Search Publications
A CaSSIS and HiRISE map of the Clay-bearing Unit at the ExoMars 2022 landing site in Oxia Planum
Quantin-Nataf, Cathy; Pajola, Maurizio; Cremonese, Gabriele +8 more
In preparation for the operations of the ExoMars Rosalind Franklin rover, characterising its landing site in Oxia Planum is essential. Of particular interest is the extensive Clay-bearing Unit present at the site, a key target in the search for biosignatures. In this paper we provide a map based on variations in colour and spectral information wit…
Automated Crater detection from Co-registered optical images, elevation maps and slope maps using deep learning
Tewari, Atal; Verma, Vinay; Srivastava, Pradeep +2 more
Craters are topographic structures resulting from impactors striking the surface of planetary bodies. This paper proposes a novel way of simultaneously utilizing optical images, digital elevation maps (DEMs), and slope maps for automatic crater detection on the lunar surface. The proposed system utilizes Mask R-CNN by tuning it for the crater dete…
Prospects for mapping temporal height variations of the seasonal CO2 snow/ice caps at the Martian poles by co-registration of MOLA profiles
Oberst, Jürgen; Schmidt, Frédéric; Steinbrügge, Gregor +3 more
We investigate the feasibility and demonstrate the merits of using Mars Orbiter Laser Altimeter (MOLA) profiles to retrieve seasonal height variations of CO2 snow/ice cap in Mars' polar areas by applying a co-registration strategy. We present a prototype analysis on the research region of [85.75°S, 86.25°S, 300°E, 330°E] that is located…
Geology, in-situ resource-identification and engineering analysis of the Vernal crater area (Arabia Terra): A suitable Mars human landing site candidate
Pajola, M.; Cremonese, G.; Thomas, N. +15 more
A multidisciplinary study of an ancient area of Mars (Early to Late Noachian) located in Arabia Terra is presented, centred at 6°1′N, 354°54′ E and including the 55 km size Vernal crater. By means of different spatial scale imagery datasets and digital terrain models (MOLA, THEMIS, HRSC, CTX, CaSSIS and HiRISE), we prepare a high-resolution geolog…
Digital elevation model workflow improvements for the MarsSI platform and resulting orthorectified mosaic of Oxia Planum, the landing site of the ExoMars 2022 rover
Quantin-Nataf, Cathy; Volat, Matthieu; Dehecq, Amaury
In this publication, we explore the options to improve the quality and speed of DEM generation procedures from stereo-photogrammetry pipeline of the MarsSI online service. We study available algorithms, options and workflows. Taking inspiration on earth-based work, we propose a new workflow relying on the semi-global matching algorithms and a two …
Morphological analyses of small and medium size landforms in Scandia Cavi and Olympia Undae, Northern circumpolar region of mars
Kereszturi, Akos; Martin, Patrick; Sánchez-Bayton, Marina +3 more
This article presents a systematic morphological analysis of the topographic landforms at Olympia Undae and Scandia Cavi in the northern circumpolar region of Mars. The study has been performed using images from Mars Express and Mars Reconnaissance Orbiter, as well as topographic profiles from Mars Global Surveyor of 200 small and medium-size geol…
Pre-landslide topographic reconstruction in Baetis Chaos, mars using a CaSSIS Digital Elevation Model
Mangold, N.; Pajola, M.; Cremonese, G. +8 more
Planview detailed morphological analysis of martian landslides is usually performed using orbital imagery such as from the ConTeXt camera (CTX) at 6 m/pix, the Colour and Stereo Surface Imaging System (CaSSIS) at 4.5 m/pix or the High-Resolution Imaging Science Experiment (HiRISE) at 0.25-0.5 m/pix. However, topographic information is key to fully…
Impact of dust loading on ozone, winds and heating rates in the atmosphere of mars: Seasonal variability, climatology and SPICAM observations
Haider, S. A.; Masoom, J.; Siddhi, Y. S. +2 more
We have used SPICAM-UV nadir observations for four Martian Years (MY27-MY30) to study the seasonal variability of column abundances of ozone and dust opacity at low latitudes (10°-30°), mid-latitudes (30°-50°) and high latitudes (50°-70°) in both hemispheres. The observed column abundances of ozone are compared with the Mars Climate Database (MCD,…
Morphological and hydrological analysis of volcanic flank valleys - Evidence for a volcanic origin
Bahia, Rickbir S.
Valley networks incising the flanks of Martian volcanoes are potential evidence of geologically recent fluvial activity, either via geothermal heating of snowmelt and groundwater upwelling [Gulick and Baker, 1989, 1990; Gulick et al., 1997; Gulick, 2001; Hynek et al., 2010], or summit snowpack melt [Fassett and Head, 2006, 2007]; however, their or…
Patterns of martian glacial deformation: Implications for glacio-geology, internal structure, and regional climate
Conway, Susan J.; Becerra, Patricio; Grau Galofre, Anna +2 more
Viscous Flow Features (VFF) are widespread in the martian mid-latitudes and indicative of near-surface ice deposits. Their distribution and morphology hint at the regional history of ice deposition and ablation, as well as changes in surface temperature. Here we interrogate the deformation history of a type of VFF, a Lobate Debris Apron (LDA), loc…