Kristin M Schild¹, David Sutherland¹, Fiammetta Straneo², Dan Duncan³, Michael Kazhdan⁴ and Peter J Gadomski⁵, (1)University of Oregon, Eugene, OR, United States, (2)Scripps Institution of Oceanography, La Jolla, CA, United States, (3)University of Texas, Institute for Geophysics, Austin, TX, United States, (4)Johns Hopkins University, Balitmore, United States, (5)Organization Not Listed, Boulder, United States