Kurama Okubo¹, Harsha S. Bhat², Esteban Rougier³ and Marine Denolle¹, (1)Harvard University, Earth and Planetary Sciences, Cambridge, MA, United States, (2)Ecole Normale Supérieure, Département de Géosciences, Paris, France, (3)Los Alamos National Laboratory, EES-17, Los Alamos, NM, United States