1. Department of Geosciences, University of South Florida, Tampa, Florida, USA.
2. Geology Department, Occidental College, Los Angeles, California, USA.
3. Department of Physics, Boise State University, Boise, Idaho, USA.
4. NASA Jet Propulsion Laboratory, California Institute of Technology, Pasadena, California, USA.
5. Scripps Institution of Oceanography Department, University of California at San Diego, La Jolla, California, USA.