Matthew R Diamond, University of California Berkeley, Berkeley, CA, United States, Dmitry Popov, Carnegie Inst. of Washington, Argonne, IL, United States, Changyong Park, Geophysical Laboratory, Washington Dc, DC, United States, Guoyin Shen, Carnegie Instituion of Washing, Argonne, IL, United States, Steven D Jacobsen, Northwestern University, Department of Earth and Planetary Sciences, Evanston, IL, United States and Raymond Jeanloz, University of California Berkeley, Earth and Planetary Science, Berkeley, CA, United States