MARSIS MARSIS MARSIS (Mars Advanced Radar for Subsurface and Ionosphere Sounding) is a low frequency, pulse-limited radar sounder and altimeter developed by the University of Rome La Sapienza and Alenia Spazio (today Thales Alenia Space Italy). The Italian MARSIS instrument is operational on the European Space Agency, "Mars Express" orbiter mission. The MARSIS Principal Investigator is Giovanni Picardi from the University of Rome "La Sapienza", Italy. It features ground-penetrating radar capabilities, which uses synthetic aperture techniques and a secondary receiving antenna to isolate subsurface reflections. MARSIS identified buried basins on Mars. MARSIS was funded by ASI (Italy) and NASA (USA). On
European Economic Association university level and research institutions in Europe " It publishes the "Journal of the European Economic Association". In August of each year the Association, in collaboration with the Econometric Society organises a congress in a European city. The congress attracts around 1500 participants. European Economic Association The European Economic Association (EEA) is a professional academic body which links European economists. It was founded in the mid-1980s. Its first annual congress was in 1986 in Vienna and its first president was Jacques Drèze. The current president is Eliana La Ferrara. The Association currently has around 3000 members. Its objectives are: ".