1. Department of Earth Science University of California Santa Barbara CA USA
2. Earth Research Institute University of California Santa Barbara CA USA
3. Department of Geosciences The Pennsylvania State University University Park PA USA
4. Department of Earth Sciences University of Oxford Oxford UK
5. Department of Earth and Environmental Studies Columbia University Lamont Doherty Earth Observatory Palisades NY USA
6. Hokkaido Research Center of Geology Ebetsu Japan
7. Environmental Science Research Laboratory Central Research Institute of Electric Power Industry Abiko, Chiba Japan
8. Department of Earth, Atmospheric and Planetary Science Massachusetts Institute of Technology Cambridge MA USA