1. Department of Geology University of Illinois at Urbana Champaign Urbana IL USA
2. Department of Earth and Atmospheric Sciences Cornell University Ithaca NY USA
3. Université de Paris Institut de Physique du Globe de Paris CNRS Paris France
4. Department of Environmental Science University of Arizona Tuscon AZ USA
5. Hakai Institute Tula Foundation Vancouver BC Canada
6. School of Resource and Environmental Management Simon Fraser University Burnaby BC Canada
7. School of Ocean and Earth Science National Oceanography Centre Southampton University of Southampton Waterfront Campus Southampton UK