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Les surfaces planétaires à la lorgnette des cratères d’impact


Campus Paris-Rive-Gauche


Séminaires Planétologie et Sciences Spatiales

Bâtiment Lamarck A_7ème étage_salle de réunion

Cathy Quantin-Nataf

Université Lyon I

Impact craters are useful tools to study planetary surfaces. First, they are natural drills into planetary crusts. I will present a combination of studies of the martian crust by the analyses of the composition of central peaks of martian impact craters. These results are part of an ERC project eMars dedicated to the geological evolution of Mars. These results have used a martian data processing facility developed in Lyon which allows the tele-processing of imagery data, topographic data and hypespectral data from the 4 last martian orbiters dedicated to the surface of Mars. Secondly, impact crater statistics are key data to decipher the bombardment history of the inner solar system. I will present results on the recent martian and lunar impact rate.