1. Department of Earth and Planetary Sciences UC Santa Cruz Santa Cruz CA USA
2. U.S. Geological Survey, Geology, Minerals, Energy and Geophysics Science Center Moffett Field CA USA
3. U.S. Geological Survey Pacific Coastal and Marine Science Center Santa Cruz CA USA
4. Joint Institute for Regional Earth System Science and Engineering University of California Los Angeles CA USA
5. Jet Propulsion Laboratory California Institute of Technology Pasadena CA USA