1. Helmholtz Centre Potsdam GFZ German Research Centre for Geosciences Potsdam Germany
2. Department of Earth Sciences Memphis Center for Earthquake Research and Information University of Memphis Memphis TN USA
3. Free University Berlin Institute of Geological Sciences Berlin Germany
4. Department of Earth Sciences and Statewide California Earthquake Center University of Southern California Los Angeles CA USA
5. Institute of Earth and Environmental Sciences University of Potsdam Potsdam Germany