Erwan Mazarico¹, Luciano Iess², Doris Breuer³, Fabrizio De Marchi⁴, Alex S Konopliv⁵, Scott Hensley⁶ and Suzanne E Smrekar⁵, (1)NASA Goddard Space Flight Center, Greenbelt, MD, United States, (2)Univ. La Sapienza, Roma, Italy, (3)German Aerospace Center DLR Berlin, Berlin, Germany, (4)Sapienza University of Rome, Rome, Italy, (5)NASA Jet Propulsion Laboratory, Pasadena, CA, United States, (6)JPL-Radar Science & Engrg, Pasadena, CA, United States