1. Department of Earth Sciences University of Southern California Los Angeles California USA
2. School of the Earth, Ocean and Environment University of South Carolina Columbia South Carolina USA
3. Department of Earth System Science University of California Irvine California USA
4. Facultad de Ciencias Marinas Universidad Autonoma de Baja California Ensenada Mexico
5. Institute of Biogeochemistry and Pollutant Dynamics Eidgenössische Technische Hochschule Zurich Switzerland