Physics and Astronomy Department San Francisco State University, 1600 Holloway, San Francisco, CA 94132 United States
Physics and Astronomy Department San Francisco State University, 1600 Holloway, San Francisco, CA 94132 United States
Geosciences Department San Francisco State University, 1600 Holloway, San Francisco, CA 94132 United States ; Romberg Tiburon Center for Environmental Studies, 3152 Paradise Drive, Tiburon, CA 94920 United States
Physics and Astronomy Department San Francisco State University, 1600 Holloway, San Francisco, CA 94132 United States ; Romberg Tiburon Center for Environmental Studies, 3152 Paradise Drive, Tiburon, CA 94920 United States