Evidence for enhanced hydration on the northern flank of Olympus Mons, Mars
Bellucci, G. and Helbert, J. and Altieri, F. and Reiss, D. and Bibring, J.P. and van Gasselt, S. and Hoffmann, H. and Langevin, Y. and Neukum, G. and Poulet, F. (2007) Evidence for enhanced hydration on the northern flank of Olympus Mons, Mars. Icarus: International Journal of Solar System Studies, 2, pp. 361-377. Elsevier. DOI: 10.1016/j.icarus.2007.07.019.
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In this paper we report about a small region on the northern scarp of Olympus Mons showing an increase of the 3 μm hydration band in the OMEGA spectra, together with low superficial temperatures. Although water ice clouds can occurs on the flank of big martian volcanoes, radiative transfer modeling indicates that atmospheric water ice alone cannot justify the shape of the observed band. A fit of the 1.9–3 μm absorption features is obtained by hypothesizing that the study region consists of a mixture of dust and water ice covered by an optically thin (τ=0.08 at 3 μm) layer of dust. Thermal modeling also suggests that water ice in this region may be stable during most of the martian year due to the saturation of the atmosphere. If water ice is responsible for the observed spectral behavior, it might consist of a number of ice or snow patches possibly deposited in small depressions.
|Title:||Evidence for enhanced hydration on the northern flank of Olympus Mons, Mars|
|Date:||15 December 2007|
|Journal or Publication Title:||Icarus: International Journal of Solar System Studies|
|In ISI Web of Science:||Yes|
|Page Range:||pp. 361-377|
|Keywords:||Spectroscopy; Mars; Mineralogy; Ices|
|HGF - Research field:||Aeronautics, Space and Transport|
|HGF - Program:||Space|
|HGF - Program Themes:||W EW - Erforschung des Weltraums|
|DLR - Research area:||Space|
|DLR - Program:||W EW - Erforschung des Weltraums|
|DLR - Research theme (Project):||W - Projekt MARS-EXPRESS / HRSC (old)|
|Institutes and Institutions:||Institute of Planetary Research > Planetary Physics|
|Deposited By:||Stefanie Hempel|
|Deposited On:||15 Jan 2008|
|Last Modified:||27 Apr 2009 14:36|
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