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Fractionated martian atmosphere in the nakhlites?
Meteoritics, 1994Abstract— 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.
M J, Drake +3 more
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Photochemistry of the Martian Atmosphere
1986A problem and ways to solve it. Consider a problem of the calculation of ionospheric composition with the neutral upper atmospheric composition being known.
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A discussion of Martian atmospheric dynamics
Planetary and Space Science, 1967Abstract We have computed radiative relaxation times for temperature perturbations in CO 2 with small admixtures of water vapor under conditions which are similar to those occurring in the martian atmosphere. Certain aspects of the influence of radiative transfer on dynamical phenomena in the martian atmosphere are discussed in terms of these ...
Richard Goody, Michael J.S. Belton
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Physical parameters of the martian atmosphere
Earth, Moon, and Planets, 1989The 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.
Basil Petropoulos, Constantin Macris
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The Martian Atmosphere as a Meteoroid Detector
Icarus, 1996Abstract We investigate the plausibility of detecting meteors from the surface of Mars. We estimate the flux of high-speed photographic meteoroids at the orbit of Mars to be ∼50% that at Earth. Because the atmospheric densities of the Earth and Mars are comparable at a height of 120 km, close to where meteor ablation occurs on Earth, we also expect ...
Lars G. Adolfsson +2 more
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Change in the Martian Atmosphere
1999There are several lines of evidence that the atmosphere of Mars has significantly evolved over the history of the planet. Because Mars does not have a strong intrinsic magnetic field, the atmosphere is eroded by interactions with the solar wind. Conditions in the early solar-system significantly enhanced this loss, notably the component due to solar ...
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Electron reflectometry in the martian atmosphere
Icarus, 2008The technique of electron reflectometry, a method for remote estimation of planetary magnetic fields, is expanded from its original use of mapping crustal magnetic fields at the Moon to achieving the same purpose at Mars, where the presence of a substantial atmosphere complicates matters considerably. The motion of solar wind electrons, incident on the
Robert J. Lillis +3 more
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Is there a Martian atmospheric electric circuit?
Journal of Geophysical Research: Planets, 2001Laboratory, analytical, and simulation studies suggest that Martian dust clouds can become significantly charged via dust/dust contact electrification. If moderate‐size dust clouds on Mars are like their terrestrial counterparts, they are expected to have the capacity to create electric fields in excess of 1 kV/m.
W. M. Farrell, M. D. Desch
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Experimental and numerical investigation on Martian atmosphere entry
39th Aerospace Sciences Meeting and Exhibit, 2001A numerical and experimental investigation was performed to study the aerothermodynamic problems of entry into the Martian atmosphere. The mathematical and physical model used to study the flowfield around a capsule entering a CO 2 environment is described. Computational fluid dynamics tools have been applied to solve the system of governing equations.
PATERNA D. +3 more
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Spacecraft Observations of the Martian Atmosphere
Annual Review of Earth and Planetary Sciences, 2008Recent spacecraft observations of the Martian atmosphere show that the current climate has a distinct and generally repeatable pattern of seasonal and spatial variations. The half of the year that Mars is closest to the Sun is characterized by warm, dusty conditions, whereas the opposite season is relatively cool, free of dust, and dominated by a low ...
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