1. Helmholtz Centre Potsdam; GFZ German Research Centre for Geosciences; Potsdam Germany
2. Now at Department of Earth and Environmental Sciences; University of Iowa; Iowa City IA USA
3. Pacific Geoscience Centre; Geological Survey of Canada; Sidney British Columbia Canada
4. School of Earth and Ocean Sciences; University of Victoria; Victoria British Columbia Canada
5. State Key Laboratory of Earthquake Dynamics, Institute of Geology; China Earthquake Administration; Beijing China