1. Department of Earth and Planetary Sciences Yale University New Haven CT USA
2. Department of Geosciences Williams College Williamstown MA USA
3. Department of Geology and Geological Engineering Colorado School of Mines Golden CO USA
4. Department of Earth Science University of Bergen Bergen Norway
5. Now at Earthquake Science Center U.S. Geological Survey Menlo Park CA USA
6. Now at Department of Geosciences Princeton University Princeton NJ USA
7. Now at GFZ German Research Center for Geosciences Potsdam Germany