Orateur
Apolline Leclef
(Institut d'Astrophysique Spatiale)
Description
The study of Martian ices provides key information into the formation mechanisms of gullies on Mars. Using infrared spectroscopy data from CRISM (Mars Reconnaissance Orbiter, NASA), this work focuses on seasonal CO2 ice deposits near Mars' poles, with particular attention to Sisyphi Cavi, where active gullies are observed. The properties of CO2 ice are characterized by evaluating its translucent or granular structure, comparing ice thicknesses predicted by a climate model from LMD to optical paths derived from CRISM observations. By assessing these ice properties, the study aims to offer valuable insights into the mechanisms driving gully formation, including CO2 sublimation and the possible role of liquid water.
| Astrophysics Field | Mars, Surface Geological processes, IR spectroscopy, Photometric modelisation, CRISM |
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Author
Apolline Leclef
(Institut d'Astrophysique Spatiale)
Co-auteurs
Mathieu VINCENDON
(Institut d'Astrophysique Spatiale)
Cateline LANTZ
(Institut d'Astrophysique Spatiale)
