*Allison Craddock¹, John Labrecque², John Rundle³, Basara Miyahara⁴ (1.NASA Jet Propulsion Laboratory, California Institute of Technology, USA, 2.University of Texas, Center for Space Research, USA, 3.University of California, Departments of Physics and Earth & Planetary Science, USA, 4.Geospatial Information Authority of Japan, Japan)