منابع مشابه
OMEGA/Mars Express: South Pole Region, water vapor daily variability
R. Melchiorri, P. Drossart , T. Fouchet, T. Encrenaz, F. Forget, D. Titov, L. Maltagliati, F. Altieri, M. Vincendon, Y. Langevin and J.P. Bibring, , ORAU/NASA Ames Research Center, MS 245-3, Moffett Field, CA, USA ([email protected]); 2 LESIA, Observatoire de Paris section de Meudon, FRANCE; 3 Laboratoire de Métheorologie dynamique, Paris FRANCE; 4 Max Planck Institut for Solar Sys...
متن کاملSeasonal variations of hydrogen peroxide and water vapor on Mars: Further indications of heterogeneous chemistry
We have completed our seasonal monitoring of hydrogen peroxide and water vapor on Mars using ground-based thermal imaging spectroscopy, by observing the planet in March 2014, when water vapor is maximum, and July 2014, when, according to photochemical models, hydrogen peroxide is expected to be maximum. Data have been obtained with the Texas Echelon Cross Echelle Spectrograph (TEXES) mounted at...
متن کاملWater on Mars and Venus
This paper reviews evidence relating to the abundance of water on early Mars and Venus from measurements of the present abundance of hydrogen compounds, deuterium to hydrogen (D/H) ratios and escape fluxes. For Mars, recent measurements of D/H ratios in SNC hydrous minerals provide data on the ratios at earlier times to augment present atmospheric values. Interpretation of these data shows that...
متن کاملWater vapor map of Mars near summer solstice using ground-based infrared spectroscopy
Ground-based spatial mapping of Mars provides a unique way to retrieve the global distribution of minor atmospheric species and to study transient phenomena or possible variations with the local hour. We have obtained an instantaneous map of water vapor on Mars near summer solstice (Ls = 80◦) using the Texas Echelon Cross Echelle Spectrograph (TEXES) at the NASA Infrared Telescope Facility (IRT...
متن کاملInterannual Comparison of Water Vapor in the North Polar Region of Mars
The development of the south polar Chasma Australe re-entrant has been discussed for several years and a variety of theories including eolian, aquatic, subglacial and tectonic mechanisms have been proposed for its formation. Morphological observations and studies of recent imagery support the idea of successive headward erosion and removal of volatile–rich sub–surface material combined with col...
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ژورنال
عنوان ژورنال: Scientific American
سال: 1910
ISSN: 0036-8733
DOI: 10.1038/scientificamerican04231910-267asupp