1. Bullard Laboratories, Department of Earth Sciences, University of Cambridge, Madingley Road, Cambridge CB3 0EZ, United Kingdom, Sylvain_michel@live.fr
2. Also at Department of Geology and Planetary Sciences, California Institute of Technology, 1200 E. California Boulevard, Pasadena, California 91125.
3. Department of Geological and Planetary Science, California Institute of Technology, 1200 E. California Boulevard, Pasadena, California 91125, avouac@gps.caltech.edu
4. Laboratoire de Géologie, CNRS UMR 8538, Département de Géosciences, PSL Research University, École Normale Supérieure, 24 rue Lhomond, 75005 Paris, France, romain.jolivet@ens.fr
5. State Key Laboratory of Earthquake Dynamics, Institute of Geology, China Earthquake Administration, Beijing 100029, China, wanglf@ies.ac.cn