1. Minerals, Energy and Geophysics (GMEG) Science Center, U.S. Geological Survey, Geology, Reston, VA 20192, USA
2. NASA Ames Research Center Intelligent Robotics Group, Moffett Field, CA 94035, USA
3. Earth Resources Observation and Science (EROS) Center, U.S. Geological Survey, Sioux Falls, SD 57198, USA
4. Pacific Coastal and Marine Science Center (PCMSC), U.S. Geological Survey, Santa Cruz, CA 95060, USA