Results 271 to 280 of about 722,187 (326)

Absorption of sound in the Martian atmosphere

The Journal of the Acoustical Society of America, 2001
Future missions to the planet Mars might include microphones to listen for sounds in the tenuous Martian atmosphere. The chemical composition of the atmosphere is well established by previous missions and ground based observations. The dominant constituent is CO2 with a minor amount of N2 and Argon and smaller amounts of H2O.
James P. Chambers, Henry E. Bass
openaire   +2 more sources

Fractionated martian atmosphere in the nakhlites?

Meteoritics, 1994
Abstract— Considerable evidence points to a martian origin of the SNC meteorites. Noble gas isotopic compositions have been measured in most SNC meteorites. The 129Xe/132Xe vs. 84Kr/132Xe ratios in Chassigny, most shergottites, and lithology C of EETA 79001 define a linear array.
Donald S. Musselwhite, Tobias Owen, Michael J. Drake, Timothy D. Swindle   +3 more
openaire   +3 more sources

Buildup with Bremsstrahlung in the Martian Atmosphere

Nuclear Science and Engineering, 2020
Photon buildup is a function of energy, medium, and geometry and therefore must be specifically calculated for the case of interest.
Praneel P. Gulabrao, Kevin T. Clarno
openaire   +2 more sources

Atmospheric Tides at High Latitudes in the Martian Upper Atmosphere Observed by MAVEN and MRO

Journal of Geophysical Research: Space Physics, 2019
Global‐scale waves have been seen throughout the Martian atmosphere and can achieve significant amplitude at higher altitudes. Previous observations of the upper atmosphere have also revealed wavenumber‐3 signatures with significant amplitudes that have ...
S. England, Guiping Liu, Aishwarya Kumar, P. Mahaffy, M. Elrod, M. Benna, S. Jain, J. Deighan, N. Schneider, W. McClintock, J. Evans   +10 more
semanticscholar   +1 more source

Physical parameters of the martian atmosphere

Earth, Moon, and Planets, 1989
The following physical parameters have been computed from 0 to 200 km altitude; (1) pressure, (2) density (3), speed of sound, (4) density, (5) number density, (6) mean free path, (7) viscosity, (8) pressure scale, (9) mean particle velocity, (10) collisional frequency and (11) columnar mass.
Constantin Macris, B. Petropoulos
openaire   +2 more sources

The vertical structure of CO in the Martian atmosphere from the ExoMars Trace Gas Orbiter

Nature Geoscience, 2021
K. Olsen, F. Lefèvre, F. Montmessin, A. Fedorova, A. Trokhimovskiy, L. Baggio, O. Korablev, J. Alday, C. Wilson, F. Forget, D. Belyaev, A. Patrakeev, A. Grigoriev, A. Shakun   +13 more
semanticscholar   +1 more source

Photochemistry of the Martian Atmosphere

1986
A problem and ways to solve it. Consider a problem of the calculation of ionospheric composition with the neutral upper atmospheric composition being known.
openaire   +2 more sources

Low palaeopressure of the martian atmosphere estimated from the size distribution of ancient craters

, 2013
The decay of the martian atmosphere—which is dominated by carbon dioxide—is a component of the long-term environmental change on Mars from a climate that once allowed rivers to flow to the cold and dry conditions of today.
E. Kite, Jean‐Pierre Williams, A. Lucas, O. Aharonson   +3 more
semanticscholar   +1 more source

Compact echelle spectrometer for occultation sounding of the Martian atmosphere: design and performance.

Applied Optics, 2013
The echelle spectrometer TIMM-2 is the instrument developed for the unsuccessful Russian mission Phobos-Grunt. The instrument was dedicated to solar occultation studies of the Martian atmosphere by measuring the amount of methane, by sensitive measuring ...
O. Korablev, F. Montmessin, A. Trokhimovsky, A. Fedorova, A. Kiselev, J. Bertaux, Jean-Pierre Goultail, D. Belyaev, A. Stepanov, A. Titov, Y. K. Kalinnikov   +10 more
semanticscholar   +1 more source

Coupling and interactions across the Martian whole atmosphere system

Nature Geoscience, 2023
Erdal Yiğit
semanticscholar   +1 more source