Location: Room Mars, La Cité des Congrès, Nantes, France Time/date: Wed, 30 Sep, 14:00–15:30 MarsSI (MARS System of information) is a web Geographic Information System application which allows managing and processing of Martian orbital data. From this application, the users are able to easily and rapidly select observations, to process raw data via proposed automatic pipelines and to get back final products which can be visualized under Geographic Information Systems like ARCGIS and QGIS. Also, MarsSI proposes automatic stereo-restitution pipelines to produce Digital Terrain Models (DTMs) from CTX and HIRISE stereo pairs. This application is part of the ERC project e-Mars founding from the European Union’s Seventh Framework Program (FP7/2007-2013) (ERC Grant Agreement No. 280168). 1 1/2-hour workshop will be held at 2 pm Wednesday, September 30 during European Planetary Science Congress 2015 (Nantes, France) for community members using martian orbital data. In the workshop, we will present and describe the basic functions of MarsSI (data processing, stereo-restitution...). MarsSI website can be found at: https://emars.univ-lyon1.fr The contact is Cathy Quantin-Nataf ([email protected]) -To get an account, please send an email to [email protected] -Tutorials (e.g., available observations, proposed processing pipelines) can be found at: https://www.youtube.com/channel/UCAn2ZPUPJ6g-ZaJkiOhue7A