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ESA's Mars Express has successfully completed its nominal mission of one Martian year covering about 25% of the surface in stereo and color with resolutions up to 10 m/pixel by its high-resolution stereo camera (HRSC). Mars Express is now in its extended mission phase, during which much of the remaining part of the Martian surface is envisaged to be covered(More)
[1] Nili Fossae is a region with fresh exposures of old material. OMEGA spectral data have revealed a strong diversity of minerals in the Nili Fossae region, including mafic minerals and phyllosilicates. Phyllosilicates are found to be primarily Fe-rich smectites (a type of clay minerals). These phyllosilicates are observed only on the Noachian crust, in(More)
The Mars Express mission was launched in June 2003 and was inserted into orbit around Mars in December 2003. Its main objective is to study the Mars' subsurface, surface, atmosphere and interaction with the solar wind. A secondary objective is to study the martian moons, in particular the largest one Phobos, thanks to a near polar and elliptical orbit which(More)
[1] In High Resolution Stereo Camera (HRSC) images of the Mars Express Mission a 130 km long interior channel is identified within a 400 km long valley network system located in the Lybia Montes. Ages of the valley floor and the surroundings as derived from crater counts define a period of $350 Myrs during which the valley might have been formed. Based on(More)
Introduction: In the past, reflectance measurements of selected rocks and soils over a wide range of illumination geometries have been obtained by the Viking Lander, Mars Pathfinder and MER multispec-tral imaging facilities and provide local constraints on the interpretations of the physical and mineralogical nature of the Martian surface materials. With(More)
Gold nanoparticles were immobilized on silicon dioxide (SiO2) surfaces by embedding them in a layer of octadecylsiloxane (ODS) and also in SiO2 layers created by deposition and oxidation of ODS layers. The ODS and the SiO2 layers form selectively around the nanoparticles. Analysis of the particles after several deposition/oxidation cycles showed a decrease(More)
Introduction and context: One of the new orbital investigations that can be addressed with the multi-angular HRSC dataset generated with the nadir-looking, stereo and photometric channels, is to derive the photometric characteristics for mapping the variation of the soil/bedrock physical properties of Mars, and to relate them to the spectroscopic and(More)
Introduction: Aeolian processes affect much of the uppermost surface of Mars. Wind will transport pre-eroded material and pile it up into various bedforms. Sub-aerial transport of granular material via saltation and traction typically requires sand-sized particles on Earth and also on Mars [1]. Edgett and Parker (1998) [2] characterized aeolian bedforms(More)
The properties of highly oriented pyrolytic graphite (HOPG) as a substrate for external reflection infrared spectroscopy in the mid-infrared region were investigated. Clean HOPG substrates, physisorbed hydrocarbon multilayers, and chemisorbed monolayers of p-substituted aryl radicals on HOPG were used as samples, and the experimental spectra were compared(More)