1. Helmholtz Centre Potsdam GFZ German Research Centre for Geosciences, Seismic Hazard and Risk Dynamics, Potsdam, Germany
2. Institute of Geosciences, University of Potsdam, Potsdam, Germany
3. Institute of Mathematics, University of Potsdam, Potsdam, Germany
4. Faculty of Electrical Engineering and Computer Science, Technische Universität, Berlin, Germany