Department of Earth and Planetary Sciences and School of Engineering and Applied Sciences, Harvard University, 288 Pierce Hall, 29 Oxford St, Cambridge, MA 02138, United States
Seismological Laboratory, California Institute of Technology, 1200 E California Blvd, Mail Code 252-21, Pasadena, CA 91125, United States
Department of Earth and Planetary Sciences and School of Engineering and Applied Sciences, Harvard University, 224 Pierce Hall, 29 Oxford St, Cambridge, MA 02138, United States