R., Leese, M., Lewis, S. R., Mason, J. P., Patel, M. R.   +7 more
core  

A review of volatiles in the Martian interior [PDF]

, 2016
Multiple observations from missions to Mars have revealed compelling evidence for a volatile-rich Martian crust. A leading theory contends that eruption of basaltic magmas was the ultimate mechanism of transfer of volatiles from the mantle toward the ...
Baratoux, David, Beaty, David, Breuer, Doris, Farcy, Benjamin J., Filiberto, Justin, Grott, Matthias, Jones, John H., Kiefer, Walter S., Mane, Prajkta, McCubbin, Francis M., Schwenzer, Susanne P.   +10 more
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