Department of Earth, Atmospheric, and Planetary Sciences, Massachusetts Institute of Technology, 77 Massachusetts Ave., Cambridge, MA 02139 United States
Institute of Geology and Geophysics, Chinese Academy of Sciences, Dewai Qijiahuozi Beituchengxilu 19, Beijing, 100029 China
Department of Earth, Atmospheric, and Planetary Sciences, Massachusetts Institute of Technology, 77 Massachusetts Ave., Cambridge, MA 02139 United States
Earth and Environmental Sciences, Lehigh University, 31 Williams Drive, Bethlehem, PA 18015 United States
Department of Physics, University of Colorado, Campus Box 390, Boulder, CO 80309 United States