Results 181 to 190 of about 604,790 (209)

Electron reflectometry in the martian atmosphere

Icarus, 2008
The 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, David L. Mitchell, Robert P. Lin, Mario H. Acuña   +3 more
openaire   +1 more source

Change in the Martian Atmosphere

1999
There 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 ...
openaire   +1 more source

Is there a Martian atmospheric electric circuit?

Journal of Geophysical Research: Planets, 2001
Laboratory, 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
openaire   +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.
Basil Petropoulos, Constantin Macris
openaire   +1 more source

Experimental and numerical investigation on Martian atmosphere entry

39th Aerospace Sciences Meeting and Exhibit, 2001
A 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., MONTI R., SAVINO, RAFFAELE, ESPOSITO A.   +3 more
openaire   +2 more sources

Spacecraft Observations of the Martian Atmosphere

Annual Review of Earth and Planetary Sciences, 2008
Recent 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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A new look to the Martian atmosphere

Proceedings of the Royal Society of London. A. Mathematical and Physical Sciences, 1974
Abstract Although the Martian atmosphere is at present only about 1% as dense as the Earth’s atmosphere it has been revealed as a dramatically active environment by the observations made during 1971-72 by the Mariner 9 and Soviet Mars 2 and 3 spacecrafts which arrived at the planet during a major global dust storm.
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Effect of Martian Atmosphere on Aerodynamic Performance of Supersonic Parachute Two-Body Systems

Chinese Journal of Aeronautics, 2022
Chih-Yung Wen, He Jia, Wei Rong
exaly  

Comparison of the Effects of Regional and Global Dust Storms on the Composition of the Ionized Species of the Martian Upper Atmosphere Using MAVEN

Remote Sensing, 2022
Maher A Dayeh, Ashraf Farahat, Majd Mayyasi   +2 more
exaly  

Martian Dust Storms and Gravity Waves: Disentangling Water Transport to the Upper Atmosphere

Journal of Geophysical Research E: Planets, 2022
Erdal Yiğit, Dmitry S Shaposhnikov, Alexander V Rodin   +2 more
exaly