Tess S Weathers, Chabot Community College, Hayward, CA, United States, Andrew T Fisher, University of California Santa Cruz, Earth and Planetary Sciences, Santa Cruz, CA, United States, Phil H Stauffer, Los Alamos National Laboratory, Earth and Environmental Sciences Division, Los Alamos, NM, United States and Carl W Gable, Los Alamos National Laboratory, Los Alamos, NM, United States