Combined use of ExoMars2022 Rover Drill telemetry and the data from ADRON, CLUPI, Ma_MISS and WISDOM instruments for a full characterization of Oxia Planum shallow subsurface environment

International audienceDue to the thin Martian atmosphere the action of UV and ionizing radiations damage potential chemical biosignatures at or in the vicinity of the surface. Their long-term effects are expected to decrease with depth and accessing to the Martian shallow subsurface, where samples of astrobiological interest can be better preserved, is a crucial step for searching for possible signs of life (past and present). In order to assess the presence of organic molecules and potential biomarkers in the subsurface, the ESA/Roscosmos Rosalind Franklin Rover is equipped with a Drill able to collect samples down to a depth of 2 m for the first time on Mars. Here we propose to use the Drill telemetry in synergy with data from Rover instruments dedicated to subsurface investigations (ADRON, CLUPI, Ma\_MISS and WISDOM) to better characterize the subsurface stratification, compositional variations and connection with surface morphology for a thorough understanding of the geological history of Oxia and a proper selection of the drilling site