Results 61 to 70 of about 27,317 (231)

An ICME impact on the Martian hydrogen corona

Earth and Planetary Physics, 2020
The Martian hydrogen exosphere extends out of the bow shock, forming a "hydrogen corona". The solar wind interacts directly with the hydrogen corona. During an ICME event on 7 March 2015, the SWIA instrument onboard Mars Atmosphere and Volatile Evolution
Qi Xu, XiaoJun Xu, Qing Chang, JiaYing Xu, Jing Wang, YuDong Ye   +5 more
doaj   +1 more source

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
openaire   +1 more source

The Mars system revealed by the Martian Moons eXploration mission

Earth, Planets and Space, 2022
Japan Aerospace Exploration Agency (JAXA) plans a Phobos sample return mission (MMX: Martian Moons eXploration). In this study, we review the related works on the past climate of Mars, its evolution, and the present climate and weather to describe the ...
Kazunori Ogohara, Hiromu Nakagawa, Shohei Aoki, Toru Kouyama, Tomohiro Usui, Naoki Terada, Takeshi Imamura, Franck Montmessin, David Brain, Alain Doressoundiram, Thomas Gautier, Takuya Hara, Yuki Harada, Hitoshi Ikeda, Mizuho Koike, François Leblanc, Ramses Ramirez, Eric Sawyer, Kanako Seki, Aymeric Spiga, Ann Carine Vandaele, Shoichiro Yokota, Antonella Barucci, Shingo Kameda   +23 more
doaj   +1 more source

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
core   +1 more source

Martian Surface and Atmosphere Workshop

Eos, Transactions American Geophysical Union, 1992
The NASA‐sponsored Martian Surface and Atmosphere Through Time Study Project convened its first major meeting at the University of Colorado in Boulder, September 23–25, 1991. The workshop, co‐sponsored by the Lunar and Planetary Institute (LPI) and the Laboratory for Atmospheric and Space Physics at the University of Colorado, brought together an ...
openaire   +1 more source

Long-term variability of CO2 and O in the Mars upper atmosphere from MRO radio science data [PDF]

, 2015
We estimate the annual variability of CO2 and O partial density using approximately 6years of Mars Reconnaissance Orbiter (MRO) radio science data from August 2006 to January 2012, which cover three full Martian years (from the northern hemisphere summer
Fricke, Susan K., Genova, Antonio, Goossens, Sander, Lemoine, Frank G., Mazarico, Erwan, Smith, David E., Zuber, Maria T.   +6 more
core   +1 more source

Baroclinic Wave Transitions in the Martian Atmosphere

Icarus, 1996
Abstract Surface pressure data from the Viking Lander mission and from GCM simulations of the martian atmosphere have been analyzed using singular systems analysis. Very regular oscillations are found with frequencies that are distributed bimodally with peaks corresponding to periods of approximately 2–4 days and 5–7 days, respectively ...
Collins, M, Lewis, SR, Read, P, Hourdin, F   +3 more
openaire   +1 more source

Passive Observation of Martian Atmosphere Using O₂(a¹Δ_g) Airglow Radiation: Forward Simulation and Wind Retrieval

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
The passive monitoring of Martian wind fields is crucial for deciphering the Martian atmosphere. With the 3 strong spectral lines in the 1.27 μm O2(a1Δg) airglow emission band, this article designs the Martian Static Wind Imaging Michelson ...
Zhengyi Chen, Biyun Zhang, Chunmin Zhang
doaj   +1 more source

High-fidelity subsurface thermal model as part of a Martian atmospheric column model [PDF]

Geoscientific Instrumentation, Methods and Data Systems, 2013
As the Martian atmosphere is observed in ever greater detail, more realistic computer models are required to interpret these measurements. Physical exchange processes between the atmosphere's lower boundary and the surface are often simplified.
M. D. Paton, A.-M. Harri, T. Mäkinen, H. Savijärvi   +3 more
doaj   +1 more source

Impact inducted surface heating by planetesimals on early Mars

, 2014
We investigate the influence of impacts of large planetesimals and small planetary embryos on the early Martian surface on the hydrodynamic escape of an early steam atmosphere that is exposed to the high soft X-ray and EUV flux of the young Sun.
Dvorak, R., Erkaev, N. V., Güdel, M., Kislyakova, K. G., Lammer, H., Maindl, T. I., Odert, P., Pilat-Lohinger, E., Schäfer, C., Speith, R.   +9 more
core   +1 more source