1. 1U.S. Geological Survey, Yellowstone Volcano Observatory, Denver, Colorado 80225-0046, USA
2. 2U.S. Geological Survey, Rocky Mountain Science Center, Bozeman, Montana 59715, USA
3. 3New Mexico Institute of Mining and Technology, New Mexico Bureau of Geology and Mineral Resources, Socorro, New Mexico 87801, USA
4. 4Montana State University, Department of Earth Sciences, Bozeman, Montana 59717, USA
5. 5University of Nebraska-Lincoln, Department of Earth and Atmospheric Sciences, Lincoln, Nebraska 68588-0340 USA
6. 6Lund University, Department of Geology, Lund, 22362, Sweden
7. 7University of Illinois at Urbana-Champaign, Department of Geology, Urbana, Illinois 61801, USA
8. 8University of Illinois at Urbana-Champaign, Departments of Geography and GIS, Mechanical Science and Engineering and Ven Te Chow Hydrosystems Laboratory, Urbana, Illinois 61801, USA
9. 9U.S. Geological Survey, Geology, Geophysics, and Geochemistry Science Center, Denver, Colorado 80225-0046, USA
10. 10The Global Foundation for Ocean Exploration, Mystic, Connecticut 06355, USA
11. 11Department of Earth Sciences, University of New Hampshire, Durham, New Hampshire 03824, USA