1. Institute of Geological Sciences University of Bern Bern Switzerland
2. Department of Earth Sciences ETH Zurich Zürich Switzerland
3. Institute of Earth and Environmental Sciences University of Freiburg Freiburg Germany
4. Geoscience Center University of Göttingen Göttingen Germany
5. Institute of Earth Sciences University of Lausanne Lausanne Switzerland
6. Swiss Seismological Service ETH Zurich Zürich Switzerland