Results 71 to 80 of about 25,282 (206)

Very high elevation water ice clouds on Mars: Their morphology and temporal behavior [PDF]

Quantitative analysis of Viking images of the martian planetary limb has uncovered the existence and temporal behavior of water ice clouds that form between 50 and 90 km elevation.
Jaquin, Fred
core   +1 more source

D/H ratios of the inner Solar System [PDF]

, 2017
The original hydrogen isotope (D/H) ratios of different planetary bodies may indicate where each body formed in the Solar System. However, geological and atmospheric processes can alter these ratios through time.
Hallis, Lydia
core   +1 more source

Morphology of the Excited Hydroxyl in the Martian Atmosphere: A Model Study—Where to Search for Airglow on Mars?

Remote Sensing
Monitoring excited hydroxyl (OH*) airglow is broadly used for characterizing the state and dynamics of the terrestrial atmosphere. Recently, the existence of excited hydroxyl was confirmed using satellite observations in the Martian atmosphere.
Dmitry S. Shaposhnikov, Mykhaylo Grygalashvyly, Alexander S. Medvedev, Gerd Reinhold Sonnemann, Paul Hartogh   +4 more
doaj   +1 more source

Advective Fluxes in the Martian Regolith as a Mechanism Driving Methane and Other Trace Gas Emissions to the Atmosphere

Geophysical Research Letters, 2020
Advective fluxes influence methane and CO2 soil emissions into the atmosphere on Earth and may drive trace gas emissions in the Mars atmosphere. However, their relevance in the Martian regolith has not been evaluated to date.
D. Viúdez‐Moreiras, R. E. Arvidson, J. Gómez‐Elvira, C. Webster, C. E. Newman, P. Mahaffy, A. R. Vasavada   +6 more
doaj   +1 more source

An investigation of Martian atmospheric trace species using laboratory and computer-based simulation [PDF]

, 2011
The study of trace gas species in the Martian atmosphere has the potential to shed new light on wide-ranging topics such as the search for life and the history of liquid water on the planet.
Duffy, Maria, Lewis, Stephen, Mason, Nigel   +2 more
core  

A First Look at Carbon and Oxygen Stable Isotope Measurements of Martian Atmospheric C02 by the Phoenix Lander [PDF]

, 2009
Precise stable isotope measurements of the CO2 in the martian atmosphere have the potential to provide important constraints for our understanding of the history of volatiles, the carbon cycle, current atmospheric processes, and the degree of water/rock ...
Boynton, W.V., Hamara, D., Hoffman, J.H., Ming, D.W., Niles, P.B.   +4 more
core   +1 more source

An estimation of the mass dragged by the solar wind from Mars’s atmosphere in its geologic history [PDF]

Geofísica Internacional, 2001
In the past Mars had a denser atmosphere, but it lacks a magnetic field to protect the ionosphere and exosphere from the solar wind. A model for describing the loss of atmosphere in geologic time is presented.
Héctor Javier Durand-Manterola
doaj  

Seven-year climatology of dust opacity on Mars [PDF]

, 2012
This paper describes the procedure we have used to produce multi-annual dust scenarios for Martian years 24 to 30 from a multi-instrument dataset of total dust opacity observations.
Forget, F., Lewis, S. R., Millour, E., Montabone, L.   +3 more
core  

Photovoltaic array for Martian surface power [PDF]

Missions to Mars will require electric power. A leading candidate for providing power is solar power produced by photovoltaic arrays. To design such a power system, detailed information on solar-radiation availability on the Martian surface is necessary.
Appelbaum, J., Landis, G. A.
core   +1 more source

The problem of using Mariner IV IONOSPHERIC densities to deduce a model of the Martian atmospheric structure [PDF]

Martian atmosphere model deduced from Mariner IV IONOSPHERE electron density ...
Donahue, T. M.
core   +1 more source