1. GEOMAR – Helmholtz‐Centre for Ocean Research Kiel Germany
2. National Oceanography Centre Southampton UK
3. Geological Survey of Norway (NGU) Trondheim Norway
4. Department of Earth Sciences Memorial University of Newfoundland St. John's Newfoundland and Labrador Canada
5. Now at the Department of Earth and Environmental Sciences University of Ottawa Ottawa Ontario Canada
6. Ocean and Earth Science, National Oceanography Centre Southampton University of Southampton Southampton UK