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An improvement to the volcano-scan algorithm for atmospheric correction of CRISM and OMEGA spectral data
Seelos, Frank P.; Murchie, Scott L.; Mustard, John F. +12 more
The observations of Mars by the CRISM and OMEGA hyperspectral imaging spectrometers require correction for photometric, atmospheric and thermal effects prior to the interpretation of possible mineralogical features in the spectra. Here, we report on a simple, yet non-trivial, adaptation to the commonly-used volcano-scan correction technique for at…
The Circum-Hellas Volcanic Province, Mars: Overview
McCord, Thomas B.; HRSC Co-Investigator Team; Xiao, Long +13 more
Building on previous studies of volcanoes around the Hellas basin with new studies of imaging (High-Resolution Stereo Camera (HRSC), Thermal Emission Imaging System (THEMIS), Mars Orbiter Camera (MOC), High-Resolution Imaging Science Experiment (HiRISE), Context Imager (CTX)), multispectral (HRSC, Observatoire pour la Minéralogie, l'Eau, les Glace…
The Mars express MARSIS sounder instrument
Gurnett, D.; Orosei, R.; Picardi, G. +16 more
The Mars advanced radar for subsurface and ionospheric sounding (MARSIS) on Mars Express is the first high-frequency sounding radar operating from orbital altitudes since the Apollo 17 Lunar Sounder flown in 1972. The radar operates from a highly elliptical orbit but acquires data only from altitudes lower than 1200 km. The periapsis altitude is 2…
Pingos on Earth and Mars
Burr, Devon M.; Tanaka, Kenneth L.; Yoshikawa, Kenji
Pingos are massive ice-cored mounds that develop through pressurized groundwater flow mechanisms. Pingos and their collapsed forms are found in periglacial and paleoperiglacial terrains on Earth, and have been hypothesized for a wide variety of locations on Mars. This literature review of pingos on Earth and Mars first summarizes the morphology of…
Sedimentary deposits in Xanthe Terra: Implications for the ancient climate on Mars
Jaumann, R.; Scholten, F.; Neukum, G. +7 more
A variety of sedimentary deposits is observed in Xanthe Terra, Mars, including Gilbert-type deltas, fan deltas dominated by resedimentation processes, and alluvial fans. Sediments were provided through deeply incised valleys, which were probably incised by both runoff and groundwater sapping. Mass balances based on High-Resolution Stereo Camera (H…
Automatic detection of sub-km craters in high resolution planetary images
Stepinski, Tomasz F.; Urbach, Erik R.
Impact craters are among the most studied geomorphic planetary features because they yield information about the past geological processes and provide a tool for measuring relative ages of observed geologic formations. Surveying impact craters is an important task which traditionally has been achieved by means of visual inspection of images. The s…
Dayglow on Mars: Kinetic modelling with SPICAM UV limb data
Bertaux, J. -L.; Leblanc, F.; Witasse, O. +2 more
The UV spectrometer experiment SPICAM onboard ESA Mars Express has been orbiting Mars since December 2003. We present here some comparisons between airglow data that have been newly interpreted with the advanced kinetic model Trans-Mars. A series of numerical one-dimensional kinetic models, in the Trans-* family [Lilensten, J., Blelly. P.L., 2002.…
Multi-resolution topographic data extraction from Martian stereo imagery
Muller, J. -P.; Kim, J. R.
The acquisition of high resolution topographic data such as Digital Terrain Models (DTMs) and orthoimages from various Martian stereo imagery is now readily available. The very successful European Space Agency (ESA) Mars Express mission includes the High Resolution Stereo Camera (HRSC) which has provided, since March 2004, an increasingly global s…
Regional differences in gully occurrence on Mars: A comparison between the Hale and Bond craters
Hiesinger, H.; Hauber, E.; Reiss, D. +1 more
The observation of gullies on Mars raised questions about the presence of liquid water in the recent past. In some regions like Hale and Bond crater, gullies occur in one crater (Hale) but do not in another crater nearby (Bond). These regional differences have been interpreted as an argument for a formation of the gullies related to groundwater. T…
Investigation of water signatures at gully-exposed sites on Mars by hyperspectral image analysis
Schulze-Makuch, Dirk; Fan, Chaojun; Xie, Hongjie +1 more
High-resolution images from the Mars Obiter Camera (MOC) onboard the Mars Global Surveyor (MGS) show a variety of gully features on sloped surfaces of Mars. The mechanism of gully formation is still under debate, although a majority of studies tend to favor a mechanism related to liquid water flow based on geomorphology and fluid mechanics conside…